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Tesoro VAQUERO Metal Detector OPERATOR INSTRUCTION MANUAL

 

TESORO VAQUERO Metal Detector OPERATOR INSTRUCTION MANUAL
 

CONGRATULATIONS!

Your new Tesoro Vaquero metal detector is part of a new series of detectors designed to provide you with many happy hours of enjoyment in the most rewarding hobby I can think of—treasure hunting. Ahead of you lie fascinating and exciting experiences as you step into the past—uncovering artifacts lost by past generations, or as you take pleasure in the great outdoors with family and friends searching for precious metals. I wish we could share these experiences with you, and all of us at Tesoro wish you the best of success.

Your Tesoro detector is capable of meeting your needs in a wide range of treasure hunting situations. As with any other metal detector, familiarity with this instrument is probably the limiting factor in determining how successful you can be. I recommend that you read this manual and fully understand how to operate this detector before attempting to use it in the field. As you become more familiar with your detector through practice, your rate of success will increase dramatically.

The Vaquero is a precision electronic instrument that will last for years if properly cared for. Treat it right and it won’t let you down.

 

 

 


GETTING STARTED – UNPACKING THE BOX

Your Vaquero was shipped with these parts:

1 Upper Pole Assembly

Fully assembled, including upper pole stem with handle grip, padded arm bracket, and control housing.

1 Middle Pole Assembly With Pole Lock

1 ABS Lower Pole Assembly

Fully assembled, complete with two friction washers, mounting screw, and thumb nut.

1 9 x 8 Monolithic Searchcoil With 3’ Cable and Scuff Cover

1 9 Volt Alkaline Battery

1 Operator Instruction Manual

1 Warranty Card

If any of these items are missing, immediately contact the Tesoro Authorized Dealer where you purchased your detector.

Assembly of the Vaquero is simple and requires no special tools. Just install the battery, mount the searchcoil on the lower pole assembly, connect the pole assemblies together, wrap the excess cable around the pole and, plug the cable into the control housing. Finally, adjust the pole length and searchcoil angle and you’re ready!


INSTALLING THE BATTERY

Your Vaquero is equipped with a battery test switch so that you can always be sure you are getting top performance. (See QUICKSTART for operation.) The battery should be checked after the detector has been on for about 10 minutes and then periodically when used for long durations.

To install or replace the battery, first make sure the SENSITIVITY control is set to POWER OFF—turned completely counterclockwise past the “click.” Remove the battery door from the back of the control housing. Do this by pressing your thumb firmly on the louvered square—at the bottom of the battery door—and sliding the battery door upward in the direction of the arrow.

Check the polarity on the battery and on the diagram inside the battery compartment. Make sure that they match and simply drop a fresh 9 volt alkaline battery into the compartment. Note: If the battery is not installed properly, damage may occur to your detector.

Replace the battery door by sliding it into place making sure the upper mount slots are in line and the lock tongue is snapped in place.


ASSEMBLING YOUR DETECTOR
    1. On the lower pole assembly, remove the mounting screw, and thumb nut from the pole tip.
    2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and washers with those of the mounting ears.
      Note: The pole tip should fit very snugly into the mounting ears.

 

    1. Insert the mounting screw through the holes in the mounting ears and pole tip—entering from the side opposite the cable connection.
    2. Install the thumb nut on the mounting screw and tighten by hand.
      Note: Do not overtighten the thumb nut. It should be snug but not too difficult to loosen up.
    3. On the middle pole assembly, depress the two spring buttons and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes, locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together.

 

  1. Slide the lower pole into the middle pole until spring buttons click into the first set of adjustment holes. Turn pole lock to tighten the assemblies into place.
  2. Wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment.
    Note: Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.
  3. Plug the male cable end into the female connector on the control housing and tighten the cable thumb nut. You are finished!
    Note: You will want to adjust the pole length and the searchcoil angle to your preference.


ADJUSTING THE POLE & SEARCHCOIL

The pole length should be adjusted so that the detector does not become uncomfortable or tiring after long periods of use. The detector grip should rest in your hand with your arm relaxed, your elbow straight but not locked, with the pole extending out in front of you at the approximate angle shown in the photo.

You should be able to swing the detector back and forth in front of you—using relaxed shoulder movement—while keeping the searchcoil as close to the ground as possible. This swinging movement is often called a “sweep.”

The searchcoil should not touch the ground during your sweep. The pole length should be adjusted to allow this without having to lift the detector with your elbow or shoulder. The searchcoil should rest about one inch above the ground while you are standing erect. The angle of the searchcoil should allow the bottom to be parallel to the ground.

The pole length is adjusted by loosening the pole lock, then depressing the spring buttons and extending or shortening the pole until the spring buttons click into the set of holes that give you the most comfortable pole length.

To adjust the searchcoil angle, simply loosen the searchcoil thumb nut slightly and move the searchcoil into the desired position. Tighten the searchcoil thumb nut by hand so that the searchcoil will hold in place.


QUICKSTART – SELF-GUIDED TUTORIAL

The Quickstart is designed to teach you how to use your new Vaquero. It provides a quick and easy means of learning your detector and the concepts behind all of the functions.

You will need the following items:

  1. Your fully assembled Vaquero.
  2. An iron target (a small nail or screw will do), a nickel, a quarter, and a couple of different pulltabs.
  3. A nonmetal table top or counter.

Here’s what you will do:

  1. Perform Audio Battery Test.
  2. Adjust THRESHOLD.
  3. Adjust GROUND BALANCE for Air Test.
  4. Perform Air Test in ALL METAL Mode.
  5. Adjust SENSITIVITY.
  6. Perform Air Test in DISC Mode.
  7. Perform Air Test in PINPOINT Mode.
  8. Super Tune Your Vaquero.
  9. Adjust FREQ Switch.
Prepare for the Quickstart

Place your assembled Vaquero on the nonmetal surface. Make sure that there are no metal objects near the coil and remove any jewelry from your hands and wrists.

Start with the controls like this:

  1. THRESHOLD and SENSITIVITY knobs turned completely counterclockwise.
  2. DISCRIMINATE LEVEL knob turned completely counterclockwise and clicked into the ALL METAL Mode.
  3. GROUND BALANCE knob at the 12 o’clock position.
  4. FREQ switch in the center position.
Perform Audio Battery Test

Turn the SENSITIVITY knob from OFF to about 7 or 8. You will hear a series of quick beeps. If the battery is fully charged, you will hear 6 or 7 beeps. When you hear only 1 or 2 beeps, it will be time to replace your battery. This test is only performed when the detector is first turned on. If you would like to check the condition of your battery while hunting, turn your detector off and on again and listen to the beeps.

Adjust THRESHOLD

To adjust the threshold tone, turn the THRESHOLD knob clockwise until you hear a slight but steady tone. You will have to turn the knob to somewhere between the 10 o’clock and 3 o’clock position to get the best hum.

The purpose of the threshold tone is to give a reference to judge targets for pinpointing, to adjust the ground balance (for more information on ground balancing, see the “Adjust GROUND BALANCE for Air Test” section and the “Ground Balancing in the Field” section) and to super tune the Vaquero. (For more information on super tuning, see the “Super Tune Your Vaquero” section.)

In the field, some targets may be small enough or deep enough that they will not be able to generate an audio signal by themselves. By monitoring a threshold tone, you already have a slight audio tone so changes are easier to hear. However, if your threshold tone is set too soft or too loud, small changes in the signal will be hard to hear. Take some time and find a threshold level that is right for you.

Adjust GROUND BALANCE for Air Test

The ground balance function for your Vaquero is a form of discrimination that allows you to tune out the mineralization in the ground that may mask targets or decrease the detector’s depth and sensitivity. The GROUND BALANCE knob is on a 3 and ¾-turn potentiometer. While the knob will turn endlessly in either direction, when the knob is at the end of its range, a slight drag will be felt while turning.

The following procedure is for the air test only. For directions on ground balancing your Vaquero in the field, see the “Ground Balancing in the Field” section.

To set the GROUND BALANCE knob for the air test, turn the knob 5 turns counterclockwise and then turn the knob 2 turns clockwise. This will make sure the GROUND BALANCE knob is just slightly above the middle part of its range. No further turns will be needed for the air test.

Perform Air Test in ALL METAL Mode

Once you have set the correct threshold hum and adjusted the ground balance, you are ready to perform an Air Test in the ALL METAL Mode. Your Vaquero has a VCO-style ALL METAL Mode. You will find that as targets get closer to the coil, the threshold tone will get louder and higher in pitch.

Try waving your targets in front of the coil. Start from a distance of 10 to 12 inches away from the coil and slowly work your way closer to the coil. Then try starting from 6 inches away from the left or right of your coil and work your way to the center of the coil. Notice the changes of the audio signal. Your strongest signal will always be closest to the center of the coil. Additional information can also be learned by the signal strength and pitch. A smaller or deeper target will give a less noticeable change in the threshold than a larger or shallower target will give.

Your Vaquero is equipped with an automatic Threshold Retune circuit in the ALL METAL Mode. While searching in the ALL METAL Mode, the circuit is constantly adjusting the threshold to maintain the steadiest possible audio tone. The Threshold Retune circuit can also be used to help the pinpointing of targets. Hold any target over the coil somewhere between four and six inches away from the coil. You will get a strong audio target signal. After a few seconds, the audio signal will drop to the preset threshold level. When this happens, move the target one or two inches to either side of the center of the coil. You will notice that the audio signal will go silent or null and that the target will only beep directly over the center of the coil. When this technique is used in the field, it will simplify your ability to quickly pinpoint your target.

Take some time and try all of your targets at different depths to find out how your detector sounds.

Adjust SENSITIVITY

We are now ready to switch the detector into the DISCRIMINATE mode. Go to the DISCRIMINATE LEVEL knob and turn it slightly clockwise until it clicks. You will notice that the threshold hum will stop. The discriminate circuit uses a silent search mode, meaning that no sound will be heard until the coil goes over a target. The most common use of the detector is to hunt in the DISCRIMINATE MODE and push the PINPOINT button to pinpoint a target. This will give you that advantage of ignoring unwanted targets and not having to listen to the threshold hum until you are ready to pinpoint and dig a target.

The all metal circuit uses a single channel to detect various metals. The discriminate circuit uses two different channels, then amplifies and filters them. The detector will then compare the signals and determine whether or not to beep at the target. While there is a great advantage to ignoring unwanted targets, it can make the circuitry more susceptible to interference. A number of outside conditions such as power lines, highly mineralized soil, and wet salt sand can cause interference.

The SENSITIVITY knob is used to raise or lower the power to the operational amplifiers, which changes the gain. Gain is a measurement of how much a signal is amplified. The higher the gain the more depth and sensitivity to small objects a detector has. Unfortunately, any small interference that is amplified can cause the detector to become erratic. The SENSITIVITY control is used to find the best gain setting in any location without letting the detector become unstable.

Take some time to try waving targets in front of the coil with different sensitivity settings. Notice that the higher the sensitivity setting, the farther away from the coil that a target can be and still respond with an audio signal.

Perform Air Test in DISC Mode

As discussed before, the DISCRIMINATE Mode is used to filter unwanted targets from good targets. The principle behind this is pretty simple. The detector sends out a signal and then receives it back creating a small electronic field. As metal passes through the field that the detector generates, it causes a change in the received signal. The amount of change that each type of metal causes is fairly constant; therefore, we can tune our detectors to miss targets that we don’t want to find. The change is based on the type of conductivity that each target has. The general list of conductive targets is as follows: iron, foil, nickels, gold jewelry, pulltabs, screw tabs, pennies, and silver coins starting with dimes and working up to silver dollars. This list is only meant to be a guide. There is a point that some pulltabs, nickels, and gold jewelry overlap. Also, the depth of the target and its orientation in the ground can change the received signal. A coin that is flat to the coil will produce a better signal than a coin that is on edge. Take some time to try different combinations of depths and orientations of your targets and find out how your detector responds.

We are now ready to discriminate targets from each other. We will start with the DISCRIMINATE LEVEL at MIN. Please notice that the DISCRIMINATE LEVEL knob has words that correspond to the items that are discriminated out.

All four targets (the iron, nickel, pulltabs, and quarter) will respond with a good audio signal at the MIN setting. Next, we will turn the DISCRIMINATE LEVEL up to or just slightly past the IRON level. This should be high enough to knock out the iron target and still get a positive response on the nickel, pulltabs, and quarter. When you are done, turn the DISCRIMINATE LEVEL to around the 5¢ setting. This level is high enough to knock out the nickel. At this time, the iron target and the nickel should give no response, while most of the pulltabs and the quarter will give a solid response. Next, turn the DISCRIMINATE LEVEL knob just past the TAB marking. At this time, most or all of the pulltabs should not give any audio signal. Only the quarter should give a strong signal. Now, roll the DISCRIMINATE LEVEL all the way to MAX. Notice that the quarter is still responding. The discrimination will not go high enough to lose most of the silver coins.

This air test was designed to quickly show you how your discriminate mode works. Each machine may be a little different from all of the others, so you may want to take some time and try different targets to find responses of your machine. At a later date, you may want to build a test garden to test your detector in the field.

Perform Air Test in PINPOINT Mode

When you are hunting in the DISCRIMINATE Mode, the PINPOINT button will allow you to momentarily switch back into the ALL METAL Mode. The PINPOINT button is springloaded and must be pressed and held to shift into the ALL METAL Mode.

At this time, you should be in the Silent Search Discriminate Mode. Press the PINPOINT button and you will immediately hear the threshold audio tone. This indicates that you are now in the ALL METAL Mode. Hold the button in and check your targets. They will respond like in the ALL METAL air test.

Take some time to try different discriminate levels and then check them with the PINPOINT Mode. You will notice some distinctly different tones. Practice and experience will give you large amounts of information that will help you decide whether or not to dig a target in the field.

Super Tune Your Vaquero

The Vaquero can be set up to get even better depth and sensitivity while operating in the DISCRIMINATE Mode. Super tuning is accomplished by working in the DISCRIMINATE Mode and turning the THRESHOLD knob to the highest setting.

Super tuning your Vaquero will cause the threshold audio level to be set too high for accurate All Metal or Pinpointing operation.

To start, turn the DISCRIMINATE LEVEL knob to just above the IRON setting and turn the SENSITIVITY knob as high as it will go without causing the detector to chatter. Check a target or two and notice how far away you can get from the coil and still receive a repeatable audio signal. Now, turn up the THRESHOLD knob and recheck the targets. You should see an increase in the distance from the target to the coil. Push the PINPOINT button. Notice that the threshold tone is far too loud to accurately identify some of your targets.

When hunting with a super tuned Vaquero, you should ground balance the detector with the threshold tone set at the level of a low steady hum. After you have ground balanced, you can turn up the THRESHOLD knob to super tune your detector.

Take some time to try different targets and settings in an air test to see how well your detector will work in the ground.

Adjust FREQ Switch

Your Vaquero comes equipped with a frequency shift switch (FREQ1, FREQ2, and FREQ3). This switch is used to change the operating frequency of your detector. This ability will help you to work a larger number of areas. The most common use would be during a large hunt where another hunter has the same frequency machine as your detector. Two machines that are on the same frequency will start broadcasting to each other. This is called crosstalk. If you experience crosstalk in the middle of a hunt, just flip the FREQ switch to another setting. This is very easily done and can be done in the middle of a sweep. Changing the frequency can also help in some urban areas where there may be a high concentration of radio or cell phone traffic. If your detector is acting erratically after adjusting the SENSITIVITY and GROUND BALANCE, try shifting the FREQ switch and resetting the SENSITIVITY and GROUND BALANCE.

Changing the operating frequency will not change the audio frequency of the signal in the speaker. The audio frequency is controlled by a microprocessor and will not shift.

Conclusion

Congratulations, you have just finished the Quickstart for your new Vaquero detector and in the process have learned quite a lot about your detector. But experience is the best teacher. I would recommend that you get out and practice with your detector as much as possible. Any time spent using your detector will give you valuable experience.

 


OPERATING TECHNIQUES
Ground Balancing in the Field

Ground balancing is not a difficult procedure, but it is critical if you desire maximum depth and stability. It is especially important if you plan to find deep relics or prospect for gold nuggets.

No matter how or where you will be hunting, or whether you will be hunting in the All Metal or Discriminate Mode, you must tune the ground balance for the area that you will be hunting. If you fail to ground balance for every site, you will not be working at the peak of your detector’s performance and may lose both depth and sensitivity.

To ground balance in the field, we will start by assuming your detector is turned off. This will be the normal condition of your detector when you start hunting. Ground balancing can be done at any time while you are using the detector. It is not necessary to turn the machine off each time that you ground balance.

Start with the controls in the following position:

  1. SENSITIVITY on OFF.
  2. DISCRIMINATE LEVEL clicked into the ALL METAL.
  3. All other controls will be set during the ground balancing procedure or are not applicable at this time.

Turn the detector on by rolling the SENSITIVITY knob clockwise to about 9 or 10 on the dial. You will hear a quick double beep to let you know the detector is operating. Next, adjust the THRESHOLD knob until a slight, steady hum is heard. The machine is now ready to be ground balanced. Next, find an area that has no metal targets in the ground, as this may give false readings while in the ground balance procedure.

Raise your searchcoil about 6 to 8 inches off the ground. This is high enough so that the detector will no longer read the minerals in the ground. While listening to the threshold sound, lower the searchcoil to about 1 inch off the ground. As the coil is dropped, the detector will start to read the ground minerals and will give you one of three sounds: 1) The threshold tone will get louder and raise in pitch. This is a positive response; 2) The threshold tone will go quiet, followed by a quick tone. This is called a negative response; 3) There will be no change in the threshold tone as the coil is dropped. This is the balanced response. When you get a balanced response, the detector is telling you that it is ready to hunt.

The positive and negative responses are easy to adjust. If you get a positive response, turn the GROUND BALANCE knob towards the minus sign on the face or in a counterclockwise direction. Getting a negative response means turning the GROUND BALANCE knob towards the plus sign on the faceplate or in a clockwise direction.

Here is an example of balancing: After setting up the detector, you raise the coil and then push it to the ground. As the coil drops, the threshold hum gets louder. You then turn the GROUND BALANCE knob counterclockwise towards the minus sign. You pick up the coil and push down again. This time you get a slight negative response. Turn the GROUND BALANCE knob a little bit towards the positive or in a clockwise direction. When raising and lowering the coil, the threshold makes no change as the coil is dropped. At this point the detector is balanced for the area and is ready to hunt.

Ground balancing is a learned skill, one that you should practice often. AVOID THIS! Never tilt your searchcoil when “pumping” your detector to ground balance. It is easy to practice almost anywhere—your front or backyard, a local park or a fair-sized flower garden. When you are practicing, make sure that there are no pieces of metal underneath your coil that may cause a target sound.

Please remember that the coil must be lifted straight off of the ground. Swinging the coil in an arc, like a pendulum, will cause false readings and will result in an improper ground balance.

Handling Your Detector

The detector should be held in a position that is comfortable for you as shown in the “Adjusting The Pole & Searchcoil” section in GETTING STARTED. Swing the detector from side to side in about a three foot arc, overlapping succeeding strokes well. This motion is called a “sweep.” The Vaquero is designed to get maximum depth without the frantic pace required of earlier motion detectors, so go at a pace that is comfortable for you. In fact, trying to hunt too fast may even cause a loss of depth in heavily mineralized locations.

Regardless of which mode you are using, try to keep your searchcoil height constant and close to the ground. Most people tend to raise the coil at the end of a sweep—much like a pendulum—especially if they are in a hurry. Try to avoid this as any increase in height from the ground will cause a corresponding loss of depth.

In areas with well-kept lawns, the easiest way to maintain a constant searchcoil height is to allow the coil to rest on the grass as you sweep from side to side. In rough and rocky areas, it is best not to “scrub” the coil on the ground, as the rocks will act like abrasives and wear away the coil bottom (a scuff cover will protect against this). Sweep the coil as close to the ground as possible without touching. Hitting the ground or rocks may cause a false signal, much like a desired target would. Sweeping the coil too high above the ground results in a loss of depth.

Pinpointing a Target

When pinpointing a target, the ALL METAL Mode can offer advantages over the DISCRIMINATE Mode, such as no false signals and no need to move the searchcoil to get a target response.

A good method for pinpointing in ALL METAL Mode is “X-ing” the target with the searchcoil. Remember that the target’s response sound is always greatest when the target is directly under the center of the searchcoil. To “X” a target, sweep the searchcoil over the target from side to side and then from front to back until you can identify the center of the X—the spot on the ground where the target response sound is the greatest.

Pinpointing a target in the DISCRIMINATE Mode is probably best done by “X-ing” as well. Remember that the detector will beep just as the target passes under the center of the searchcoil. Slowing the sweep speed down will help you pick out the center of the X because the target response is reduced at very slow speeds making it easier to correlate the sound with the coil center.

Another easy method is to sweep the coil from side to side across the target in very short sweeps as you slowly move forward and backward across the target. Slow down the sweep rate and shorten the sweeps until you just barely get a response at one spot. The target will be directly below the coil center at this response time.

Another method of pinpointing in the DISCRIMINATE Mode is to quickly change to the ALL METAL Mode to check the target response. Remember that all metal mode is not susceptible to the false signals of the DISCRIMINATE Mode and can sometimes give a clearer and more consistent response to difficult targets such as a dime buried next to a pulltab. By switching back and forth between modes and comparing the target response sound in all metal to the target response sound in discriminate, you can often better identify the likely location of the target.

Finally, raising the searchcoil during pinpointing can also help by narrowing the response to the target. Practice pinpointing often, and you will soon become more accurate and faster.

Planting a Test Garden

To better learn how your detector will perform in the field, it would be helpful to bury some coins and trash metal junk items in an area that you know is clear of other metal objects, and then try the Vaquero in the ALL METAL & DISCRIMINATE Modes. Check the area in ALL METAL Mode to be sure it’s clear of trash. Then bury the targets at least 1 foot apart and from 2 to 4 inches deep to start. Make a map of the area to be sure you know what each target is and how deep it is. Practice on these targets to familiarize yourself with your detector’s target response. This will also help you learn the proper sweep speed for best operation. This type of practice area is often called a “test garden” or “test bed” and is one of the best tools to help you develop your metal detecting skills.

CARE AND USE
Basic Care

The Vaquero is a sturdy instrument, but it is not designed to withstand abuse. In caring for your Vaquero there are several important “DO NOTs” to remember. DO NOT use it to pry rocks loose or to beat bushes out of the way. DO NOT drop the machine into water. DO NOT use it unprotected in the rain. DO NOT leave it exposed at night where dew could form on it. DO NOT store it in places that could get extremely hot (next to a woodstove, in an attic). DO NOT leave it in the trunk of a car or in the back of a hatchback-style car where high temperatures could build up. DO NOT store it with the battery installed as batteries may leak. DO NOT spray lubricants such as WD-40, or any type of cleaners, solvents, sealants or other chemicals into or onto the electronic parts, switches or controls. And finally, DO NOT attempt to modify or repair the detector’s electronics as this will void your detector’s warranty.

THE WARRANTY DOES NOT COVER DAMAGE RESULTING FROM AN ACCIDENT, NEGLECT OR ABUSE.

Protecting Your Investment

Often detectorists are disappointed when their new detector slowly becomes less and less responsive and seems to have lost some of its original peak performance. You can help avoid this from happening to your detector by following these basic care and protection guidelines:

  • Operate your detector exactly as recommended in this Operator Instruction Manual.
  • Use only high-quality alkaline batteries of the correct voltage. Never substitute a different voltage. When using a Ni-Cad battery, always use a separate convertible pack with the proper voltage output for the detector’s design.
  • Remove the battery from the detector after each use. This will prevent damage to the detector if the battery leaks.
  • The searchcoil cable is hard-wired to the searchcoil and protected by a strain relief. Inspect the strain relief frequently to make sure it is firmly attached and intact.
  • Keep cables properly wound around the pole stems and protect them during use. Floppy, pinched, or cables that become snagged during use may short, causing erratic noises or unnecessary replacement of the searchcoil.
  • Sweep the searchcoil carefully, especially when using around rocks and building foundations. Avoid hitting the searchcoil against hard, solid objects and surfaces.
  • Keep your searchcoil slightly off of the ground during the sweep, especially when using in gravel or hard, rocky dirt.
  • Always use a properly designed protective scuff cover on the searchcoil. (See “Optional Accessories” in the next section.)
  • Remove and clean out scuff covers periodically to avoid buildup of mineralized dirt particles which will affect performance.
  • The searchcoil is waterproof and can be submerged in either fresh or salt water. After the searchcoil is used in salt water, rinse it and the lower stem assembly well with fresh water to prevent corrosion of the metal parts.
  • The searchcoil is waterproof but the electronics are not, so always prevent any moisture or water from entering the control housing and never allow the cable connectors to become submerged in water.
  • If working in or near water, or if there is a possibility of rain, use a protective weather resistant pouch or plastic bag to cover the control housing. Make sure it can “breathe” in order to ensure against condensation buildup inside.
  • After each use, clean the detector with a soft cloth to remove dust, moisture, or other contaminants.
  • When transporting the detector in a car during hot weather, store it on the floor of the passenger compartment if possible. Using a carry bag gives additional protection. In any case, never allow the detector to roll around unprotected in the trunk or back of a pickup truck.
  • Protect your detector from dust, moisture, and extreme temperatures during storage.
  • When shipping, use the original factory carton or similar heavy-duty container and provide a minimum one inch of padding around all parts.
  • Treat your detector as you would any sensitive electronic instrument. Though ruggedly constructed and designed to withstand the demands of normal treasure hunting, proper care is essential.

 


OPTIONAL ACCESSORIES

Tesoro metal detectors and genuine Tesoro accessories are sold only through independent Tesoro Authorized Dealers, who are almost always metal detectorists themselves. They can answer your questions about your Tesoro detector, what accessories may be helpful and about metal detecting in general.

See your Tesoro Authorized Dealer for more information and prices on optional accessories.

Searchcoils

The 9 x 8 monolithic searchcoil provided with the Vaquero is designed for best all-around performance. Optional searchcoils may add to your detector’s performance.

Smaller searchcoils give better “target separation”—that is, more distinct target response for metal objects buried closely together—which is very useful when hunting trashy sites. Very small searchcoils can deliver the best response and depth to small targets such as fine gold chains with some sacrifice in depth on larger objects. Larger searchcoils give a wider sweep, covering more ground, and provide greater depth especially on larger objects; however, they may not detect some very small objects such as half dimes and will have difficulty in very trashy areas.

Wide scan searchcoils ignore ground mineralization better than concentric searchcoils and may offer improved performance in extreme ground conditions.

Selecting the right optional searchcoil depends on factors such as what you are searching for and search site conditions. No one searchcoil is better than all the rest. Several optional interchangeable searchcoils are available for the Vaquero. They are all easy to mount and require no special tools. See the coils section for a list of these searchcoils with the Tesoro part # and description.

Optional scuff covers are also available for any Tesoro searchcoil.

Headphones

Most metal detectorists prefer to use headphones instead of the detector’s built-in speaker. Headphones help block out background noise (such as wind) and make it easier to hear faint signals. Headphones with a builtin volume control will allow you to adjust the sound volume to your preference.

 


SPECIFICATIONS
Operating Frequency 14.3 kHz, 14.5 kHz, 14.7 kHz
Searchcoil Type Monolithic (Carbon Fiber)
Searchcoil Size 9 x 8
Searchcoil Family Delta
Cable Length Approx. 3’
Audio Frequency Approx. 293 Hz or VCO
Audio Output 1½” speaker and headphone jack
Headphone Compatibility ¼” stereo plug
Weight (may vary slightly) 2.2 lbs.
Battery Requirement One 9 volt DC (alkaline)
Battery Life (typical) 10 to 20 hours
Optimum Temperature Range 30° to 100° F
Optimum Humidity 0 to 75% R.H.
Operating Modes Threshold-based All Metal
Silent Search Discriminate
Pinpoint Mode All Metal Fast Auto-Tune

 


Metal Detectorist’s Code of Ethics
  1. Always check federal, state, county and local laws before searching. It is your responsibility to “know the law.”
  2. Abide by all laws, ordinances or regulations that may govern your search and the area you will be in.
  3. Never trespass. Always obtain permission prior to entering private property, mineral claims, or underwater salvage leases.
  4. Do not damage, deface, destroy, or vandalize any property, including ghost towns and deserted structures, and never tamper with any equipment at the site.
  5. Never litter. Always pack out what you take in and remove all trash dug in your search.
  6. Fill all holes, regardless how remote the location. Never dig in a way that will damage, be damaging to, or kill any vegetation.
  7. Do not build fires, camp at or park in non-designated or restricted areas.
  8. Leave all gates and other accesses to land as found.
  9. Never contaminate wells, creeks, or any other water supplies.
  10. Be courteous, considerate, and thoughtful at all times.
  11. Report the discovery of any items of historic significance to the local historical society or proper authorities.
  12. Uphold all finders, search and salvage agreements.
  13. Promote responsible historical research and artifact recovery and the sharing of knowledge with others.

WARRANTY SERVICE

Your Tesoro metal detector is covered by a Limited Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

LIMITED LIFETIME WARRANTY

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.

TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party.

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001 Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.

Tesoro Outlaw metal detector Instruction manual

Congratulations on the purchase of your Tesoro Outlaw Metal Detector.

 

You’ve taken the first step to be successful in treasure hunting, purchasing a high quality metal detector.

 

The second step is to learn to use your metal detector properly. Please take the time to read and understand the manual. It will walk you through assembly, the controls, an air test, and field use.

 

The third step is to hunt where treasure may be found. Your local dealer may provide insight, as well as treasure hunting magazines and books. Your research about locations and history will be as important as your choice of detectors.

 

The final step is to be persistent. There is no substitute for time in the field. Your success should grow with your experience and confidence.

 

All of us at Tesoro wish you success and enjoyment in your treasure hunting experience.

 

Vince Gifford

 


 

GETTING STARTED – UNPACKING THE BOX

Your Outlaw was shipped with these parts:

 1 Upper Pole Assembly

        – Fully assembled, including upper pole stem with handle grip, padded arm bracket and control housing.

 1 Middle Pole Assembly With Pole Lock

3 ABS Lower Pole Assembly

        – Fully assembled nylon pole, complete with two friction washers, wingbolt, and wing nut.

1 5.75” Round Concentric Searchcoil with 3.5’ Cable

1 8” Round, Concentric Searchcoil with 3.5’ Cable
1 12×10” Wide Scan Searchcoil with 3.5’ Cable
1 9 volt Alkaline Battery
3 One Wrap Velcro Strips (to hold coil cables)
1 Operator Instruction Manual
1 Warranty Card Figure 1 – Out of the Box
GETTING STARTED

If any of these items are missing, immediately contact the Tesoro Authorized Dealer where you purchased your detector.

Assembly of the Outlaw is simple and requires no special tools. Just install the battery, mount the searchcoils on the lower pole assemblies, connect the three pole assemblies together, wrap the excess cable around the pole and plug the cable into the control housing. Finally, adjust the pole length and searchcoil angle and you’re ready!


INSTALLING THE BATTERY

To install or replace the battery, first make sure the Sensitivity (SENS) control is set to OFF – turned completely counterclockwise past the “click”. Remove the battery door from the back of the control housing. Do this by pressing your thumb firmly on the louvered square – at the bottom of the battery door- and sliding the battery door upward (in the direction of the arrow) while pushing.

Check the polarity on the battery and on the diagram inside the battery compartment. Make sure they match when you insert the fresh 9 volt alkaline battery into the compartment.

Replace the battery door by sliding it into place making sure the upper mount slots are in line and the lock tongue is snapped in place.

 


ATTACHING LOWER POLES TO THE COILS
1. On a lower pole assembly, remove the mounting screw and thumb nut from the black nylon pole.
Leave the friction washers in the recessed feature of the pole tip.


Figure 2 – Removing Mounting Screw and Thumb Nut

2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and friction washers with those of the mounting ears.

Note: The pole tip should fit very snugly into the mounting ears with friction washers in place.

 


Figure 3 – Pole Tip In Searchcoil Mounting Ears

3. Insert the mounting screw through the holes in the mounting ears and pole tip (entering from the side opposite the cable connection).
4. Install the thumb nut on the mounting screw and tighten by hand.

Note: Do not overtighten the thumb nut. It should be snug but not too difficult to loosen up.


Figure 4 – Mounting Coil to Lower Pole

5. Wrap the cable around the pole and use one-wrap Velcro strip to hold cable per Figure 5. This will prevent the cable from flopping while not in use.


Figure 5 – Lower Poles Properly Attached to Coils


ASSEMBLING YOUR DETECTOR
1. Loosen pole lock on the upper pole assembly. Depress the two spring buttons on the middle pole assembly and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes, locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together.

Figure 6 – Attach Middle and Upper Pole Assemblies

2. Choose the coil you’re going to use. Remove one-wrap Velcro strip from lower pole assembly. Loosen the pole lock on the middle pole assembly. Depress the first two spring buttons on the lower pole assembly and slide lower pole into middle pole, depress the second two spring buttons and slide until spring buttons click into a set of adjustment holes. Select the adjustment holes that give you the proper overall pole length you require (only one set of spring buttons will be in adjustment holes depending on your length setting). Turn pole lock to tighten, locking the assembly into place.
3. Wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment. (See Figure 8)
Note: Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.
4. Plug the male cable end into the female connector on the control housing and tighten the cable thumb nut. You are finished!


Figure 7 – Connecting the Cable

Note: You will want to adjust the pole length and the searchcoil angle to your preference. See Field Use Section.


Figure 8 – Properly Assembled Outlaw


 

CONTROLS

 

The Outlaw Metal Detector has only six controls, all mounted on the front panel of the housing for fingertip adjustment. How these controls should be set for peak performance will depend on the type of metal you are searching for, search site conditions, mineral content of the soil and so forth. Use the information in this section and the Field Use Section “Tuning Your Detector” as a basis for setting the controls on your detector. Using your Outlaw Metal Detector in the field will allow you to learn the detector’s responses to various conditions and will guide you in fine tuning the detector’s operating controls.


Figure 9 – Outlaw Controls

 

 

GROUND BAL

This rotary control switch has one function:

  • Adjust the ground balance of the detector.

Turning the knob counterclockwise (-direction) will move the ground balance in a negative direction. Turning the knob clockwise (+direction) will move the ground balance in a positive direction.

MODE

This three-position switch has two functions:

  • Select the operating MODE (ALL METAL or Discriminate DISC)
  • Select the retune speed of the ALL METAL MODE (No Motion or AUTO Tune)
RETUNE

This push button has two functions:

  • Put the detector in the ALL METAL MODE
  • Retunes the threshold of the current signal

 

DISC

This rotary control has one function:

  • Set the level of discrimination

Turning the knob counterclockwise (MIN) will lower the amount of discrimination, lowering the amount of targets discriminated out. Turning the knob clockwise (MAX) will increase the amount of discrimination, increasing the type of targets discriminated out.

SENS

This rotary control switch has three functions:

  • Turns the detector ON and OFF
  • Activates the automatic Audio Battery Test
  • Adjusts the sensitivity level for the Discrimination (DISC) MODE

Turning the knob completely counterclockwise until it clicks turns the detector off. Turning the knob clockwise from the OFF position turns the detector on. It also activates the automatic battery test. The battery test is an audio tone. The volume and duration of the tone is related to the battery strength. When the battery test is no longer heard, the 9 V battery needs to be replaced. Continuing to turn the knob clockwise will increase the sensitivity in the Discrimination (DISC) MODE.

THRS

This rotary control has one function:

  • Set the level of the threshold

The threshold is the minimum noise at the speaker in the ALL METAL MODE. Turning the Threshold (THRS) clockwise will increase the threshold. Turning the Threshold (THRS) counterclockwise will decrease the threshold.


AIR TEST — SELF–GUIDED TUTORIAL

INTRODUCTION

The air test is designed to introduce the use of controls for the Outlaw Metal Detector. If you have never owned a metal detector before, follow each step carefully.
You will need:

  • Fully assembled Outlaw Metal Detector
  • Three newer coins: a penny (1984 or newer), a nickel and a quarter
  • A non-metal table or counter surface
  • Approximately 20 minutes to complete the Air Test

Prepare for the Air Test:

  • Place your assembled Outlaw Metal Detector on the non-metal surface as shown in Figure 10
  • Make sure there are no metal objects near the coil
  • Remove any jewelry from your hands and wrists


Figure 10 – Outlaw on Non–metal Surface

Start with these control settings:

  • Threshold (THRS) control to minimum (all the way counter-clockwise)
  • Sensitivity (SENS) to OFF
  • Discrimination level (DISC) to MIN
  • MODE set to DISC
  • Ground Balance (GROUND BAL) – starting point not important for air test

 

Do the following steps:

  1. Ground balance (GROUND BAL) knob
  2. Perform an audio battery test
  3. Adjust the threshold (THRS)
  4. Try the no-motion ALL METAL MODE
  5. Adjust the sensitivity in the discrimination (DISC) MODE
  6. Adjust the discrimination level (DISC)
  7. Use RETUNE button in discrimination (DISC) MODE

 

Step 1 – Ground Balance (GROUND BAL) Knob

The ground balance setting is extremely important when the mineral conditions in the ground are strong enough to affect the Outlaw Metal Detector. (See the Field Use Section on ground balancing for actual use.)

The ground balance is not important for the air-test, so this step is done before the unit is turned on.
Turn the Ground Balance (GROUND BAL) knob one full turn counterclockwise. (e.g. if the knob pointer was at the 12:00 position, turn the knob one direction until the pointer is at the 12:00 position again). Notice that there was no stop on the knob. The plus (+) and minus (-) on the decal indicate a direction, not a position. Turn the knob one more full turn in the counterclockwise direction. There is still no stop on the knob. The potentiometer (pot) inside will turn 3 and ¾ turns before the internal adjustment ends. When the inside of the pot stops, there may be a slight increase in the drag on the knob as it continues to turn. This will not cause any harm to the pot. Turn the knob one full turn clockwise. Don’t adjust this knob again for the remainder of the air test.

Now you should understand that the ground balance knob will have a different feel than the other knobs.

Step 2 – Perform an Audio Battery Test

When the unit is first turned on, the Outlaw Metal Detector will automatically activate the audio battery test.

Turn the SENS control from OFF to 1.

A solid tone will be heard for up to 6 seconds. The length and the volume of the tone indicate the strength of the battery. When the tone stops, the detector is up and running and the control can be adjusted. If there is no tone at all, the battery needs to be replaced.

Now you should understand that when the unit is first turned on, the duration of the tone indicates the health of your battery.

Step 3 – Adjust the Threshold (THRS)

The Threshold (THRS) is the base or minimum sound in the ALL METAL MODE.

Flip the MODE switch all the way to the left to the automatic retune mode (AUTO). There should be no sound coming from your speaker. Turn your Threshold knob (THRS) up slowly from the 8:00 to the 10:00 position, then from the 10:00 to the 12:00 position, then to the 2:00 position. Finally, turn it all the way to the 4:00 position. At this point, there should be a fair bit of noise coming from the speaker. Turn the Threshold down until the noise is just barely noticeable.

Wave a coin above the coil. When the coin is close to the coil, the detector should make a significant amount of sound. Slowly waive the coin above the coil as you move the coin away from the coil. The response should get smaller until the detector can no longer detect the coin.

Now wave the coin above the coil at a height where the detector has only a small sound as the coin passes. Turn the Threshold Control down to the minimum position. Wave the coin again at the same height. The coin may not register at all. Turn the Threshold up to near the MAX. Again, waive the coin at the same height. It will be difficult to hear the small change from the coin against an already loud tone. Turn the Threshold back to just barely a hum. This is the correct setting. The Threshold should not need much changing for a given coil. It should be reset if the coil is changed.

Now you should know how to set the Threshold (THRS) to maximize your ALL METAL depth.

Step 4 – Try the No-Motion ALL METAL MODE

In the AUTO tune MODE, the sound at the speaker always wants to return to the baseline threshold level. This means that target detection requires motion. However, in the ALL METAL MODE (no retune), the sound at the speaker responds to the target only.

Flip the MODE switch to ALL METAL, which is the no motion ALL METAL MODE. Hold a coin four to five inches above the coil. The sound at the speaker should remain loud. As the coin gets closer to the coil, the sound gets louder. As the coin gets farther from the coil, the sound gets softer.

Now bring the coin back to about four inches above the coil. Press and release the RETUNE button. The sound will return to the baseline threshold level. Move the coin back and forth. There should be no sound or a very small signal. Move the coin slightly closer to the coil and wave it back and forth. The signal should be very sharp. By retuning the detector near a target, the current signal was subtracted off and only a bigger signal will get to the speaker. This technique is extremely useful for pinpointing a target in the ground.

Now you should know how to use the RETUNE button to pinpoint a target in the no motion ALL METAL MODE.

Step 5 – Adjust the Sensitivity in the Discrimination (DISC) MODE

The Sensitivity Control is adjusted to control the amount of noise in the Discrimination (DISC) MODE.

Flip the MODE switch to the Discrimination MODE (DISC). Wave a coin above the coil, slowly moving farther away from the coil. The signals will start out loud and sharp, then decreasing in intensity as the coin get farther from the coil. When the coin movement no longer makes a signal, turn the Sensitivity Control (SENS) up to 7. The coin should make noise over the coil higher than when the Sensitivity was set to 1. Stop waving the coin. Turn up the Sensitivity to 10. Inside a home, there may be enough electrical noise that the speaker will start to chatter. Try turning up the Sensitivity to the maximum setting. Small signals may be difficult to distinguish from background noise. So the proper setting for the Sensitivity is as high as possible while having a minimum of chatter. Ground minerals, electrical lines, cell phones, cell phone towers, and other environmental effects may all affect where the proper setting for the sensitivity needs to be. Adjust the Sensitivity Control at each new location or if excessive chatter is noticed on the speaker.

Now you should know how to adjust the Sensitivity (SENS) setting for maximum performance in the Discrimination (DISC) MODE.

Step 6 – Adjust the Discrimination (DISC) Level

The Discrimination Level is adjusted to silence more or less targets.

With the Discrimination Level (DISC) set to MIN, you should be able to wave multiple targets over the coil and have the detector beep. At the MIN level, the unit will get rid of some iron targets.

Start by waving the nickel about four inches over the coil. The coin should generate a clear and repeatable signal. Start to turn up the Discrimination Level (DISC) while waving the target. As the DISC level approaches the 12:00 position, the sound should become broken and inconsistent. This is the discrimination circuit working to get rid of the target response. As the Discrimination Level is turned higher, the response should go away. There should be no response, except an occasional chip or pop. The target has been discriminated out.

Turn the Discrimination Level back to 12:00. Wave the zinc penny about four inches above the coil. Turn up the Discrimination Level until the sound becomes broken and inconsistent. This Discrimination Level will be very different than the level for the nickel.

Wave the quarter about four inches above the coil. Turn up the Discrimination Level to the maximum. The quarter may sound good or be broken. The maximum Discrimination Level is not useful for typical hunting, but it may help identify targets before recovery.

Now you should know how to adjust the Discrimination Level to check targets prior to recovery.

Note: It is recommended to redo this step later with good and bad targets (pull tabs, pop tops, foil, screw caps, gold rings, etc.) to see many Discrimination Levels.

Step 7 – Use RETUNE Button in Discrimination (DISC) MODE

The RETUNE button can be used to change the mode for a temporary ALL METAL check.

Wave the nickel about four inches over the coil. Turn the Discrimination Level (DISC) up until the signal is just broken. Now depress the RETUNE button completely down with your thumb and waive the coin over the coil again. The unit is in an ALL METAL MODE with RETUNE. The nickel should make a solid tone, but it will require motion to make the beep. Release the RETUNE button. Place your thumb on the bezel surrounding the RETUNE button. Pressing the switch part way down will activate the ALL METAL MODE, but will not retune. Hold the nickel over the coil. The sound should only change when the target moves.

Now you should know how to activate the ALL METAL MODE using the RETUNE button only. You should also be able to retune to pinpoint (as in step 4 above) using only the RETUNE button.

This concludes the air test. You should have a basic understanding of all the controls of the Outlaw Metal Detector.


FIED USE

Every detector must be properly tuned in order to perform at its peak and provide maximum depth. In fact, the more powerful a detector is, the more critical the tuning becomes. Less powerful detectors are more tolerant of improper tuning, but are also not capable of the depth of a properly tuned, high-powered detector such as the Outlaw. To achieve peak performance from your Outlaw, be sure to properly adjust the GROUND BAL control in ALL METAL MODE. The settings of this control will also affect the detector’s performance in Discrimination MODE, so make sure to adjust it properly first, even if you will not be hunting in ALL METAL MODE. Remember: improper tuning will reduce performance and can also cause “false” and erroneous “ghost signals”.

ADJUSTING THE POLE AND SEARCHCOIL

The pole length should be adjusted so that the detector does not become uncomfortable or tiring after long periods of use. The detector grip should rest in your hand with your arm relaxed, your elbow straight but not locked, with the pole extending out in front of you at the approximate angle shown in the photo.
You should be able to swing the detector back and forth in front of you – using relaxed shoulder movement- while keeping the searchcoil as close to the ground as possible. This swinging movement is often called a “sweep.”
The searchcoil should not touch the ground during your sweep. The pole length should be adjusted to allow this without having to lift the detector with your elbow or shoulder. The searchcoil should rest about one inch above the ground while you are standing erect; the angle of the searchcoil should allow the bottom to be parallel to the ground.
The pole length is adjusted by loosening the pole lock, then depressing the spring buttons and extending or shortening the pole until the spring buttons click into the set of holes that give you the most comfortable pole length.
To adjust the searchcoil angle, loosen the searchcoil thumb nut slightly and move the searchcoil into the desired position: tighten the searchcoil thumb nut by hand so that the searchcoil will hold in place.

TUNING YOUR DETECTOR

Tuning your Outlaw can be done in 6 simple steps:

  1. Wait up to 6 seconds until the Audio Battery Test is complete once the detector is turned on.
  2. Check/Adjust Threshold using THRS control.
  3. Ground Balancing the detector using the GROUND BAL control.
  4. Setting the operating mode using the MODE switch.
  5. Setting the Discrimination Level using the DISC control.
  6. Setting the Sensitivity Level using the SENS control.

NOTE: Ground Balancing should be done while in ALL METAL MODE and AUTO Tune MODE. Setting the Discrimination Level and the Sensitivity Level should be done while operating in Discrimination MODE.

AUDIO BATTERY TEST

When you first turn the unit from OFF to ON, the automatic battery test circuit is activated. You will hear an audio tone, the volume and duration relating to the battery strength. When the battery test is no longer heard, the 9 V battery needs to be replaced. See “Installing the Battery” in the GETTING STARTED section.

CHECK AND ADJUST THRESHOLD

Set the MODE switch to AUTO, to be in the ALL METAL MODE with retune. Check that the threshold is set correctly to a faint hum. Adjust the threshold if it is not correct.

GROUND BALANCING

Ground Balancing is not a difficult procedure, but it is critical if you desire maximum depth and stability. It is especially important if you are using the Outlaw in highly mineralized ground.

NOTE: No matter where you will be searching, or whether you will be operating in the ALL METAL MODE or Discrimination MODE, make sure the detector is properly Ground Balanced in the AUTO tune mode of ALL METAL first.

As shown in Figures 11 and 12 below, raise the searchcoil 6 to 8 inches above the ground, level and parallel to the ground. You will lower the searchcoil quickly to ground level and return back to the starting point 6 to 8 inches above the ground. This “pump” is designed to show the ground to the Outlaw.

As you listen to the threshold, one of three things should happen:

1. The sound will remain the same throughout the pump.
2. The sound will increase on the way down, or
3. The sound will get quiet on the way down.
Figure 11 – Lower Coil Quickly Figure 12 – Return to Starting Point

Which one of these happen will determine what you need to do to properly Ground Balance your detector for your area.

  1. If there is no change in the Threshold sound as you lower the coil, then either there are no minerals in the ground or you have the proper Ground Balance. Either way, you can proceed to hunt.
  2. If the Threshold sound gets louder when you lower the searchcoil, then the Ground Balance is too positive. To balance the detector, turn (see note below) the GROUND BAL knob counter clockwise (- direction). “Pump” the detector again and repeat these steps.
  3. If the Threshold sound goes away when you lower the searchcoil, it will get louder as you pull the searchcoil away from the ground. The Ground Balance is too negative. To balance the detector, turn (see note below) the GROUND BAL knob clockwise (+ direction). “Pump” the detector again and repeat these steps.

 

NOTE: Start out using large turns of the GROUND BAL knob, ½ to ¼ of a full turn. Anytime the Ground Balance goes from negative to positive or positive to negative, the proper Ground Balance is between the previous setting and the current setting. Take much smaller steps until the setting is as close to quiet as you can make it.

Important things to remember when Ground Balancing with this method:

    1. Make sure you are Ground Balancing in a clean area and not lowering the searchcoil down over a piece of metal.
  1. When you pump the searchcoil, be sure that you DO NOT tilt the searchcoil at an angle, as shown in Figure 13.

NOTE: As you move to different areas throughout the day, you may need to make occasional small adjustments to the GROUND BAL knob to maintain peak performance.


Figure 13 – Do Not Tilt the Searchcoil at an Angle to the Ground

SELECTING THE PROPER OPERATING MODE

The Outlaw offer two operating modes: ALL-METAL and Discrimination (DISC) MODE.

The ALL-METAL MODE will detect all metal. Use this mode for pinpointing objects, determining the amount of “trash” metal in an area, to recover all items including iron, or for gold nugget hunting. The Discrimination (DISC) MODE allows the discrimination of some types of metal. Use the DISC MODE when “coin shooting” or jewelry hunting to eliminate some of the “trash” metal.

The ALL-METAL MODE has two options: AUTO tune or no auto tune. When the switch is in the AUTO position, the Outlaw will slowly retune the machine to bring back the threshold tone. This means that the signal on a target held stationary under the coil will slowly fade back to threshold level. This mode is recommended for most ALL-METAL hunting as it provides the most stability.

When the switch is in the center position marked ALL-METAL, there is no auto tune. The signal from a target held stationary under the coil will not fade until the RETUNE button is pressed. This mode is useful for precise pinpointing, identifying target size, line tracing and ore sampling. For precise pinpointing, find the searchcoil position near the strongest signal. Hold the RETUNE button down to retune the Outlaw to the current target. Release the button, and the signal as you move the searchcoil should be very small.

Note: Pressing the RETUNE button slightly in the Discrimination mode will change the mode to ALL-METAL no auto tune. Pressing the RETUNE button completely will enable the fast retune. With practice, you should be able to use the RETUNE button to change the mode and retune a target to quickly pinpoint a target.

SETTING THE DISCRIMINATION LEVEL

The DISC LEVEL control is used to adjust the detector’s response to unwanted trash metal when operating in the Discrimination MODE. At the lowest setting (MIN), the detector will ignore most iron objects, but will still respond to light foil, bottle caps, pull tabs and most other metal objects,. As the Discrimination Level is increased, more of these trash metal objects are ignored and give no target response sound when inside the searchcoil’s range.

The DISC LEVEL should be set to your desired “rejection level” for the particular area your searching. We recommend starting at a low setting if you are unsure of how much trash is in the area. Adjust the level higher if you find yourself digging more trash than you like. Remember that with any metal detector, you will lose target response to small gold rings and nickels when Discrimination is set at the pull tab rejection level. So, digging some trash will increase your number of good finds.


Figure 14 – Discrimination (DISC) Level Settings

In Figure 14 above, DISC settings are shown where many of the common metal objects are ignored by a typical detector. Each detector can vary a little due to manufacturing tolerances so you should experiment with your detector and become familiar with its rejection levels for these trash metal objects.

When searching in the Discrimination MODE, we recommend that you periodically switch to ALL METAL MODE and check the area you are searching to get an idea of how much trash is really there. In extremely trashy areas, it may be desirable to switch to a smaller searchcoil, even though doing so may cause a loss of depth. The smaller coil will allow you a better chance of finding coins between the close pieces of trash.

SETTING THE SENSITIVITY LEVEL

In lightly to moderately mineralized ground, you can usually set the Sensitivity (SENS) control as high as 8 to 10 (normal maximum setting). In the right conditions, you can move the Sensitivity into the MAXBoost (orange area past the 10) for increased depth.

To adjust the Sensitivity Level to your search conditions, first set the operating MODE to DISC and turn the Sensitivity (SENS) control clockwise as far as possible until the detector just begins to “chirp” intermittently. If the chirping is too frequent, simply turn the control counterclockwise just enough to cause the chirping to subside. Once set, this control should not require readjusting unless site conditions change.

Occasionally you may need to reduce the setting to eliminate “false signals” caused by difficult conditions. Some of the many things that can cause the response of the detector to become erratic during regular use are very large targets, highly mineralized ground on trashy sites, intense ground mineralization changes, CB radios, radio and TV broadcasting antennas, and nearby sources of electrical interference.

There false signals are generally short, choppy sounds that are not repeatable and therefore can easily be distinguished from a good target response sound. They can be distracting though, and reducing the Sensitivity Level will help reduce these signals with an accompanying loss of target sensitivity.

Extreme conditions such as wet salt sand may require you to lower your Sensitivity setting into the 2 to 5 range. Overall, you should always set the Sensitivity Control as high as possible, while still getting smooth operation.
NOTE: The no-motion ALL METAL MODE of the Outlaw is not affected by the Sensitivity Control.

RECOGNIZING FALSE SIGNALS IN DISCRIMINATION MODE

When operating in the Discrimination MODE, some “false signals” may be caused: 1) heavy concentrations of trash metal objects, 2) very large trash metal objects or 3) electrical interference. These signals are generally short, choppy sounds and sound different than “good signals” (good target response sounds).

At the end of your sweep, as you reverse the coil direction, the detector is most susceptible to trash-induced noise. There are two ways to tell whether these sounds are good deep signals or trash “noise”. The first is by repeatability. Trash-induced noises will not be regular as you sweep the coil over the suspected target several times, whereas a good target response will be repeatable. The second method is to switch to ALL METAL MODE and check the target response sound. If the response is weak, it may well be a deep, good target. But if the response is very strong, it is probably trash. Note that a coin close to the surface can give a double beep sound, but it is regular and repeatable. Raising the coil an inch or two will restore the single beep on surface targets.

When searching in the Discrimination MODE, it is best not to use a higher Discrimination Level setting than necessary. Nickel and most smaller rings are rejected when the Discrimination Level is set to reject pull tabs on any metal detector that is a TR Discriminator like the Outlaw. If you don’t dig any junk at all, you are surely passing up a lot of good finds as well. Set the Discrimination Level only high enough to suit the conditions where you are searching. If there is any doubt whether a target is good or not, dig it.

PERFORMING THE AUDIO BATTERY TEST

Your Outlaw is equipped with an automatic battery test circuit so you can always be sure you are getting top performance from it. The battery should be checked after the detector has been on for about 10 minutes and then periodically if you are using it for long periods.

To activate the Audio Battery Test, simply turn the detector off momentarily and then back on again. If the battery is fresh, the detector should emit a continuous and loud “beep” sound that lasts for about 4 or 5 seconds, and then slowly fades into silence. As the battery ages, this sound is less intense and fades out more quickly. When you hear only a brief “buzz” or no sound at all, replace the battery with a fresh one.

If you prefer, a rechargeable Nickel-Cadmium (Ni-Cad) battery can be substituted for the standard 9 volt alkaline battery. Individual 9 volt size Ni-Cad cells, as well as the chargers for them, are readily available at most electronic supply stores. They are installed into your detector in the same manner as non-rechargeable batteries. The Battery Test sound on a Ni-Cad will be weaker than an alkaline in the beginning, but will not weaken as much with use.

CONTROLLING AUDIO VOLUME

The speaker in the Outlaw does not have a volume control. The volume should be sufficient to accurately hear the target response sound in most environments. If more or less volume is required in your particular situation, we recommend using a set of good quality headphones with a built-in volume control.

HANDLING YOUR DETECTOR

The detector should be held in a position that is comfortable for you as shown in the “Adjusting the Pole & Searchcoil” section in the Field Use Section (Page 18). Swing the detector from side to side in about a three foot arc, overlapping succeeding strokes well. This motion is called a “sweep”. The Outlaw was designed to get maximum depth without the frantic pace required of earlier motion detectors, so go at a pace that is comfortable for you. In fact, trying to hunt too fast may even cause a loss of depth in heavily mineralized locations.

Regardless of which MODE you are using, try to keep your searchcoil height constant and close to the ground, Most people tend to raise the coil at the end of a sweep – much like a pendulum – especially if they are hurrying. Try to avoid this, as any increase in height from the ground will cause a corresponding loss of depth.

In areas with well-kept lawns, the easiest way to maintain a constant searchcoil height is to allow the coil to rest on the grass as you sweep from side to side. In rough and rocky areas, it is best not to “scrub” the coils on the ground, as the rocks will act like abrasives and wear away the coil bottom (an optional coil scuff cover will protect against this). Sweep the coil as close to the ground as possible without touching. Hitting the ground or rocks may cause a false signal much like a desired target would. Sweeping the coil too high above the ground results in loss of depth.

PINPOINTING A TARGET

When pinpointing a target, the ALL METAL MODE/Normal Tuning can offer advantages over Discrimination MODE, such as no false signals and no need to move the searchcoil to get a target response.

A good method for pinpointing in ALL METAL MODE is “X-ing” the target with the searchcoil. Remember that the target’s response sound is always greatest when the target is directly under the center of the searchcoil. To “X” a target, sweep the searchcoil over the target from side to side and then from front to back until you can identify the center of the X – the spot on the ground where the target response sound is the greatest. Hold your searchcoil stationary over the center of the X and hit the RETUNE switch. Now repeat the X-ing, this time watching for the exact spot-under the coil center where the detector beeps. That spot is where the target is located.

Pinpointing a target in Discrimination MODE is probably best done by “X–ing” as well. Remember that the detector will beep just as the target passes under the center of the searchcoil.

Slowing the sweep will help you pick out the center of the X because the target response is reduced at very slow speeds making it easier to correlate the sound with the coil center.

Another easy method is to sweep the coil from side to side across the target in very short sweeps as you slowly move forward and backward across the target. Slow down the sweep rate and shorten the sweeps until you just barely get a response at one spot. The target will be directly below the coil center at this response time.

Another method of pinpointing in Discrimination MODE is to quickly change to ALL METAL MODE to check the target response. Remember that ALL METAL MODE is not susceptible to the false signals of Discrimination MODE and can sometimes give a clearer and more consistent response to difficult targets such as a dime buried next to a pull tab. By switching back and forth between modes and comparing the target response sound in ALL METAL to the target response sound in Discrimination MODE, you can often better identify the likely location of the target.

Finally, raising the searchcoil during pinpointing can also help by narrowing the response to the target. Practice pinpointing often, and you will soon become more accurate and faster.

RECOVERING A TARGET

If the target is shallow and the soil is soft, you may be able to “probe” and find the exact location of the target before you dig it. Since filling all holes after you recover the target is so important digging a small precise hole is best. If the target is deep, you may need to dig a larger hole. As you dig, occasionally check the hole with your detector to see if you have moved the object, can probe it or have already dug it. Be sure to fill all holes after you recover the target. Two methods are shown on pages 37 and 38 that work most everywhere.

Be sure to protect your hobby by leaving the site cleaner than you found it and with all holes filled.

PLANTING A TEST GARDEN

To better learn how your detector will perform in the field, it would be helpful to bury some coins and trash metal junk items in an area that you know is clear of other metal objects. Check the area with Discrimination Level set at MIN to be sure it’s clear of trash, then bury the targets at least 1 foot apart and from 2 to 4 inches deep to start. Make a map of the area to be sure you know what each target is and how deep it is. Practice on these targets to familiarize yourself with your detector’s target response. This will also help you learn the proper sweep speed for best operation. This type of practice area is often called a “test garden” or “test bed” and is one of the best tools to help you develop your metal detecting skills.


GENERAL INFORMATION

BASIC CARE

The Outlaw is a sturdy instrument, but it is not designed to withstand abuse. In caring for your Outlaw, there are several important “DO NOTs” to remember. DO NOT use it to pry rocks loose or to beat bushes out of the way. DO NOT drop the machine into water. DO NOT use it unprotected in the rain. DO NOT leave it exposed at night where dew could form on it. DO NOT store it in places that could get extremely hot (next to a woodstove or in an attic). DO NOT leave it in the trunk of a car or in the back of a hatchback-style car where high temperatures could build up. DO NOT store it with the battery installed as batteries may leak. DO NOT spray lubricants such as WD-40, or any types of cleaners, solvents, sealants or other chemicals into or onto the electronic parts, switches, or controls. And finally, DO NOT attempt to modify or repair the detector’s electronics as this will void your detector’s warranty.

THE WARRANTY DOES NOT COVER DAMAGE RESULTING FROM AN ACCIDENT, NEGLECT OR ABUSE.

PROTECTING YOUR INVESTMENT

Often detectorists are disappointed when their new detector slowly becomes less and less responsive and seems to have lost some of its original peak performance. You can help avoid this from happening to you detector by following these basic care and protection guidelines:

  • Operate your detector exactly as recommended in this operator instruction manual.
  • Use only high-quality alkaline batteries of the correct voltage. Never substitute a different voltage. When using a Ni-Cad battery, always use a separate convertible pack with the proper voltage output for the detector’s design.
  • Remove the battery from the detector after each use. This will prevent damage to the detector if the battery leaks.
  • The searchcoil cable is hard-wired to the searchcoil and protected by a strain relief. It is very important that the strain relief remains intact and should never be adjusted or tampered with.
  • Keep cables properly wound around the pole stems and protect them during use. Floppy, pinched, or cables that become snagged during use may short, causing erratic noises or unnecessary replacement of the searchcoil.
  • Sweep the searchcoil carefully, especially when using around rocks and building foundations. Avoid hitting the searchcoil against hard, solid objects and surfaces.
  • Keep your searchcoil slightly off the ground during the sweep, especially when using in gravel or hard, rocky dirt.
  • Always use a properly designed protective scuff cover on the searchcoil. (See “Optional Accessories” on the next page.)
  • Remove and clean out scuff covers periodically to avoid buildup of mineralized dirt particles which will affect performance.
  • The searchcoil is waterproof and can be submerged in either fresh or salt water. After the searchcoil is used in salt water, rinse it and the lower stem assembly well with fresh water to prevent corrosion.
  • The searchcoil is waterproof but the electronics are not, so always prevent any moisture or water from entering the control housing and never allow the cable connectors to become submerged in water.
  • If there is a possibility of rain or spray, use a Tesoro rain jacket or protective weather resistant pouch. If you use anything other than the Tesoro rain jacket, leave the bottom open. The control housing needs to “breath” to prevent condensation on the electronic board.
  • After each use, clean the detector with a soft cloth to remove dust, moisture, or other contaminants.
  • When transporting the detector in a car during hot weather, store it on the floor of the passenger compartment if possible. Using a carry bag gives additional protection. In any case, never allow the detector to roll around unprotected in the trunk or back of a pickup truck.
  • Protect your detector from dust, moisture, and extreme temperatures during storage.
  • When shipping, use the original factory carton or similar heavy-duty container and provide a minimum one inch of padding around all parts.
  • Treat your detector as you would any sensitive electronic instrument. Though ruggedly constructed and designed to withstand the demands of normal treasure hunting, proper care is essential.

Tesoro metal detectors and genuine Tesoro accessories are sold only through independent Tesoro Authorized Dealers, who are almost always metal detectorists themselves. They can answer your questions about your Tesoro detector, what accessories may be helpful, and about metal detecting in general.

SCUFF COVERS

Each of your coils come with a scuff cover. We highly recommend using the scuff cover to protect your coil during use. Since the scuff cover will take the wear and tear that would otherwise damage your coil, it will eventually need to be replaced. The part numbers for the Outlaw scuffs are:

SCUFF-8R-WHT
SCUFF-12X10W-WHT
SCUFF-5.75R-WHT

SEARCHCOILS

Three searchcoils are provided with the Outlaw for a broad range of hunting situations. The 8″ concentric searchcoil is designed for best all-around performance.

A smaller searchcoil like the 5.75 provided with the Outlaw gives better “target separation” (that is, more distinct target response for metal objects buried closely together) which is very useful when hunting trashy sites. Very small searchcoils can deliver the best response and depth to small targets such as fine gold chains with some sacrifice in depth on larger objects.

Larger searchcoils give a wider sweep and provide greater depth especially on larger objects; however, they may not detect some very small objects such as half dimes and will have difficulty in very trashy areas.

Wide scan searchcoils ignore ground mineralization better than concentric searchcoils and may offer improved performance in extreme ground conditions.

The 12X10 wide scan searchcoil provided with the Outlaw is a large coil in the wide scan family.

Optional scuff covers are also available for any Tesoro searchcoil.

TESORO ACCESSORIES

Rain jackets are also available at your Tesoro Dealer. We recommend using a rain jacket during inclement weather or if there is a possibility that the control housing could be sprayed or showered upon. The Part # for the rain jacket that fits the Outlaw is ACCS-RAIN JACKET-SMALL.

The small detector bag provides a small convenient way to transport or to store your unit; however, the poles must be taken apart to fit in the bag. The large detector bag will take a detector without separating the poles.
Part # for the large bag is ACCS-CARRYBAG-LARGE
Part # for the small bag is ACCS-CARRYBAG- SMALL

HEADPHONES

Most metal detectorists prefer to use headphones instead of the detector’s built-in speaker. Headphones help block out background noise (such as wind) and make it easier to hear faint signals. Headphones with a built in volume control will allow you to adjust the sound volume to your preference. The headphone jack is located on the bottom of the Outlaw housing.

 


METAL DETECTORIST’S CODE OF ETHICS
  1. Always check federal, state, county, and local laws before searching. It is your responsibility to “know the law.”
  2. Abide by all laws, ordinances, or regulations that may govern your search or the area you will be in.
  3. Never trespass. Always obtain permission prior to entering private property, mineral claims, or underwater salvage leases.
  4. Do not damage, deface, destroy, or vandalize any property (including ghost towns and deserted structures), and never tamper with any equipment at the site.
  5. Never litter. Always pack out what you take in and remove all trash dug in your search.
  6. Fill all holes, regardless how remote the location, and never dig in a way that will damage, be damaging to, or kill any vegetation.
  7. Do not build fires, camp, or park in non-designated or restricted areas.
  8. Leave all gates and other accesses to land as found.
  9. Never contaminate wells, creeks, or any other water supplies.
  10. Be courteous, considerate, and thoughtful at all times.
  11. Report the discovery of any items of historic significance to the local historical society or proper authorities.
  12. Uphold all finders, search, and salvage agreements.
  13. Promote responsible historical re-search and artifact recovery and the sharing of knowledge with others.

SPECIFICATIONS
Operating Frequency 10.6 kHz
Searchcoil 5.75″ Round Concentric
Searchcoil 8″ Round Open Center Concentric
Searchcoil 12” x 10” Spoked Wide Scan
Searchcoil Family Epsilon
Cable Length Approx. 3′
Audio Frequency Approx. 630 Hz
Audio Output 36mm (approximately 1 ½”) Speaker & Headphone Jack
Headphone Compatibility ¼” Stereo Plug
Weight (may vary slightly) 2.2 lbs.
Battery Requirement One 9 volt DC (Alkaline)
Battery Life (typical) 10 to 20 hours
Optimum Temperature Range 30° to 100° F
Optimum Humidity 0 to 75% R.H.
Operating Modes Silent Search Discriminate
Threshold Based No Motion All Metal
Threshold Based Motion All Metal

WARRANTY SERVICE

 

 

Your Tesoro metal detector is covered by a Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

 

LIMITED LIFETIME WARRANTY

 

 

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001-2004  Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.

 

Tesoro Cibola Metal Detector Instruction Manual

Tesoro CIBOLA Metal Detector OPERATOR INSTRUCTION MANUAL

 


 

CONGRATULATIONS!

Your new Tesoro Cibola metal detector is part of a new series of detectors designed to provide you with many happy hours of enjoyment in the most rewarding hobby I can think of—treasure hunting. Ahead of you lie fascinating and exciting experiences as you step into the past—uncovering artifacts lost by past generations, or as you take pleasure in the great outdoors with family and friends searching for precious metals. I wish we could share these experiences with you, and all of us at Tesoro wish you the best of success.

Your Tesoro detector is capable of meeting your needs in a wide range of treasure hunting situations. As with any other metal detector, familiarity with this instrument is probably the limiting factor in determining how successful you can be. I recommend that you read this manual and fully understand how to operate this detector before attempting to use it in the field. As you become more familiar with your detector through practice, your rate of success will increase dramatically.

The Cibola is a precision electronic instrument that will last for years if properly cared for. Treat it right and it won’t let you down.

 

 

 


GETTING STARTED – UNPACKING THE BOX

Your Cibola was shipped with these parts:

1 Upper Pole Assembly

Fully assembled, including upper pole stem with handle grip, padded arm bracket and control housing.

1 Middle Pole Assembly With Pole Lock

1 ABS Lower Pole Assembly

Fully assembled, complete with two friction washers, mounting screw, and thumb nut.

1 9 x 8 Monolithic Searchcoil With 3’ Cable and Scuff Cover

1 9 Volt Alkaline Battery

1 Operator Instruction Manual

1 Tesoro Warranty Card

If any of these items are missing, contact the Tesoro Authorized Dealer where you purchased your detector immediately.

Assembling the Cibola is simple and requires no special tools. Just install the battery packs, mount the searchcoil on the lower pole assembly, connect the pole assemblies together, wrap the excess cable around the pole and plug the cable into the control housing. Finally, adjust the pole length and searchcoil angle and you’re ready!


INSTALLING THE BATTERY

Your Cibola is equipped with an automatic battery test circuit so that you can always be sure you are getting top performance. The battery should be checked after the detector has been on for about 10 minutes and then periodically when used for long durations.

To install or replace the battery, first make sure the SENSITIVITY control is set to POWER OFF—turned completely counterclockwise past the “click.” Remove the battery door from the back of the control housing. Do this by pressing your thumb firmly on the louvered square—at the bottom of the battery door—and sliding the battery door upward in the direction of the arrow.

Check the polarity on the battery and on the diagram inside the battery compartment. Make sure that they match and simply drop a fresh 9 volt alkaline battery into the compartment. Note: If the battery is not installed properly, damage may occur to your detector.

Replace the battery door by sliding it into place making sure the upper mount slots are in line and the lock tongue is snapped in place.


ASSEMBLING YOUR DETECTOR
    1. On the lower pole assembly, remove the mounting screw and thumb nut from the black nylon pole tip.
    2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and washers with those of the mounting ears.
      Note: The pole tip should fit very snugly into the mounting ears.

 

    1. Insert the mounting screw through the holes in the mounting ears and pole tip—entering from the side opposite the cable connection.
    2. Install the thumb nut on the mounting screw and tighten by hand.
      Note: Do not overtighten the thumb nut. It should be snug but not too difficult to loosen up.
    3. On the middle pole assembly, depress the two spring buttons and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes, thus locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together.

 

    1. Slide the lower pole into the middle pole until the spring buttons click into the first set of adjustment holes. Turn pole lock to tighten the assemblies into place.
    2. Wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment. Note: Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.
    3. Plug the male cable end into the female connector on the control housing and tighten the cable thumb nut. You are finished!
      Note: You will want to adjust the pole length and the searchcoil angle to your preference.

 


ADJUSTING THE POLE & SEARCHCOIL

The pole length should be adjusted so that the detector does not become uncomfortable or tiring after long periods of use. The detector grip should rest in your hand with your arm relaxed, your elbow straight but not locked, with the pole extending out in front of you at the approximate angle shown in the photo.

You should be able to swing the detector back and forth in front of you—using relaxed shoulder movement—while keeping the searchcoil as close to the ground as possible. This swinging movement is often called a “sweep.”

The searchcoil should not touch the ground during your sweep. The pole length should be adjusted to allow this without having to lift the detector with your elbow or shoulder. The searchcoil should rest about one inch above the ground while you are standing erect. The angle of the searchcoil should allow the bottom to be parallel to the ground.

The pole length is adjusted by loosening the pole lock, then depressing the spring buttons and extending or shortening the pole until the spring buttons click into the set of holes that give you the most comfortable pole length.

To adjust the searchcoil angle, simply loosen the searchcoil thumb nut slightly and move the searchcoil into the desired position. Tighten the searchcoil thumb nut by hand so that the searchcoil will hold in place.

 


QUICKSTART – SELF-GUIDED TUTORIAL

The Quickstart is designed to teach you how to use your new Cibola. It provides a quick and easy means of learning your detector and the concepts behind all of the functions.

You will need the following items:

  1. Your fully assembled Cibola.
  2. An iron target (a small nail or screw will do), an iron washer, a nickel, a zinc penny (1982 or later), a quarter and a couple of different pull tabs.
  3. A nonmetal table top or counter.

Here’s what you will do:

  1. Perform Audio Battery Test.
  2. Adjust THRESHOLD.
  3. Adjust SENSITIVITY.
  4. Perform Air Test in DISC Mode.
  5. Perform Air Test in PINPOINT Mode.
  6. Super Tune Your Cibola.
  7. Adjust FREQ Switch.
Prepare for the Quickstart

Place your assembled Cibola on the nonmetal surface. Make sure that there are no metal objects near the coil and remove any jewelry from your hands and wrists.

Start with the controls like this:

  1. THRESHOLD, SENSITIVITY and DISCRIMINATE LEVEL knobs turned completely counterclockwise.
  2. FREQ switch in the center position.
Perform Audio Battery Test

Turn the SENSITIVITY knob from OFF to about 7 or 8. You will hear a series of quick beeps. If the battery is fully charged, you will hear 6 or 7 beeps. When you hear only 1 or 2 beeps, it will be time to replace your battery. This test is only performed when the detector is first turned on. If you would like to check the condition of your battery while hunting, turn your detector off and on again and listen to the beeps.

Adjust THRESHOLD

To adjust the threshold tone, push and hold the PINPOINT button and then turn the THRESHOLD knob clockwise until you hear a slight but steady tone. You will have to turn the knob to somewhere between the 10 o’clock and 3 o’clock position to get the best hum. Once you have set the THRESHOLD, release the PINPOINT button. This will put you back into the DISCRIMINATE Mode and you can continue with the Quickstart.

The purpose of the threshold tone is to give a reference to judge targets for pinpointing and to super tune the Cibola. (For more information on super tuning, see the “Super Tune Your Cibola” section on page 13.)

In the field, some targets may be small enough or deep enough that they will not be able to generate an audio signal by themselves. By monitoring a threshold tone, you already have an audio tone so changes are easier to hear. However, if the threshold is set too soft or too loud, small changes in the signal will be hard to hear. Take some time and find a threshold level that is right for you.

Adjust SENSITIVITY

The discriminate circuit uses a silent search mode, meaning that no sound will be heard until the coil goes over a target. The most common use of the detector is to hunt in the DISCRIMINATE MODE and push the PINPOINT button to pinpoint a target. This will give you the advantage of ignoring unwanted targets and not having to listen to the threshold hum until you are ready to pinpoint and dig a target.

The all metal circuit uses a single channel to detect various metals. The discriminate circuit uses two different channels, then amplifies and filters them. The detector will then compare the signals and determine whether or not to beep at the target. While there is a great advantage to ignoring unwanted targets, it can make the circuitry more susceptible to interference. A number of outside conditions such as power lines, highly mineralized soil, and wet salt sand can cause interference.

The SENSITIVITY knob is used to raise or lower the power to the operational amplifiers, which changes the gain. Gain is a measurement of how much a signal is amplified. The higher the gain the more depth and sensitivity to small objects a detector has. Unfortunately, any small interference that is amplified can cause the detector to become erratic. The SENSITIVITY control is used to find the best gain setting in any location without letting the detector become unstable.

The SENSITIVITY knob is numbered from MIN to 10 and then has an orange area called the Max Boost zone. For normal hunting, anywhere in the numbered zone will work very well. However, the Max Boost will allow you to increase the power to the operational amplifiers to the point of overload. This may cause your detector to become unstable and force you to turn the SENSITIVITY knob to a lower setting. An overload situation will not hurt your detector, but it will maximize the gain that is used by your detector. This can, in certain conditions such as low mineralization in the soil, cause your detector to penetrate deeper into the ground and become more sensitive to small targets.

Take some time to try waving targets in front of the coil with different sensitivity settings. Notice that the higher the sensitivity setting, the farther away from the coil that a target can be and still respond with an audio signal.

Perform Air Test in DISC Mode

As discussed before, the discriminate mode is used to filter unwanted targets from good targets. The principle behind this is pretty simple. The detector sends out a signal and then receives it back creating a small electronic field. As metal passes through the field that the detector generates, it causes a change in the received signal. The amount of change that each type of metal causes is fairly constant; therefore, we can tune our detectors to miss targets that we don’t want to find. The change is based on the type of conductivity that each target has. The general list of conductive targets is as follows: iron, foil, nickels, gold jewelry, pulltabs, screw tabs, pennies, and silver coins starting with dimes and working up to silver dollars. This list is only meant to be a guide. There is a point that some pulltabs, nickels, and gold jewelry overlap. Also, the depth of the target and its orientation in the ground can change the received signal. A coin that is flat to the coil will produce a better signal than a coin that is on edge. Take some time to try different combinations of depths and orientations of your targets and find out how your detector responds.

We are now ready to discriminate targets from each other. We will start with the DISCRIMINATE LEVEL at MIN. Please notice that the DISCRIMINATE LEVEL knob has words that correspond to the items that are discriminated out.

All four targets (the iron, nickel, pulltabs, and quarter) will respond with a good audio signal at the MIN setting. Next, we will turn the DISCRIMINATE LEVEL up to IRON. This should be high enough to knock out the iron target and still get a positive response on the nickel, pulltabs, and quarter. When you are done with the IRON level, turn the DISCRIMINATE LEVEL to around the 5¢ setting. This level is high enough to knock out the nickel. At this time, the iron target and the nickel should give no response, while most of the pulltabs and the quarter will give a solid response. Next, turn the DISCRIMINATE LEVEL knob just past the TAB marking. At this time, most or all of the pulltabs should not give any audio signal. Only the quarter should give a strong signal. Now, roll the DISCRIMINATE LEVEL all the way to MAX. Notice that the quarter is still responding. The discrimination will not go high enough to lose most of the silver coins.

This air test is designed to quickly show you how your discriminate mode works. Each machine may be a little different from all of the others, so you may want to take some time and try different targets to find responses of your machine. At a later date, you may want to build a test garden to test your detector in the field.

Perform Air Test in PINPOINT Mode

When you are hunting in the DISCRIMINATE Mode, the PINPOINT button will allow you to momentarily switch into the ALL METAL Mode. The PINPOINT button is springloaded and must be pressed and held to shift into the ALL METAL Mode.

At this time, you are in the Silent Search Discriminate Mode. Press the PINPOINT button, and you will immediately hear the threshold audio tone. This indicates that you are now in the ALL METAL Mode. Your Cibola has a VCO-style ALL METAL Mode. You will find that as targets get closer to the coil, the threshold tone will get louder and higher in pitch.

With the PINPOINT button pressed in, try waving your targets in front of the coil. Start from a distance of 10 to 12 inches away from the coil and slowly work your way closer to the coil. Then, try starting from 6 inches away from the left or right of your coil and work your way to the center of the coil. Notice the changes of the audio signal. Your strongest signal will always be closest to the center of the coil. Additional information can also be learned by the signal strength and pitch. A smaller or deeper target will give a less noticeable change in the threshold than a larger or shallower target will give. Take some time and try all of your argets at different depths to find out how your detector sounds.

Take some time to try different DISCRIMINATE levels and then check them with the PINPOINT Mode. You will notice some distinctly different tones. Practice and experience will give you large amounts of information that will help you decide whether or not to dig a target in the field.

Super Tune Your Cibola

The Cibola can be set up to get even better depth and sensitivity while operating in the DISCRIMINATE Mode. Super tuning is accomplished by working in the DISCRIMINATE Mode and turning the THRESHOLD knob to the highest setting.

Super tuning your Cibola will cause the threshold audio level to be set too high for accurate All Metal or Pinpointing operation.

To start, turn the DISCRIMINATE LEVEL knob to just above the IRON setting and turn the SENSITIVITY knob as high as it will go without causing the detector to chatter. Check a target or two and notice how far away you can get from the coil and still receive a repeatable audio signal. Now, turn up the THRESHOLD knob and recheck the targets. You should see an increase in the distance from the target to the coil. Push the PINPOINT button. Notice that the threshold tone is far too loud to accurately identify some of your targets.

Take some time to try different targets and settings in an air test to see how well your detector will work in the ground.

Adjust FREQ Switch

Your Cibola comes equipped with a frequency shift switch (FREQ1, FREQ2, and FREQ3). This switch is used to change the operating frequency of your detector. This ability will help you to work a larger number of areas. The most common use would be during a large hunt where another hunter has the same frequency machine as your detector. Two machines that are on the same frequency will start broadcasting to each other. This is called crosstalk. If you experience crosstalk in the middle of a hunt, just flip the FREQ switch to another setting. This is very easily done and can be done in the middle of a sweep. Changing the frequency can also help in some urban areas where there may be a high concentration of radio or cell phone traffic. If your detector is acting erratically after adjusting the SENSITIVITY, try shifting the FREQ switch and resetting the SENSITIVITY.

Changing the operating frequency will not change the audio frequency of the signal in the speaker. The audio frequency is controlled by a microprocessor and will not shift.

Conclusion

Congratulations, you have just finished the Quickstart for your new Cibola detector and in the process have learned quite a lot about your detector. But experience is the best teacher. I recommend that you get out and practice with your detector as much as possible. Any time spent using your detector will give you valuable experience.

 


OPERATING TECHNIQUES – FIELD USE
Pinpointing a Target

When pinpointing a target, the ALL METAL Mode can offer advantages over the DISCRIMINATE Mode, such as no false signals and no need to move the searchcoil to get a target response.

A good method for pinpointing in ALL METAL Mode is “X-ing” the target with the searchcoil. Remember that the target’s response sound is always greatest when the target is directly under the center of the searchcoil. To “X” a target, sweep the searchcoil over the target from side to side and then from front to back until you can identify the center of the X—the spot on the ground where the target response sound is the greatest.

Pinpointing a target in DISCRIMINATE Mode is probably best done by “X-ing” as well. Remember that the detector will beep just as the target passes under the center of the searchcoil. Slowing the sweep speed down will help you pick out the center of the X because the target response is reduced at very slow speeds making it easier to correlate the sound with the coil center.

Another easy method is to sweep the coil from side to side across the target in very short sweeps as you slowly move forward and backward across the target. Slow down the sweep rate and shorten the sweeps until you just barely get a response at one spot. The target will be directly below the coil center at this response time.

Another method of pinpointing in the DISCRIMINATE Mode is to quickly change to the ALL METAL Mode to check the target response. Remember that the ALL METAL Mode is not susceptible to the false signals of the DISCRIMINATE Mode and can sometimes give a clearer and more consistent response to difficult targets such as a dime buried next to a pulltab. By switching back and forth between modes and comparing the target response sound in all metal to the target response sound in discriminate, you can often better identify the likely location of the target.

Finally, raising the searchcoil during pinpointing can also help by narrowing the response to the target. Practice pinpointing often, and you will soon become more accurate and faster.

Recognizing False Signals in Discriminate Mode

When operating in the DISCRIMINATE Mode, some “false signals” may be caused by 1) heavy concentrations of trash metal objects, 2) very large trash metal objects, or 3) electrical interference. These signals are generally short, choppy sounds and sound different than “good signals” (good target response sounds).

At the end of your sweep, as you reverse the coil direction, the detector is most susceptible to trash-induced noise. There are two ways to tell whether these sounds are good deep signals or trash “noise.” The first is by repeatability. Trash-induced noises will not be regular as you sweep the coil over the suspected target several times, whereas a good target response will be repeatable. The second method is to switch to the ALL METAL Mode and check the target response sound. If the response is weak, it may well be a deep, good target. But if the response is very strong, it is probably trash. Note that a coin close to the surface can give a double beep sound, but it is regular and repeatable. Raising the coil an inch or two will restore the single beep on surface targets.

When searching in the DISCRIMINATE Mode, it is best not to use a higher DISCRIMINATE LEVEL setting than necessary. Nickels and most smaller rings are rejected when the DISCRIMINATE LEVEL is set to reject pulltabs on any metal detector that is a TR Discriminator like the Cibola. If you don’t dig any junk at all, you are surely passing up a lot of good finds as well. Set the DISCRIMINATE LEVEL only high enough to suit the conditions where you are searching. If there is any doubt whether a target is good or not, dig it.

Recovering a Target

If the target is shallow and the soil is soft, you may be able to “probe” and find the exact location of the target before you dig it. Since filling all holes after you recover the target is so important, digging a small precise hole is best. If the target is deep, you may need to dig a larger hole. As you dig, occasionally check the hole with your detector to see if you have moved the object, can probe it, or have already dug it. Be sure to fill all holes after you recover the target. Two methods are shown on the next two pages that work most everywhere. Be sure to protect your hobby by leaving the site cleaner than you found it and with all holes filled!

GENERAL INFORMATION – CARE AND USE
Basic Care

The Cibola is a sturdy instrument, but it is not designed to withstand abuse. In caring for your Cibola, there are several important “DO NOTs” to remember. DO NOT use it to pry rocks loose or to beat bushes out of the way. DO NOT drop the machine into water. DO NOT use it unprotected in the rain. DO NOT leave it exposed at night where dew could form on it. DO NOT store it in places that could get extremely hot (next to a woodstove or in an attic). DO NOT leave it in the trunk of a car or in the back of a hatchback-style car where high temperatures could build up. DO NOT store it with the battery installed as batteries may leak. DO NOT spray lubricants such as WD-40, or any types of cleaners, solvents, sealants or other chemicals into or onto the electronic parts, witches, or controls. And finally, DO NOT attempt to modify or repair the detector’s electronics as this will void your detector’s warranty.

THE WARRANTY DOES NOT COVER DAMAGE RESULTING FROM AN ACCIDENT, NEGLECT OR ABUSE.

Protecting Your Investment

Often detectorists are disappointed when their new detector slowly becomes less and less responsive and seems to have lost some of its original peak performance. You can help avoid this from happening to your detector by following these basic care and protection guidelines:

  • Operate your detector exactly as recommended in this Operator Instruction Manual.
  • Use only high-quality alkaline batteries of the correct voltage. Never substitute a different voltage. When using a Ni-Cad battery, always use a separate convertible pack with the proper voltage output for the detector’s design.
  • Remove the battery from the detector after each use. This will prevent damage to the detector if the battery leaks.
  • The searchcoil cable is hard-wired to the searchcoil and protected by a strain relief. Inspect the strain relief frequently to make sure it is firmly attached and intact.
  • Keep cables properly wound around the pole stems and protect them during use. Floppy, pinched, or cables that become snagged during use may short, causing erratic noises or unnecessary replacement of the searchcoil.
  • Sweep the searchcoil carefully, especially when using around rocks and building foundations. Avoid hitting the searchcoil against hard, solid objects and surfaces.
  • Keep your searchcoil slightly off of the ground during the sweep, especially when using in gravel or hard, rocky dirt.
  • Always use a properly designed protective scuff cover on the searchcoil. (See “Optional Accessories” in the next section.)
  • Remove and clean out scuff covers periodically to avoid buildup of mineralized dirt particles which will affect performance.
  • The searchcoil is waterproof and can be submerged in either fresh or salt water. After the searchcoil is used in salt water, rinse it and the lower stem assembly well with fresh water to prevent corrosion of the metal parts.
  • The searchcoil is waterproof but the electronics are not, so always prevent any moisture or water from entering the control housing and never allow the cable connectors to become submerged in water.
  • If working in or near water, or if there is a possibility of rain, use a protective weather resistant pouch or plastic bag to cover the control housing. Make sure it can “breathe” in order to ensure against condensation buildup inside.
  • After each use, clean the detector with a soft cloth to remove dust, moisture, or other contaminants.
  • When transporting the detector in a car during hot weather, store it on the floor of the passenger compartment if possible. Using a carry bag gives additional protection. In any case, never allow the detector to roll around unprotected in the trunk or back of a pickup truck.
  • Protect your detector from dust, moisture, and extreme temperatures during storage.
  • When shipping, use the original factory carton or similar heavy-duty container and provide a minimum one inch of padding around all parts.
  • Treat your detector as you would any sensitive electronic instrument. Though ruggedly constructed and designed to withstand the demands of normal treasure hunting, proper care is essential.

 


OPTIONAL ACCESSORIES

Tesoro metal detectors and genuine Tesoro accessories are sold only through independent Tesoro Authorized Dealers, who are almost always metal detectorists themselves. They can answer your questions about your Tesoro detector, what accessories may be helpful, and about metal detecting in general.

See your Tesoro Authorized Dealer for more information and prices on optional accessories.

Searchcoils

The 9 x 8 monolithic searchcoil provided with the Cibola is designed for best all-around performance. Optional searchcoils may add to your detector’s performance.

Smaller searchcoils give better “target separation”—that is, more distinct target response for metal objects buried closely together—which is very useful when hunting trashy sites. Very small searchcoils can deliver the best response and depth to small targets such as fine gold chains with some sacrifice in depth on larger objects. Larger searchcoils give a wider sweep, cover more ground, and provide greater depth especially on larger objects; however, they may not detect some very small objects such as half dimes and will have difficulty in very trashy areas.

Widescan searchcoils ignore ground mineralization better than concentric searchcoils and may offer improved performance in extreme ground conditions.

Selecting the right optional searchcoil depends on factors such as what you are searching for and search site conditions. No one searchcoil is better than all the rest. Several optional interchangeable searchcoils are available for the Cibola. They are all easy to mount and require no special tools. See the coils section for a list of these searchcoils with the Tesoro part # and description.

Optional scuff covers are also available for any Tesoro searchcoil.

Headphones

Most metal detectorists prefer to use headphones instead of the detector’s built-in speaker. Headphones help block out background noise (such as wind) and make it easier to hear faint signals. Headphones with a built-in volume control will allow you to adjust the sound volume to your preference.

 


SPECIFICATIONS
Operating Frequency 14.3 kHz, 14.5 kHz, 14.7 kHz
Searchcoil Type Monolithic (Carbon Fiber)
Searchcoil Size 9 x 8
Searchcoil Family Delta
Cable Length Approx. 3’
Audio Frequency Approx. 293 Hz or VCO
Audio Output 1½” speaker and headphone jack
Headphone Compatibility ¼” stereo plug
Weight (may vary slightly) 2.2 lbs.
Battery Requirement One 9 volt DC (alkaline)
Battery Life (typical) 10 to 20 hours
Optimum Temperature Range 30° to 100° F
Optimum Humidity 0 to 75% R.H.
Operating Modes Pinpoint All Metal
Silent Search Discriminate

 


Metal Detectorist’s Code of Ethics
  1. Always check federal, state, county and local laws before searching. It is your responsibility to “know the law.”
  2. Abide by all laws, ordinances or regulations that may govern your search and the area you will be in.
  3. Never trespass. Always obtain permission prior to entering private property, mineral claims, or underwater salvage leases.
  4. Do not damage, deface, destroy, or vandalize any property, including ghost towns and deserted structures, and never tamper with any equipment at the site.
  5. Never litter. Always pack out what you take in and remove all trash dug in your search.
  6. Fill all holes, regardless how remote the location. Never dig in a way that will damage, be damaging to, or kill any vegetation.
  7. Do not build fires, camp at or park in non-designated or restricted areas.
  8. Leave all gates and other accesses to land as found.
  9. Never contaminate wells, creeks, or any other water supplies.
  10. Be courteous, considerate, and thoughtful at all times.
  11. Report the discovery of any items of historic significance to the local historical society or proper authorities.
  12. Uphold all finders, search and salvage agreements.
  13. Promote responsible historical research and artifact recovery and the sharing of knowledge with others.

WARRANTY SERVICE

Your Tesoro metal detector is covered by a Limited Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

LIMITED LIFETIME WARRANTY

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.

TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party.

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001 Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.

 

TESORO Tejon METAL DETECTOR OPERATOR INSTRUCTION MANUAL

TESORO TEJÓN METAL DETECTOR OPERATOR INSTRUCTION MANUAL
 


 

CONGRATULATIONS!

Your new Tesoro Tejón metal detector is part of a new series of detectors designed to provide you with many happy hours of enjoyment in the most rewarding hobby I can think of—treasure hunting. Ahead of you lie fascinating and exciting experiences as you step into the past—uncovering artifacts lost by past generations, or as you take pleasure in the great outdoors with family and friends searching for precious metals. I wish we could share these experiences with you, and all of us at Tesoro wish you the best of success.

Your Tesoro detector is capable of meeting your needs in a wide range of treasure hunting situations. As with any other metal detector, familiarity with this instrument is probably the limiting factor in determining how successful you can be. I recommend that you read this manual and fully understand how to operate this detector before attempting to use it in the field. As you become more familiar with your detector through practice, your rate of success will increase dramatically.

The Tejón is a precision electronic instrument that will last for years if properly cared for. Treat it right and it won’t let you down.

 

 

 


GETTING STARTED – UNPACKING THE BOX

Your Tejón was shipped with these parts:

1 Upper Pole Assembly

Fully assembled, including upper pole stem with handle grip, padded arm bracket and control housing.

1 Middle Pole Assembly With Pole Lock

1 ABS Lower Pole Assembly

Fully assembled, complete with two friction washers, mounting screw, and thumb nut.

1 9 x 8 Monolithic Searchcoil With 42” Cable and Scuff Cover

2 Battery Packs, Each With 4 AA Batteries

1 Operator Instruction Manual

1 Warranty Card

If any of these items are missing, contact the Tesoro Authorized Dealer where you purchased your detector immediately.

Assembling the Tejón is simple and requires no special tools. Just install the battery packs, mount the searchcoil on the lower pole assembly, connect the pole assemblies together, wrap the excess cable around the pole, and plug the cable into the control housing. Finally, adjust the pole length and searchcoil angle and you’re ready!


INSTALLING THE BATTERY

The Tejón is powered by 8 AA batteries divided into 2 compartments, which are located in the armrest housing.

Open the battery compartment under the armrest by gently grasping the bottom edge of the door and pulling outward and upward. (The door is hinged at the top.)

Remove the batteries by pressing down on the right side of the 4-pack battery holder so that the left side of the holder will pop up. Pull out the holder and replace the batteries as needed.

When returning the holder, note the position of the spring clips inside the armrest housing and make sure that the battery pack contacts fit snugly against the springs. Insert the side with the contacts first and then press down on the left edge of the battery holder to reseat the holder.

Snap compartment cover to close.


ASSEMBLING YOUR DETECTOR
    1. On the lower pole assembly, remove the mounting screw and thumb nut from the pole tip.
    2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and washers with those of the mounting ears.
      Note: The pole tip should fit very snugly into the mounting ears.

 

    1. Insert the mounting screw through the holes in the mounting ears and pole tip—entering from the side opposite the cable connection.
    2. Install the thumb nut on the mounting screw and tighten by hand.
      Note: Do not overtighten the thumb nut. It should be snug but not too difficult to loosen up.
    3. On the middle pole assembly, depress the two spring buttons and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes, locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together.

 

  1. Slide the lower pole into the middle pole until the spring buttons click into the first set of adjustment holes. Turn pole lock to tighten the assemblies into place.
  2. Wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment. Note: Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.
  3. Plug the male cable end into the female connector on the control housing and tighten the cable thumb nut. You are finished!
    Note: You will want to adjust the pole length and the searchcoil angle to your preference.


ADJUSTING THE POLE & SEARCHCOIL

The pole length should be adjusted so that the detector does not become uncomfortable or tiring after long periods of use. The detector grip should rest in your hand with your arm relaxed, your elbow straight but not locked, with the pole extending out in front of you at the approximate angle shown in the photo.

You should be able to swing the detector back and forth in front of you—using relaxed shoulder movement—while keeping the searchcoil as close to the ground as possible. This swinging movement is often called a “sweep.”

The searchcoil should not touch the ground during your sweep. The pole length should be adjusted to allow this without having to lift the detector with your elbow or shoulder. The searchcoil should rest about one inch above the ground while you are standing erect. The angle of the searchcoil should allow the bottom to be parallel to the ground.

The pole length is adjusted by loosening the pole lock, then depressing the spring buttons and extending or shortening the pole until the spring buttons click into the set of holes that give you the most comfortable pole length.

To adjust the searchcoil angle, simply loosen the searchcoil thumb nut slightly and move the searchcoil into the desired position. Tighten the searchcoil thumb nut by hand so that the searchcoil will hold in place.

 


QUICKSTART – SELF-GUIDED TUTORIAL

The Quickstart is designed to teach you how to use your new Tejón. It provides a quick and easy means of learning your detector and the concepts behind all of the functions.

You will need the following items:

  1. Your fully assembled Tejón
  2. AAn iron target (a small nail or screw will do), a nickel, a zinc penny (1982 or later), a quarter, and a couple of different pulltabs
  3. A nonmetal table top or counter.

Here’s what you will do:

  1. Prepare for the Quickstart
  2. Perform Audio Battery Test
  3. Adjust THRESHOLD
  4. Adjust Ground Balance for Air Test
  5. Perform Air Test in All Metal Mode
  6. Adjust TONE Control for All Metal Mode
  7. Adjust TONE Control for Disc Mode
  8. Adjust SENSITIVITY
  9. Perform Air Test in Disc Mode
  10. Activate TRIGGER SWITCH Mode
  11. Perform Air Test in ALT DISC LEVEL Mode
  12. Perform Air Test in Pinpoint Mode
Prepare for the Quickstart

Place your assembled Tejón on the nonmetal surface. Make sure that there are no metal objects near the coil and remove any jewelry from your hands and wrists.

Start with the controls like this:

  1. SENSITIVITY, DISC LEVEL and TONE turned completely counterclockwise past the click.
  2. THRESHOLD and ALT DISC LEVEL turned completely counterclockwise.
  3. GROUND ADJUST turned to the 12 o’clock position.
  4. TRIGGER SWITCH Mode in the center position (underneath housing).
Perform Audio Battery Test

Turn the SENSITIVITY knob clockwise just past the click to about 3 or 4. You should hear 6 to 7 quick beeps. This indicates that your batteries are fully charged and ready to go. As the batteries drain, you will hear fewer beeps. When you only hear 1 or 2 beeps, it will be time to replace your batteries. This test should be performed once or twice during your detecting outing. This will ensure that your machine has the correct battery power to maintain optimum detector performance.

Adjust THRESHOLD

To adjust the threshold tone, turn the THRESHOLD knob clockwise until you hear a slight but steady tone. You may have to turn the knob to somewhere between the 1 o’clock and 3 o’clock position to get the best hum. Please remember that the threshold only affects the all metal mode.

The purpose of the threshold tone is to give a reference to judge targets for pinpointing and to adjust the ground balance. (For more information on ground balancing, see the “Adjust Ground Balance for Air Test” section on the next page and the “Ground Balancing in the Field” section.)

In the field, some targets may be small enough or deep enough that they will not be able to generate an audio signal by themselves. By monitoring a threshold tone, you already have a slight audio tone so changes are easier to hear. However, if your threshold tone is set too soft or too loud, small changes in the signal will be hard to hear. Take some time and find a threshold level that is right for you.

Adjust THRESHOLD

The ground balance function for your Tejón is a form of discrimination that allows you to tune out the mineralization in the ground that may mask targets or decrease the detector’s depth and sensitivity. The GROUND ADJUST knob is on a 3 and ¾-turn potentiometer. While the knob will turn endlessly in either direction, when the potentiometer is at the end of its range, a slight drag may be felt.

Note: The following procedure is for the air test only. For directions on ground balancing your Tejón in the field, see the “Ground Balancing in the Field” section on page 16. For the best performance of your Tejón in the field, the machine must be ground balanced to the location in which you will be working.

To set the GROUND ADJUST knob for the air test, turn the knob four turns clockwise and then turn the knob one half turn counterclockwise. No further turns will be needed for the air test.

Perform Air Test in All Metal Mode

Once you have set the correct threshold tone and adjusted the ground balance, you are ready to perform the air test in the all metal mode. Your Tejón is currently in the VCO-style of all metal mode. You will find that as targets get closer to the coil, the threshold tone will get louder and higher in pitch.

Try waving your targets in front of the coil. Start from a distance of 10 to 12 inches away from the coil and slowly work your way closer to the coil. Then try starting from 6 inches from the left or right of the coil and work your way into the center of the coil. Notice the changes of the audio signal. Your strongest signal will always be closest to the center of the coil. Additional target information can also be learned by the signal strength and pitch. A smaller or deeper target will give a less noticeable change in the threshold tone than a larger or shallower target will give. Take some time and try all of your targets at different depths to find out how your detector sounds.

Adjust Ground Balance for Air Test

The ground balance function for your Tejón is a form of discrimination that allows you to tune out the mineralization in the ground that may mask targets or decrease the detector’s depth and sensitivity. The GROUND ADJUST knob is on a 3 and ¾-turn potentiometer. While the knob will turn endlessly in either direction, when the potentiometer is at the end of its range, a slight drag may be felt.

Note: The following procedure is for the air test only. For directions on ground balancing your Tejón in the field, see the “Ground Balancing in the Field” section on page 16. For the best performance of your Tejón in the field, the machine must be ground balanced to the location in which you will be working.

To set the GROUND ADJUST knob for the air test, turn the knob four turns clockwise and then turn the knob one half turn counterclockwise. No further turns will be needed for the air test.

Perform Air Test in All Metal Mode

Once you have set the correct threshold tone and adjusted the ground balance, you are ready to perform the air test in the all metal mode. Your Tejón is currently in the VCO-style of all metal mode. You will find that as targets get closer to the coil, the threshold tone will get louder and higher in pitch.

Try waving your targets in front of the coil. Start from a distance of 10 to 12 inches away from the coil and slowly work your way closer to the coil. Then try starting from 6 inches from the left or right of the coil and work your way into the center of the coil. Notice the changes of the audio signal. Your strongest signal will always be closest to the center of the coil. Additional target information can also be learned by the signal strength and pitch. A smaller or deeper target will give a less noticeable change in the threshold tone than a larger or shallower target will give. Take some time and try all of your targets at different depths to find out how your detector sounds.

Adjust TONE Control for All Metal Mode

The Tejón has the ability to adjust the pitch of the all metal and discriminate audio signals to suit your audio tone preferences. Turn the TONE knob clockwise just past the click. Your Tejón will no longer operate in the VCO mode. The all metal will now only respond with a single tone for threshold tone and any target. Wave a target in front of the coil and notice the pitch of the audio tone. Continue waving the target as you slowly turn the TONE knob. You will find that the farther the TONE knob is turned clockwise, the higher in pitch the audio tone becomes. Take some time to try different tone settings.

Adjust TONE Control for Disc Mode

To adjust the tone for the discriminate mode, turn the DISC LEVEL knob clockwise just past the click. You are now in the discriminate mode. The first thing that you will notice is that the threshold has gone away. The Tejón works in a silent search discriminate mode. You will only hear a signal when there is a target beneath the coil. The TONE knob works the same way in discriminate as it does in the all metal mode. You may want to switch back and forth between the discriminate and all metal modes. You will notice that once the pitch has been set with the TONE knob, it remains the same in both modes. If you set the TONE knob back into the VCO setting, the discriminate will operate on a preset audio 10 TEJÓN OPERATOR INSTRUCTION MANUAL pitch. Take some time to try your targets with various settings and find the tone setting that is most comfortable for you.

Adjust SENSITIVITY

The most common use of the detector is to hunt in the disc mode and switch to the all metal to pinpoint a target. This will give you the advantage of ignoring unwanted targets and not having to listen to the threshold hum until you are ready to pinpoint and dig a target.

The all metal circuit uses a single channel to detect various metals. The discriminate circuit uses two different channels, then amplifies and filters them. The detector will then compare the signals and determine whether or not to beep at the target. While there is a great advantage to ignoring unwanted targets, it can make the circuitry more susceptible to interference. A number of outside conditions such as power lines, highly mineralized soil, and wet salt sand can cause interference.

The SENSITIVITY knob is used to raise or lower the power to the operational amplifiers, which changes the gain. Gain is a measurement of how much a signal is amplified. The higher the gain the more depth and sensitivity to small objects a detector has. Unfortunately, any small interference that is amplified can cause the detector to become erratic. The SENSITIVITY control is used to find the best gain setting in any location without letting the detector become unstable.

The SENSITIVITY knob is numbered from 1 to 10 with an orange area called the Max Boost Zone. For normal hunting, anywhere in the numbered zone will work very well. However, the Max Boost will allow you to increase the power to the operational amplifiers to the point of overload. This may cause your detector to become unstable and force you to turn the SENSITIVITY knob to a lower setting. An overload situation will not hurt your detector, but it will maximize the gain that is used by your detector. This can, in certain conditions such as low mineralization in the soil, cause your detector to penetrate deeper into the ground and become more sensitive to small targets.

Take some time to wave targets in front of the coil with different sensitivity settings. If you are indoors, you may find that you are unable to turn the SENSITIVITY knob as high as you would if you were outdoors. Notice that the higher the sensitivity setting, the farther away from the coil that a target can be and still respond with an audio signal.

Perform Air Test in Disc Mode

As discussed before, the discriminate mode is used to filter unwanted targets from good targets. The principle behind this is pretty simple. The detector sends out a signal and then receives it back creating a small electronic field. As metal passes through the field that the detector generates, it causes a change in the received signal. The amount of change that each type of metal causes is fairly constant; therefore, we can tune our detectors to miss targets that we don’t want to find. The change is based on the amount of conductivity of each target type. The general list of conductive targets is as follows: iron, foil, nickels, gold jewelry, pulltabs, screw tabs, pennies, and silver coins starting with dimes and working up to silver dollars. This list is meant to be a guide only. There is a point that some pulltabs, nickels, and gold jewelry overlap. Also, the depth of the target and its orientation in the ground can change the received signal. A coin that is flat to the coil will produce a better signal than a coin that is on edge. Take some time to try different combinations of depths and orientations of your targets to find out how your detector responds.

We are now ready to discriminate targets from each other. We will start with the DISC LEVEL at ALL METAL. Please notice that the DISC LEVEL knob has words that correspond to the items that are discriminated out. All of your targets will respond with a good audio signal at the ALL METAL setting. Next, we will turn the DISC LEVEL up to the 5¢ setting. This level is typically high enough to knock out the nickel. At this time, the iron target and the nickel should give no response, while most of the pulltabs, the zinc penny, and the quarter will give a solid response. Next, turn the DISC LEVEL knob just past the TAB marking. At this time, most or all of the pulltabs should not give any audio signal. The zinc penny and the quarter should give a strong signal. Now, roll the DISC LEVEL all the way to SCAP. Notice that the penny has stopped responding and only the quarter is still responding. The discrimination will not go high enough to lose most of the silver coins. When you are done with your air test, turn the DISC LEVEL knob counterclockwise to the IRON position.

This air test is designed to quickly show you how your discriminate mode works. Each machine may be a little different from all of the others, so you may want to take some time and try different targets to find responses of your machine. At a later date, you may want to build a test garden to test your detector in the field.

Activate TRIGGER SWITCH Mode

Your Tejón uses a TRIGGER SWITCH to change the operating mode. The TRIGGER SWITCH is a three-position switch that is springloaded on both ends and will always return to the center position when released (switch is located underneath housing).

The center position is the regular discriminate and is controlled by the lower discriminate knob marked DISC LEVEL. The knob is used to set the amount of discrimination that you would like to hunt with or to place the Tejón in a slow retune all metal mode.

Pulling the TRIGGER SWITCH toward the handle will place your Tejón into the pinpointing mode. This is a fast retune all metal mode. While the switch is pulled, you will hear a threshold tone.

Pushing the TRIGGER SWITCH forward away from the handle will place your Tejón into the alternate discriminate mode. The upper discriminate knob marked ALT DISC LEVEL controls this mode.

Flip the TRIGGER SWITCH back and forth and let it return to the center position.

Perform Air Test in ALT DISC LEVEL Mode

Leave the TRIGGER SWITCH in the center position and check all of your targets. The iron target should be knocked out, but all other targets should generate an audio response. If you are getting a target response from the iron, turn the DISC LEVEL knob high enough to discriminate it out.

Push the TRIGGER SWITCH forward and check the iron target again. At this time, you should get a target response. Take a moment or two flipping from the DISC LEVEL to the ALT DISC LEVEL using only the iron target. Notice how easy it is to discriminate out the target.

Set the ALT DISC LEVEL to the SCAP (screw cap) position. Leave the TRIGGER SWITCH in the center position. Check all of your targets. They should all sound off except the iron target. Push the TRIGGER SWITCH forward and check the targets again. The only target response should be from the quarter. With this particular DISC/ALT DISC setting, you will hunt for targets in the regular discriminate and check any targets that you find to see if they are silver coins or jewelry using the ALT DISC LEVEL mode.

Take some time to try other combinations of DISC LEVEL and ALT DISC LEVEL settings to find the ones that match your detecting style.

Perform Air Test in ALT DISC LEVEL Mode

Turn the DISC LEVEL knob all the way counterclockwise until it clicks. This will put you into the slow retune all metal mode. Hold a target over the center of the coil. After eight to ten seconds, the target signal will fade to the normal threshold signal. Move the target very slightly from left to right and forward and backward. As you move the target away from the center of the coil, the signal will fade into silence. Bringing the target back over the coil will result in a target signal. Take some time to find the strongest all metal signal over your coil.

Hold your target over the center of the coil and pull the TRIGGER SWITCH toward the handle of your Tejón. This will put you into the fast retune all metal or pinpointing mode. You will notice that the threshold hum will fade down to normal within three to four seconds. Move your target from right to left and forward and backward. Due to the fast retune, you will be able to move your target in shorter, faster arcs for fast pinpointing. When in the field, pulling the TRIGGER SWITCH into the pinpointing mode will allow you to tighten your coil sweeps to just a few inches and quickly pinpoint your target. Take some time to try the slow vs. fast retune features for the all metal mode.

Conclusion

Congratulations, you have just finished the Quickstart for your new Tejón detector and in the process have learned quite a lot about your detector. But experience is the best teacher. I recommend that you get out and practice with your detector as much as possible. Any time spent using your detector will give you valuable experience.

 


OPERATING TECHNIQUES
Ground Balancing in the Field

Ground balancing is not a difficult procedure, but it is critical if you desire maximum depth and stability. It is especially important if you plan to find deep relics or prospect for gold nuggets.

To ground balance in the field, we will start by assuming your detector is turned off. This will be the normal condition of your detector when you start hunting. Ground balancing can be done at any time while you are using the detector. It is not necessary to turn the machine off each time that you ground balance.

Start with the controls in the following positions:

  1. SENSITIVITY on OFF.
  2. Mode in the ALL METAL position. Your Tejón can be set into ALL METAL by turning the DISC LEVEL knob counterclockwise until it clicks and leaving the TRIGGER SWITCH in the center position or by simply pulling the TRIGGER SWITCH back toward the handle and holding it in place.
  3. All other controls will be set during the ground balancing procedure or are not applicable at this time.

Turn the detector on by rolling the SENSITIVITY knob clockwise to about 9 or 10 on the dial. You will hear the battery test to let you know the detector is operating. Next, adjust the THRESHOLD knob until a slight, steady hum is heard. The machine is now ready to be ground balanced. Next, find an area that has no metal targets in the ground, as this may give false readings while in the ground balancing procedure.

As shown in the photos, raise your searchcoil about 6 to 8 inches off the ground. This is high enough so that the detector will no longer read the minerals in the ground. While listening to the threshold sound, lower the searchcoil to about 1 inch off the ground. As the coil is dropped. This is the balanced response. When you get a balanced response, the detector is telling you that it is ready to hunt.

The positive and negative responses are easy to adjust. If you get a positive response, turn the GROUND ADJUST knob toward the minus sign on the face or in a counterclockwise direction. Getting a negative response means turning the GROUND ADJUST knob toward the plus sign on the faceplate or in a clockwise direction.

Here is an example of balancing: After setting up the detector, you raise the coil and then push it to the ground. As the coil drops, the threshold hum gets louder. You then turn the GROUND ADJUST knob counterclockwise toward the minus sign. You pick up the coil and push down again. This time you get a slightly negative response. Turn the GROUND ADJUST knob a little bit toward the positive or in a clockwise direction. When raising and lowering the coil, the threshold makes no change as the coil is dropped. At this point, the detector is balanced for the area and is ready to hunt.

Ground balancing is a learned skill, one that you should practice often. It is easy to practice almost anywhere— your front or backyard, a local park, or a fair-sized flower garden. When you are practicing, make sure that there are no pieces of metal underneath your coil that may cause a target sound.

NOTE: Please remember that the coil must be lifted straight off the ground. Swinging the coil in an arc, like a pendulum, will cause false readings and will result in an improper ground balance.

Handling Your Detector

The detector should be held in a position that is comfortable for you as shown in the “Adjusting The Pole & Searchcoil” section in GETTING STARTED. Swing the detector from side to side in about a three foot arc, overlapping succeeding strokes well. This motion is called a “sweep.” The Tejón is designed to get maximum depth without the frantic pace required of earlier motion detectors, so go at a pace that is comfortable for you. In fact, trying to hunt too fast may even cause a loss of depth in heavily mineralized locations.

Regardless of which mode you are using, try to keep your searchcoil height constant and close to the ground. Most people tend to raise the coil at the end of a sweep—much like a pendulum—especially if they are in a hurry. Try to avoid this as any increase in height from the ground will cause a corresponding loss of depth.

In areas with well-kept lawns, the easiest way to maintain a constant searchcoil height is to allow the coil to rest on the grass as you sweep from side to side. In rough and rocky areas, it is best not to “scrub” the coil on the ground, as the rocks will act like abrasives and wear away the coil bottom (a coil scuff cover will protect against this). Sweep the coil as close to the ground as possible without touching. Hitting the ground or rocks may cause a false signal. Sweeping the coil too high above the ground results in a loss of depth.

Pinpointing a Target

When pinpointing a target, the all metal mode can offer advantages over the discriminate mode, such as no false signals and no need to move the searchcoil to get a target response.

Agood method for pinpointing in the all metal mode is “X-ing” the target with the searchcoil. Remember that the target’s response sound is always greatest when the target is directly under the center of the searchcoil. To “X” a target, sweep the searchcoil over the target from side to side and then from front to back until you can identify the center of the X—the spot on the ground where the target response sound is the greatest.

Pinpointing a target in the discriminate mode is probably best done by “X-ing” as well. Remember that the detector will beep just as the target passes under the center of the searchcoil. Slowing the sweep speed down will help you pick out the center of the X because the target response is reduced at very slow speeds making it easier to correlate the sound with the coil center.

Another easy method is to sweep the coil from side to side across the target in very short sweeps as you slowly move forward and backward across the target. Slow down the sweep rate and shorten the sweeps until you just barely get a response at one spot. The target will be directly below the coil center at this response time.

Another method of pinpointing in the discriminate mode is to quickly change to the all metal mode to check the target response. Remember that the all metal mode is not susceptible to the false signals of the discriminate mode and can sometimes give a clearer and more consistent response to difficult targets such as a dime buried next to a pulltab. By switching back and forth between modes and comparing the target response sound in all metal to the target response sound in discriminate, you can often better identify the likely location of the target.

Finally, raising the searchcoil during pinpointing can also help by narrowing the response to the target. Practice pinpointing often, and you will soon become more accurate and faster.

Planting a Test Garden

To better learn how your detector performs in the field, it is helpful to bury some coins and trash metal junk items in an area that you know is clear of other metal objects, and then try the Tejón in the all metal & discriminate modes. Check the area in the all metal mode to be sure it’s clear of trash. Then bury the targets at least 1 foot apart and from 2 to 4 inches deep to start. Make a map of the area to be sure you know what each target is and how deep it is. Practice on these targets to familiarize yourself with your detector’s target response. This will also help you learn the proper sweep speed for best operation. This type of practice area is often called a “test garden” or “test bed” and is one of the best tools to help you develop your metal detecting skills.

CARE AND USE
Basic Care

The Tejón is a sturdy instrument, but it is not designed to withstand abuse. In caring for your Tejón, there are several important “DO NOTs” to remember. DO NOT use it to pry rocks loose or to beat bushes out of the way. DO NOT drop the machine into water. DO NOT use it unprotected in the rain. DO NOT leave it exposed at night where dew can form on it. DO NOT store it in places that can get extremely hot (next to a woodstove, in an attic). DO NOT leave it in the trunk of a car or in the back of a hatchback- style car where high temperatures can build up. DO NOT store it with the batteries installed as batteries may leak. DO NOT spray lubricants such as WD-40, or any type of cleaners, solvents, sealants or other chemicals into or onto the electronic parts, switches, or controls. And finally, DO NOT attempt to modify or repair the detector’s electronics as this will void your detector’s warranty.

THE WARRANTY DOES NOT COVER DAMAGE RESULTING FROM AN ACCIDENT, NEGLECT OR ABUSE.

Protecting Your Investment

Often detectorists are disappointed when their new detector slowly becomes less and less responsive and seems to have lost some of its original peak performance. You can help avoid this from happening to your detector by following these basic care and protection guidelines:

  • Operate your detector exactly as recommended in this Operator Instruction Manual.
  • Use only high-quality alkaline batteries of the correct voltage. Never substitute a different voltage. When using a Ni-Cad battery, always use a separate convertible pack with the proper voltage output for the detector’s design.
  • Remove the battery from the detector after each use. This will prevent damage to the detector if the battery leaks.
  • The searchcoil cable is hard-wired to the searchcoil and protected by a strain relief. Inspect the strain relief frequently to make sure it is firmly attached and intact.
  • Keep cables properly wound around the pole stems and protect them during use. Floppy, pinched, or cables that become snagged during use may short, causing erratic noises or unnecessary replacement of the searchcoil.
  • Sweep the searchcoil carefully, especially when using around rocks and building foundations. Avoid hitting the searchcoil against hard, solid objects and surfaces.
  • Keep your searchcoil slightly off of the ground during the sweep, especially when using in gravel or hard, rocky dirt.
  • Always use a properly designed protective scuff cover on the searchcoil. (See “Optional Accessories” in the next section.)
  • Remove and clean out scuff covers periodically to avoid buildup of mineralized dirt particles which will affect performance.
  • The searchcoil is waterproof and can be submerged in either fresh or salt water. After the searchcoil is used in salt water, rinse it and the lower stem assembly well with fresh water to prevent corrosion of the metal parts.
  • The searchcoil is waterproof but the electronics are not, so always prevent any moisture or water from entering the control housing and never allow the cable connectors to become submerged in water.
  • If working in or near water, or if there is a possibility of rain, use a protective weather resistant pouch or plastic bag to cover the control housing. Make sure it can “breathe” in order to ensure against condensation buildup inside.
  • After each use, clean the detector with a soft cloth to remove dust, moisture, or other contaminants.
  • When transporting the detector in a car during hot weather, store it on the floor of the passenger compartment if possible. Using a carry bag gives additional protection. In any case, never allow the detector to roll around unprotected in the trunk or back of a pickup truck.
  • Protect your detector from dust, moisture, and extreme temperatures during storage.
  • When shipping, use the original factory carton or similar heavy-duty container and provide a minimum one inch of padding around all parts.
  • Treat your detector as you would any sensitive electronic instrument. Though ruggedly constructed and designed to withstand the demands of normal treasure hunting, proper care is essential.

 


OPTIONAL ACCESSORIES

Tesoro metal detectors and genuine Tesoro accessories are sold only through independent Tesoro Authorized Dealers, who are almost always metal detectorists themselves. They can answer your questions about your Tesoro detector, what accessories may be helpful, and about metal detecting in general.

See your Tesoro Authorized Dealer for more information and prices on optional accessories.

Scuff Covers

We highly recommend using a scuff cover to protect your searchcoil at all times. The scuff cover for the Tejón, fitted with the 9 x 8 monolithic searchcoil, is Tesoro part # SCUF-9×8.

Searchcoils

The 9 x 8 monolithic searchcoil provided with the Tejón is designed for the best all-around performance. Optional searchcoils may add to your detector’s performance.

Smaller searchcoils give better “target separation”—that is, more distinct target response for metal objects buried closely together—which is very useful when hunting trashy sites. Very small searchcoils can deliver the best response and depth to small targets such as fine gold chains with some sacrifice in depth on larger objects. Larger searchcoils give a wider sweep, covering more ground, and provide greater depth especially on larger objects; however, they may not detect some very small objects such as half dimes and will have difficulty in very trashy areas.

Widescan searchcoils ignore ground mineralization better than concentric searchcoils and may offer improved performance in extreme ground conditions.

Optional scuff covers are also available for any Tesoro searchcoil.

Headphones

Most metal detectorists prefer to use headphones instead of the detector’s built-in speaker. Headphones help block out background noise (such as wind) and make it easier to hear faint signals. Headphones with a builtin volume control will allow you to adjust the sound volume to your preference.

 


SPECIFICATIONS
Operating Frequency 17.2 to 17.6 kHz
Searchcoil Type Monolithic (Carbon Fiber)
Searchcoil Size 9 x 8
Searchcoil Family Delta
Cable Length Approx. 42 inches
Audio Frequency Approx. 215 to 830 Hz
Audio Output 2¼” speaker and headphone jack
Headphone Compatibility ¼” stereo plug
Weight (may vary slightly) 2.98 lbs.
Battery Requirement Eight AA (alkaline)
Battery Life (typical) 20 to 30 hours
Optimum Temperature Range 30° to 100° F
Optimum Humidity 0 to 75% R.H.
Operating Modes Slow Auto-Tune All Metal
Silent Search Discriminate
Alternate Silent Search Discriminate
Pinpoint Mode All Metal Fast Auto-Tune

 


Metal Detectorist’s Code of Ethics
  1. Always check federal, state, county and local laws before searching. It is your responsibility to “know the law.”
  2. Abide by all laws, ordinances or regulations that may govern your search and the area you will be in.
  3. Never trespass. Always obtain permission prior to entering private property, mineral claims, or underwater salvage leases.
  4. Do not damage, deface, destroy, or vandalize any property, including ghost towns and deserted structures, and never tamper with any equipment at the site.
  5. Never litter. Always pack out what you take in and remove all trash dug in your search.
  6. Fill all holes, regardless how remote the location. Never dig in a way that will damage, be damaging to, or kill any vegetation.
  7. Do not build fires, camp at or park in non-designated or restricted areas.
  8. Leave all gates and other accesses to land as found.
  9. Never contaminate wells, creeks, or any other water supplies.
  10. Be courteous, considerate, and thoughtful at all times.
  11. Report the discovery of any items of historic significance to the local historical society or proper authorities.
  12. Uphold all finders, search and salvage agreements.
  13. Promote responsible historical research and artifact recovery and the sharing of knowledge with others.

WARRANTY SERVICE

Your Tesoro metal detector is covered by a Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

LIMITED LIFETIME WARRANTY

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.

TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party.

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001 Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.

Tesoro LOBO SUPERTRAQ SUPER TRAQ Metal Detector OPERATOR INSTRUCTION MANUAL

Tesoro LOBO SUPER TRAQ Metal Detector OPERATOR INSTRUCTION MANUAL
 

CONGRATULATIONS!

Your new Tesoro LOBO SuperTRAQ Metal Detector is designed to provide you with many happy hours of gold nugget prospecting and metal detecting. Ahead of you lie fascinating and exciting experiences as you take pleasure in the great outdoors searching for the most beautiful of all precious metals. I wish we could share these experiences with you, and all of us at Tesoro wish you the best of success. Your LOBO SuperTRAQ is capable of meeting your needs in a wide range of gold prospecting and metal detecting situations. As with any other metal detector, familiarity with this instrument is probably the limiting factor in determining how successful you can be. I recommend that you read this manual and understand fully how to operate this metal detector before attempting to use it in the field. As you become more familiar with your metal detector through practice, your rate of success will increase dramatically. The LOBO SuperTRAQ is a precision electronic instrument that will last for years if properly cared for. Treat it right and it won’t let you down.

 

 

 


INTRODUCTION

To be successful in gold nugget prospecting with a detector you must:

  • Use a high-performance metal detector designed specifically for gold prospecting.
  • Learn how to use your metal detector properly.
  • Search where there is gold to be found.
  • Be persistent.

The LOBO SuperTRAQ metal detector is designed for gold prospecting. It will find both large and small gold nuggets. It will find nuggets smaller than a BB under good conditions. It will not find gold dust. Because the LOBO SuperTRAQ is sensitive to all kinds of metals and has Discrimination circuitry, it is also an excellent machine for finding all types of buried metal objects such as coins, relics, jewelry, etc.

This OPERATOR Instruction Manual is designed to help you learn to operate the detector properly for maximum performance in various search conditions. Complete instructions on how to properly operate the LOBO SuperTRAQ are found in the two main sections: PART 1 – GETTING STARTED and PART 2 – OPERATING TECHNIQUES.

If you are new to electronic gold prospecting and operating metal detectors, we highly recommend reading and following the entire GETTING STARTED section to develop the “feel” of your detector. Then, study and practice the OPERATING TECHNIQUES section to get the best performance from your detector.

If you are an experienced detectorist and are familiar with the concepts of metal detecting, you may want to go directly to the Operating Techniques section. Whatever your prior detecting experience is, the more skilled you become at operating this detector, the more rewarding your results will be.

Please keep this in mind: If there is no gold where you are searching, it won’t matter how good your metal detector is or how skilled and persistent you are. To learn more about where to search for gold, see your dealer for magazines and books on the subject.

 


PRODUCT DESCRIPTION

The LOBO SuperTRAQ features Tesoro’s latest electronic innovations including the SuperTRAQ Computerized Ground Mineral Tracking System. State-of-the-art circuitry and advanced design make the LOBO SuperTRAQ one of the finest gold nugget metal detectors available. Expanded Discrimination circuitry lets the LOBO SuperTRAQ double as a high-performance coin and relic hunting detector as well.

The LOBO SuperTRAQ is a Transmitter-Receiver (TR) type detector that operates in the Very Low Frequency (VLF) portion of the Radio Frequency (RF) spectrum. The detector uses three control knobs and two toggle switches to provide full VLF capabilities with fingertip adjustment of all controls.

The performance of this detector will satisfy the requirements of the serious gold nugget prospector and detectorist, whether experienced or a beginner. At the heart of the LOBO SuperTRAQ is a totally new circuit board developed from Surface Mount Technology. This circuit board helps provide ultra-smooth operation in the most difficult soil conditions along with greater depth and sensitivity to smaller gold nuggets.

The features found on the LOBO SuperTRAQ make its power both versatile and easy to use. The SuperTRAQ System automatically performs troublesome “ground balancing.” There are two Operating Modes: All Metal and Discriminate. Slight motion is required in either mode so the searchcoil will detect a target located directly under it. The All Metal Mode tuning is Fast Auto Tune that readjusts the threshold quickly after encountering a target. The Discriminate Mode is Silent Search. The fingertip PINPOINT switch helps identify a target’s exact location by momentarily switching to a No-Motion All Metal Mode without Auto Tune. The LOBO SuperTRAQ also features the added power and depth of Tesoro’s MAXBoost Sensitivity.

The LOBO SuperTRAQ comes standard with a 10” elliptical widescan searchcoil for best all-around performance with good rejection of ground mineralization—a most important feature for gold prospecting. A variety of optional, interchangeable searchcoils are also available, further adding to the versatility of this metal detector.

 


GETTING STARTED – UNPACKING THE BOX

Your Lobo SuperTRAQ was shipped with these parts:

1 Upper Pole Assembly

Fully assembled, including upper pole stem with handle grip, padded arm bracket and control housing.

1 Middle Pole Assembly With Pole Lock

1 ABS Lower Pole Assembly

Fully assembled, complete with two friction washers, mounting screw, and thumb nut.

1 10″ elliptical, widescan searchcoil with 8’ Cable

2 battery packs with 4 AA cell alkaline batteries each

1 Operator Instruction Manual

1 Tesoro Warranty Card

If any of these items are missing, contact the Tesoro Authorized Dealer where you purchased your detector immediately.

Assembly of the Lobo SuperTRAQ is simple and requires no special tools. Just install the batteries, mount the searchcoil on the lower pole assembly, connect the three pole assemblies, wrap the excess cable around the pole and plug the cable into the control housing. Finally, adjust the pole length and searchcoil angle and you’re ready!

 


INSTALLING THE BATTERIES

Your LOBO SuperTRAQ is equipped with a special battery test circuit so that you can always be sure you are getting top performance from the detector.

To install or replace the batteries, first make sure the THRESHOLD control is set to OFF—turned completely counterclockwise past the “click.”

Remove the battery door from the back of the control housing. Do this by pulling the battery door’s two nylatch plungers out until the door pops off.

Remove the battery packs. Place 4 fresh AA size alkaline cells into each pack, observing polarity as marked on the battery packs. Make certain the polarity snaps fit properly. A poor connection may cause the detector to act erratically or fail to operate completely.

Place the battery packs into the battery compartment without pulling or stretching the battery lead wires. Replace the battery door by placing the door into its original position and then pushing in on the nylatch plungers to lock the door into place.

 


ASSEMBLING YOUR DETECTOR

    1. Remove the mounting screw and thumb nut from the black nylon pole tip mounted on the end of the lower pole.
    2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and washers with those of the mounting ears. Note: The pole tip should fit very snugly into the mounting ears.
    3. Insert the mounting screw through the holes in the mounting ears and pole tip—entering from the side opposite the cable connection.
    4. Install the thumb nut on the mounting screw and tighten by hand. Note: Do not overtighten the thumb nut. It should be snug, but not too difficult to loosen up.
    5. On both pole assemblies, turn the plastic lock nuts at the end of the poles completely clockwise to the unlocked position to allow one pole to fit into the other pole. On the middle pole assembly, depress the two spring buttons and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes—locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together. Slide the lower pole into the middle pole until the spring buttons click into the first set of adjustment holes. Turn pole lock to tighten—locking the assembly into place.
      Note: The plastic lock nuts will be used to eliminate any “slop” in the pole joint by turning it counterclockwise to the locked position.

 

 

  1. Wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment. Note: Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.
  2. Plug the male cable end into the female connector on the control housing and tighten the cable thumb nut. You are finished!

Note: You will want to adjust the pole length and searchcoil angle to your preference.


ADJUSTING THE POLE & SEARCHCOIL

The pole length should be adjusted so that the detector does not become uncomfortable or tiring after long periods of use. The detector grip should rest in your hand with your arm relaxed, your elbow straight but not locked, with the pole extending out in front of you at the approximate angle shown in the photo.

You should be able to swing the detector back and forth in front of you—using relaxed shoulder movement—while keeping the searchcoil as close to the ground as possible. This swinging movement is often called a “sweep.”

The searchcoil should not touch the ground during your sweep. The pole length should be adjusted to allow this without having to lift the detector with your elbow or shoulder. The searchcoil should rest about one inch above the ground while you are standing erect. The angle of the searchcoil should allow the bottom to be parallel to the ground.

The pole length is adjusted by depressing the spring buttons and extending or shortening the pole until the spring buttons click into the set of holes that give you the most comfortable pole length.

To adjust the searchcoil angle, simply loosen the searchcoil thumb nut slightly and move the searchcoil into the desired position by hand. Tighten the searchcoil thumb nut by hand so that the searchcoil will hold in place.

 


QUICKSTART – SELF-GUIDED TUTORIAL

The QuickStart is designed to help you use your new LOBO SuperTRAQ metal detector right away, even if you have never used a detector before. Just follow each easy step carefully and you will learn how to set up your detector for basic use. You will also be introduced to some important concepts such as All Metal Operation (ALL MET) and Discrimination (DISC) along the way.

Here’s what you will need:

  • Your fully assembled LOBO SuperTRAQ
  • Three newer coins: a penny*, a nickel and a quarter
  • A nonmetal table or counter surface
  • Approximately 20 minutes to complete the QuickStart

*must be 1984 or newer—made of zinc

Here’s what you will do:

  1. Perform an Audio Battery test.
  2. Adjust the SENSITIVITY control.
  3. Adjust the THRESHOLD control.
  4. Perform an air test in All Metal Mode.
  5. Perform an air test in Discriminate Mode.
Before You Begin – Prepare for the QuickStart

Place your assembled LOBO SuperTRAQ on the nonmetal surface as shown in the photo below. Make sure there are no metal objects near the coil. Remove any jewelry from your hands and wrists.

IMPORTANT: Start out with these control settings:

  • THRESHOLD control set to OFF
  • Mode switch set to DISC
  • Ground selection switch set to NORMAL SOIL
  • SENSITIVITY control set to min
  • DISC LEVEL control set to min
Step 1 – Perform an Audio Battery
  • Test Turn the THRESHOLD control just past OFF

You will hear the battery test tone for a few seconds as the batteries are automatically tested. When the tone stops, the detector is on and the controls are ready for adjusting. NOTE: You should always perform the Audio Battery Test with Mode Switch set to DISC to avoid confusing the battery test tone with the ALL MET “threshold sound.”

Function Demonstrated in Step 1: How the battery test tone will tell you the batteries are working each time the detector is turned on.

WARNING! The Audio Battery Test Sound is quite LOUD. Do NOT put your headphones on before turning on the detector in the field.

Step 2 – Adjust the SENSITIVITY control
  • Turn the SENSITIVITY control from min to 8

This is a good setting to begin with each time you use your detector. Leave the control at this setting for the rest of the QuickStart.

Function Demonstrated in Step 2: Where to set the SENSITIVITY control for basic metal detector operation.

Step 3 – Adjust the THRESHOLD control
  • Flip the MODE switch to ALL MET

When the threshold control is turned to approximately the “9:00 o’clock” position (just past OFF), there is no sound from the detector.

  • Turn the THRESHOLD control clockwise

As the control gets to approximately the “12:00 o’clock” or “1:00 o’clock” position, you will begin to hear a slight sound. Turn the control a little further until you hear a clear tone. (Turning the control completely clockwise will result in a fairly loud noise!) Listen to the continuous, fairly even tone. This is called the “threshold sound.” You will hear the threshold sound only when operating the detector in All Metal Mode.

Turn the control back counterclockwise until the sound is barely audible. Leave the control at this setting for the rest of the QuickStart.

Function Demonstrated in Step 3: How to set the THRESHOLD control for basic All Metal operation.

Step 4 – Perform an air test in All Metal Mode

There are 3 sections in Step 4:

  1. Identify the Target Response
  2. Retune the Threshold (Auto Tune)
  3. Use the Pinpoint Feature

Identify the Target Response

Hold the quarter in your fingertips and move the quarter from side to side about 12 inches in front of the searchcoil.

Gradually move the quarter closer to the searchcoil—as you continue to move it from side to side—until you hear the threshold sound increase. This increase in volume is called the “target response sound.”

Continue to move the coin to test the target response sound. As you do this, try varying the distance or angle of the coin. Try varying the speed you move the coin. Try passing it in front of the edge of the searchcoil and then under the center. Notice the differences in the target response sound with each change.

Repeat the test with each coin. Notice that the detector responds to each coin although the target response sound may vary, sometimes subtly. Your detector will respond to objects made of any kind of metal when the object is in the searchcoil’s sensitivity area or “range.” A detector operating in a mode that responds to all types of metal targets is referred to as “All Metal Mode.”

Retune the Threshold

Hold the quarter still about 2 to 4 inches from the searchcoil, in line with the searchcoil center. Listen to the target response sound for 1 or 2 seconds. Do not move the quarter!

Notice that the target response sound will decrease to the regular level of the threshold sound in just a few seconds. This change in sound is the threshold being automatically retuned. Now, move the quarter from side to side, going past the edge of the searchcoil each time. Notice the regular threshold sound is gone and the target response sound is now a “beep” that occurs when the target passes in front of the searchcoil center. This threshold retuning technique is used in the field to “pinpoint” the exact location of a object.

Take the quarter away from the searchcoil and wait several seconds. Notice the regular threshold sound returns—as the detector automatically retunes the threshold to its original level. Move the quarter close to the searchcoil momentarily and notice the loud continuous target response sound has returned also. Take the quarter away again. A detector operating in this way is called “All Metal Mode with Fast Auto Tune.”

Use the Pinpoint Feature

Hold the quarter still near the searchcoil for a few seconds and notice the detector automatically retunes itself. Moving the coin from side to side will result in the target response sound becoming a “beep” as demonstrated in the previous section. While holding the quarter still near the center of the searchcoil, press and hold the mode switch to PINPOINT.

  • Mode switch held to PINPOINT

Then, while holding the switch to PINPOINT, try moving the coin from side to side. Notice that the normal threshold sound has returned and notice the target response sound is an increase in volume and not a “beep.” Take the quarter away from the searchcoil for a few seconds and try it again. Now, try this test with the different coins listening for the differences in the sounds the various coins make.

Holding the Mode switch in the PINPOINT position removes the Auto Tune until the switch is released. A detector operating in this way is referred to as “No-Motion Pinpointing” because motion is not needed to generate a target response. This technique is used in the field to “pinpoint” the exact location of a object.

Functions Demonstrated in Step 4: 1) How the All Metal Mode target response sound will vary depending on various factors such as what type of metal targets are buried in the ground, how deep they are, how fast you move your searchcoil and so on. 2) How the threshold is automatically retuned with Fast Auto Tune and how this affects the target response sound. 3) How the Pinpoint Mode removes the Auto Tune feature allowing motionless pinpointing.

Step 5 – Perform an air test in Discriminate Mode

There are 2 parts in Step 5:

  1. Identify the Target Response
  2. Use Discrimination
  • Flip the MODE switch to DISC
  • Leave the DISC LEVEL control set to min

Note: In Discriminate Mode, you will not hear the continuous threshold sound of the All Metal Mode.

Identify the Target Response

Hold the quarter in your hand and move the quarter back and forth about 12 inches in front of the searchcoil bottom.

Gradually move the quarter closer to the searchcoil—as you continue to move it back and forth—until you hear a “beep.” This beep is the target response sound.

Continue to move the coin to test the target response sound. As you do this, try varying the distance or angle of the coin. Try varying the speed you move the coin. Try holding the coin still then moving it slightly. Notice the differences in the target response sound with each change.

Repeat the test with each coin. Notice that the detector responds to each coin although the target response sound may vary. Your detector can respond to objects made of any kind of metal if there is movement between the object and the detector. A detector operating in this way is called “Silent Search.”

Use Discrimination

  • Turn the DISC LEVEL control from min to max

Pass the quarter back and forth in front of—and close to—the searchcoil bottom. Notice the sound as the coin nears the center of the searchcoil. Now, try this with the nickel and then the zinc penny. Notice there is no sound with these two coins. The ability of a metal detector to ignore certain types of metal is called “discrimination.” A detector operated in this way is referred to as “Silent Search Discriminate Mode.”

Control settings to ignore most zinc and nickel objects can be:

  • MODE switch: DISC
  • DISC LEVEL: max
  • Move the DISC LEVEL control from max to 7

Pass each of the three coins in front of the coil. Notice the quarter and the zinc penny now cause a target response sound.

Control settings to ignore most nickel objects can be:

  • MODE switch: DISC
  • DISC LEVEL: 7
  • Now move the DISC LEVEL control from 7 to 4

Pass each of the three coins in front of the searchcoil. Notice all three coins now cause a target response sound.

Control settings to include newer US coins while excluding most iron objects can be:

  • Mode Switch DISC
  • DISC LEVEL 4

Functions Demonstrated in Step 5: 1) The motion-based operation and target response sound of Silent Search Discriminate Mode. 2) How the Discriminate Mode can be used to help determine the types of metal a target may be. By adjusting the DISC LEVEL control, you can select what metals your detector will ignore.

CONCLUSION

Well done! You have finished the QuickStart Guide and have operated many of the basic detecting features of the LOBO SuperTRAQ. You have also been introduced to the ideas of: “All Metal Operation,” ”No-Motion Pinpointing,” “Silent Search Operation,” “Target Response Sound,” “Threshold Sound,” “Retuning the Threshold,” “Target Discrimination” and “Target Pinpointing.”

You are almost ready to begin the journey into the art of metal detecting by actually using your detector to find buried metal. But first a word about air tests.

The air tests in the QuickStart are of limited value. Metal detectors perform differently in air tests than when actually used “in the field.” Tesoro detectors are specifically designed to deliver the best performance in the field.

The CONTROLS and TUNING YOUR LOBO SuperTRAQ sections will give you more detailed information on how to set your detector’s controls for the best results—especially when selecting an operating mode and using discrimination.

Finally, the only way you can become truly proficient at using your detector to find gold nuggets and buried treasure is to use it in the field and learn from experience! However, we strongly suggest that you read this entire manual to become proficient with all of the features as you continue to use your detector.

You have the finest tool available, now all you need is the skill that comes from experience.

To Turn Your Detector OFF:

  • Turn The Threshold Control To OFFCounterclockwise past the “click.”

To Turn Your Detector ON:

  • Make Sure The Mode Switch Is Set To DISC
  • Turn The Threshold Control Past OFFCounterclockwise past the “click.”

REMEMBER: DO NOT PUT ON YOUR HEADPHONES UNTIL THE AUDIO BATTERY TEST IS OVER!

 


OPERATING TECHNIQUES – CONTROLS

The LOBO SuperTRAQ has only five controls, all mounted on the front panel of the housing for fingertip adjustment. How these controls should be set for peak performance will depend on the search site conditions, mineral content of the soil and so forth. Use the information in this section as a basis for setting the controls on your detector. Using your detector in the field will allow you to learn the detector’s response to various conditions and will guide you in fine tuning the detector’s operating controls.

THRESHOLD

On/Off Threshold Level Control

This rotary knob control has three functions:

  • Turns the detector ON and OFF
  • Activates the automatic Audio Battery Test
  • Adjusts the Threshold Level

Turning the THRESHOLD knob counterclockwise completely until it “clicks” into the OFF position turns the detector off by disconnecting the batteries from the circuit. NOTE: The detector should always be turned off when not in use.

Turning the THRESHOLD knob clockwise past the initial “click” turns the detector on and activates the automatic Audio Battery Test circuit. This test will give a sound, usually lasting several seconds, that indicates the battery condition. When the test is over, the detector’s Threshold Level can be adjusted.

The threshold is the loudness of the background hum. Most users prefer this background hum to be just barely audible in lightly mineralized ground, or a little louder in moderate to heavy mineralization. A few users like to silence ground noise by setting the THRESHOLD knob slightly below the threshold of audibility, but this will cause loss of some nuggets that would otherwise have been heard.

NOTE: It is best to turn the detector on in Discriminate Mode. Since the Discriminate Mode is a silent mode with no continuous threshold sound, it will be obvious when the Audio Battery Test is complete. If you turn the detector on in All Metal Mode, the Audio Battery Test sound will be immediately followed by the threshold sound. This may make it difficult to hear the Audio Battery Test end and discern the battery condition.

IMPORTANT: The battery test tone can be VERY LOUD. So, it is best to turn the detector on BEFORE putting headphones on to avoid the loud tone.

ALKALI NORMAL SOIL BLK SAND

Ground Selection Switch

NORMAL SOIL— This is the mode you’ll probably operate in over 95% of the time. In this mode, detector response is limited to a smaller range. This helps keep the unit from tuning out small metal targets and smoothes the sound caused by mineralization.

BLK SAND— This mode is similar to the NORMAL SOIL mode, but the sensitivity is reduced in order to accommodate extremely high concentrations of iron minerals such as magnetite black sand. The NORMAL SOIL mode will handle all but the most extreme conditions, and most users will never need to switch to the BLACK SAND mode. But it’s there if you need it, and it will handle the extreme soil that other machines can’t.

ALKALI— This mode is similar to the NORMAL SOIL mode except that the SuperTRAQ circuitry is allowed to operate over a much wider range of mineral signals. The ALKALI mode may allow the ground cancelling to be slightly less effective than the NORMAL SOIL mode.

PINPOINT ALL MET DISC

Mode Selection / Pinpoint Switch

This combination toggle switch has two functions:

  • Sets the operating mode: All Metal or Discriminate
  • Momentarily activates the Pinpoint mode

This toggle has three positions: Downward (DISC)—it locks in place and sets the operating mode to Discriminate. To the center (ALL MET)—it locks in place and sets the operating mode to All Metal. Upward (PINPOINT)—it activates the Pinpoint Mode (a No-Motion All Metal Mode with no Auto Tune) for as long as the switch is held in position. When the switch is released, it spring returns to the center position and returns the detector to the Fast Auto Tune All Metal Mode.

So, this combo switch functions as Mode Selection Switch when used in the lower and center locking positions. It also functions as a Pinpoint Switch by pressing the switch completely upward and holding it in place.

SENSITIVITY

Sensitivity Level Control

Turning the SENSITIVITY knob clockwise increases the detector’s Sensitivity Level. The level from min up to 10 is the normal range. This range corresponds with the normal Sensitivity on standard detectors. Turning the SENSITIVITY knob past 10 into the orange area puts the Sensitivity into the MAXBoost range found only on Tesoro detectors.

In lightly to moderately mineralized ground, you can usually set the SENSITIVITY knob to 10 (normal maximum). In highly mineralized ground, the noise from ground minerals will cover up sounds made from small or deeply buried targets if the SENSITIVITY knob is at 10—so, you will use a lower SENSITIVITY setting. A lower SENSITIVITY setting cuts back on target signals a little, but it cuts back on ground noise a lot more, allowing the target response to rise above the ground noise so you can hear it.

NOTE: The Sensitivity Level affects both operating modes (All Metal or Discriminate) and may require different settings for use in each mode.

DISC LEVEL

Discrimination Level Control

This rotary knob control has one function:

  • Adjusts the Discrimination Level

Once the detector is in the Discriminate Mode, the DISC LEVEL control is used to adjust the detector’s Discrimination Level. Turning the DISC LEVEL knob clockwise increases the detector’s Discrimination Level and vice versa.

NOTE: When operating in All Metal Mode, the DISC LEVEL control is not used.

 


TUNING YOUR LOBO SuperTRAQ

No matter which operating mode you are planning to use when you search with your metal detector, the detector cannot be expected to perform up to spec unless the Ground Adjust procedure is correctly performed so the unit operates as completely mineral free as possible. With manually adjusted units, this can be a procedure which may need to be done every few feet. Fortunately, the LOBO SuperTRAQ has a micro controller based Ground Tracking feature which essentially eliminates this tiresome procedure. The LOBO SuperTRAQ’s procedure is very simple and takes only a few seconds to do. It should be done each time you use the detector, no matter which mode of operation you plan to use.

Once the LOBO SuperTRAQ is properly ground balanced, it tracks the mineral conditions automatically as you hunt in the All Metal Mode. The automatic tracking is disabled when the detector is used in the Discriminate mode.

SuperTRAQ Ground Adjust Procedure
  1. Select a spot on the ground where you feel certain there are no metal targets. You can search for this spot in the all metal mode prior to performing this procedure.
  2. With the detector operating in the All Metal Mode, set the Ground Selection Switch in the Normal Soil position and the Sensitivity Control at 10.
  3. Raise and lower the searchcoil (from about one foot off the ground down to about two inches above the ground) fairly rapidly until you suddenly hear no further changes in the Threshold sound as the coil is raised and lowered. Typically the LOBO SuperTRAQ will do the ground balance in about three or four up and down motions. The detector is now properly ground balanced.

Note: The Ground Selection Switch should always be left in the Normal Soil position since that is where it gives the best ground balance and smoothest operation. If you cannot ground balance in the Normal Soil position, then move the switch to the Alkali position. This will give the circuitry a much broader window for ground balancing, but will yield rougher ground balance and increase the chances of small metal targets being rejected by the circuit. The Black Sand position should only be used when absolutely necessary since it cuts the gain of the input amplifier, which reduces the detector’s sensitivity. If it is necessary to use the Black Sand position, the decreased gain will yield a better chance of finding a good target in the black sand.

Selecting the Proper Operating Mode

The choice of which operating mode to use is really quite simple. If you intend to hunt for gold nuggets, you need to use the All Metal Mode. If you are interested in hunting for relics or caches which may be partially or completely ferrous in nature, you can use either mode, but if Discriminate is used, keep the Discriminate Level Control set at the min position so that ferrous targets are detected. If you want to hunt for any particular class of items, but don’t want to detect other unwanted items, you must use the Discriminate Mode. The Discriminate Level Control can be used to adjust the detector’s response to wanted/unwanted targets.

Operating in the All Metal Mode

Before beginning to operate in the All Metal Mode, perform the SuperTRAQ Ground Adjust procedure outlined above.

When operating in the All Metal Mode, the SuperTRAQ circuitry will automatically keep the detector’s ground balance set for maximum mineral free performance. It will resist tracking on small metal targets, but if for some reason the detector does become unbalanced, the simple act of raising and lowering the searchcoil several times will restore the ground balance.

The Ground Selection Switch should always be left in Normal Soil position unless the detector will not ground balance or you are operating in an area of heavy black sand. If the detector cannot properly ground balance, put the switch in the Alkali position. This will increase the amount of range the SuperTRAQ circuitry can balance out, but performance may be slightly less than when in Normal Soil position. The Black Sand position will cut the electronic gain of the input amplifier to prevent distortion due to the amplifier saturating from the large input signals caused by the black sand. It will decrease the overall sensitivity of the detector, but will make it much easier to find a target located in black sand.

The Sensitivity Control should always be at the highest level possible to yield smooth operation. If the detector becomes somewhat unstable at maximum sensitivity, stability can be restored by lowering the Sensitivity Control level. Reducing the Sensitivity Control level in order to gain stability will not cause an enormous loss of depth. It will give a better ability to see small targets, effectively yielding better depth.

Operating in the Discriminate Mode

Before beginning to search in the Discriminate Mode, perform the SuperTRAQ Ground Adjust procedure outlined above.

In the Discriminate Mode of operation, the Threshold sound will no longer be heard, since the LOBO SuperTRAQ uses Silent Search Discrimination. The Discrimination Level Control will set the effective good/bad rejection level desired. See the figure below, Discrimination Level Settings, to determine the approximate setting to reject the unwanted targets. The searchcoil needs to be moving slightly with respect to the target in order to find targets in Discriminate Mode.

The Sensitivity Level control should be kept as high as possible without causing unstable operation or false target signals. The MAXBoost area (denoted by the orange colored area above 10) can be used, but in some conditions the detector may become too noisy or erratic for good operation. Turning the Sensitivity Level control down slightly to restore stability will again give an apparent increase in depth by making the detector’s response easier to discern without having to separate the “good” signals from the “bad.”


FIELD USE PINPOINTING

Pinpointing with the LOBO SuperTRAQ can be accomplished easily in either the All Metal Mode or the Discriminate Mode. The detector also has a pinpoint position on its Mode Selection Switch labeled PINPOINT, which may make pinpointing even easier. In this position, the automatic threshold tuning is eliminated, and the gain is reduced, so it will be easy to tell where the loudest target response is located.

Move the searchcoil back and forth and forward and backward until you get the loudest audio response. The target should be directly below the searchcoil center at the time of loudest response. If the audio response is at maximum over a very broad range of movement, momentarily stop the searchcoil in the center of this area and release the pinpoint switch until the detector retunes itself back to threshold. Then press the switch back to the pinpoint position and continue moving the searchcoil to find the loudest response. This retuning in the middle of the loud area will greatly reduce the area of response.

You may have better luck pinpointing by “X-ing” the target. To do this, sweep the coil from side to side over the target until you determine the coil position when the loudest response is present. Make a mental note of this position, which will give you one of the lines of the X you are about to make. Turn 90 degrees to this line and sweep back and forth until you again get the loudest response. The position of the coil at this time should give you the other line, and the target is at the center of the X formed by these two lines. Dig where the two lines intersect.

Recovering Your Target

Even with the extreme power of the LOBO SuperTRAQ, pinpointing isn’t enough to recover your target. Since most of the really tiny nuggets look just like the rocks and other pieces of soil they are found in, they can be very difficult to locate. Also most of your targets will not be gold, they will be junk, such as nails, tacks, iron, pulltabs, etc. You will need to dig them all to be sure you don’t miss that occasional small piece of gold.

Your choice of a digging tool will be up to you, but most prospectors use a small pick axe and carry a magnet to help pick out iron targets. Some stores sell a pick axe with a magnet in the end of the handle.

When you have pinpointed your target, dig some of the soil back from the pinpointed area with your pick axe. Recheck with your detector to see if you have moved the target. If you haven’t, dig some more dirt out from the pinpointed area. When you succeed in moving the target, try the magnet to see if you can pick up the target. If the magnet doesn’t pick it up, you can try grabbing some dirt in your hand, and waving it over the detector’s coil. However, the LOBO SuperTRAQ will probably read the fleshy center part of your hand as being a good target, so it may be necessary to use your fingertips or use two plastic scoops to try to separate the target from the dirt.

Pick up a scoop full of dirt and pass it over the searchcoil of the detector to see if the target is in the scoop. If not, discard the dirt, and try another scoop. When the scoop contains the target, dump one half of the dirt from the first scoop to the second scoop. Try both scoops over the coil to see which one contains the target. Discard the dirt from the scoop which has no target and continue dividing and checking until you get the dirt down to a small enough sample that you can visually pick out the target.

If your target is big enough that you don’t have trouble separating it from the dirt, and if it is gold, then congratulations! Finding a large piece of gold makes the day a lot more enjoyable, but usually your gold targets will be small pieces.

BATTERY REPLACEMENT

The LOBO SuperTRAQ has an automatic battery test sequence with each initial power turn on. To check the batteries, simply turn the LOBO SuperTRAQ off for about five seconds, and then turn it back on. The battery test circuit will engage for about 3 to 5 seconds, with the audio output loudness indicating the remaining battery strength. As the batteries age, this tone will get quieter, and when you hear only a brief buzz or no output at all, it’s time to replace the batteries.

To replace the batteries, pull the large knobs on the battery door on the rear of the unit. The entire door will pop out. Remove the battery packs from the detector, and then remove the batteries from the packs. Replace the new penlight batteries into the packs, observing the polarity indicators that are embossed into the insides of the packs. Slide the packs back into the detector, making sure the battery clip leads are connected to the packs. Install the battery door back onto the chassis and push the nylon fasteners into the holes on the chassis, making sure that the plungers are still pulled out. Then push the plungers back in to lock the door in place.

GENERAL INFORMATION – CARE AND USE

If the detector is to be stored for a long period of time, it is best to remove the battery pack from the detector. This will prevent internal damage to the detector if the batteries should leak.

The searchcoil is waterproof and may be submerged in either fresh or salt water. Caution should be exercised to prevent water from entering the chassis, where it could damage the electronic circuitry. After the coil is used in salt water, the coil and lower stem assembly should be rinsed well with fresh water to prevent corrosion of the metal parts.

There are several good books to help the beginner learn how to use the detector, where to search and how to recover a target without damaging the environment. A good detectorist can recover a lot of finds and leave the area looking as though he had never been there. Above all, always fill your holes when you have recovered the target.

TESORO Metal Detectors are sold through independent dealers, who are almost always treasure hunters themselves. They can provide you with much needed information about how to use your detector, how to probe, plug and dig in your locale, and answer most of your questions about treasure hunting in general.

The use of earphones will benefit you in two ways. Most earphones will very effectively block out most of the ambient noise, such as traffic noise and wind noise, which will enable you to better hear the fainter signals caused by the deeper targets. Obviously, the older, more valuable coins will probably be deeper than the ones which were lost last week, so you should take advantage of anything that will help you hear the weaker signals. Secondly, using earphones will greatly extend the battery life, since it takes much less power to operate them. The LOBO SuperTRAQ is not equipped with a volume control, but does have a limited circuit in the earphone jack. If less volume is desired with earphones, you may want to use earphones with a built-in volume control. Any good 8 to 16 ohm set with ¼ inch stereo jack will do.

HAPPY HUNTING, and thank you for purchasing a TESORO.
 

 


SPECIFICATIONS
Operating Frequency 17.8 kHz
Searchcoil Type Elliptical, widescan
Searchcoil Size 10″ elliptical (length)
Searchcoil Family Delta
Cable Length Approx. 8’
Audio Frequency Approx. 330 Hz to 550 Hz
Audio Output 1½” speaker and headphone jack
Headphone Compatibility ¼” stereo plug
Weight (may vary slightly) 3.5 lbs. (may vary slightly)
Battery Requirement Eight AA cells (alkaline)
Battery Life (typical) 20 to 30 hours (typical)
Optimum Temperature Range 30° to 100° F
Optimum Humidity 0 to 75% R.H.
Operating Modes All Metal (motion required)
Silent Search Discriminate
All Metal Tuning Mode Fast Auto Tune
Pinpoint Mode No-Motion All Metal (no Auto Tune)

 


METAL DETECTORIST’S CODE OF ETHICS

Always check federal, state, county and local laws before searching. It is your responsibility to “know the law.”

Abide by all laws, ordinances or regulations that may govern your search and the area you will be in.

Never trespass. Always obtain permission prior to entering private property, mineral claims, or underwater salvage leases.

Do not damage, deface, destroy, or vandalize any property, including ghost towns and deserted structures, and never tamper with any equipment at the site.

Never litter. Always pack out what you take in and remove all trash dug in your search.

Fill all holes, regardless how remote the location. Never dig in a way that will damage, be damaging to, or kill any vegetation.

Do not build fires, camp at or park in non-designated or restricted areas.

Leave all gates and other accesses to land as found.

Never contaminate wells, creeks, or any other water supplies.

Be courteous, considerate, and thoughtful at all times.

Report the discovery of any items of historic significance to the local historical society or proper authorities.

Uphold all finders, search and salvage agreements.

Promote responsible historical research and artifact recovery and the sharing of knowledge with others.

 


WARRANTY SERVICE

Your Tesoro metal detector is covered by a Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

LIMITED LIFETIME WARRANTY

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.

TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party.

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001 Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.

 

Tesoro SAND SHARK Metal Detector OPERATOR INSTRUCTION MANUAL Salt water submersible diving

Tesoro SAND SHARK Metal Detector OPERATOR INSTRUCTION MANUAL
 

CONGRATULATIONS!

Your new TESORO metal detector was designed to provide you with many happy hours of enjoyment in the most rewarding hobby I can think of—treasure hunting. Ahead of you lie fascinating and exciting experiences as you step into the past, uncovering artifacts lost by past generations. I wish we could share these experiences with you, and we wish you the best of success.

Your Tesoro metal detector is capable of meeting your needs in a wide range of treasure hunting situations. As with any detector, operator skill and familiarity is probably the limiting factor in determining how successful you will be. We recommend that you read and understand this manual fully before attempting to use the instrument in the field. Then, as you practice and become familiar with your detector, your rate of success will increase dramatically.

Your TESORO metal detector is a precision electronic instrument, which will last for years if properly cared for. Treat it right and it won’t let you down.

 

 

 


GENERAL DESCRIPTION

The Sand Shark is the first Pulse Induction metal detector that is controlled by microprocessor technology. It combines new technology with Tesoro’s time-proven PI circuits and interchangeable Spiral Printed coils. While simple to operate, the Sand Shark offers a wide variety of user definable controls that allow for precise fine-tuning of the detector. Don’t be fooled by its simplicity, the Sand Shark is capable of delivering peak performance by eliminating troublesome adjustments and complicated features creating an extremely simple to operate lightweight detector. The Sand Shark is packaged in a waterproof housing making it ideal for wet weather use, beach hunting, or diving in fresh or salt water. It is convertible to body/belt mount and requires no special tools.

As a Pulse Induction instrument the Sand Shark will provide mineral free operation in virtually all ground mineral or salt water environments. Equipped with auto tuning the Sand Shark is a motion- based “all metal” detector. Though the searchcoil must be moving when pinpointing, due to the auto tuning, the amount of motion is so slight that pinpointing is easily accomplished.

Designed as an all-purpose detector, the Sand Shark requires no special ground adjustments or complicated set-up. A variety of optional searchcoils provide the operator greater versatility and a wider range of site selection. A guide to selecting the proper optional coil is included in the section for “Selecting the Right Searchcoil.”

Be sure to complete and mail the warranty registration card in order to validate your warranty.

 


UNPACKING THE BOX

Your Sand Shark was shipped with these parts:

1 Upper Pole Assembly

Fully assembled, including upper pole stem with handle grip, padded arm bracket, pole lock and control housing.

1 Middle Pole Assembly With Pole Lock

1 Lower Pole Assembly

Fully assembled with 2 washers and nylon nut and bolt.

1 8” round printed spiral searchcoil with 8′ cable

1 8-cell battery pack with 8 AA batteries installed

1 Tube of Dow Corning #4 silicone

2 Velcro cable straps

1 Operator Instruction Manual

1 Tesoro Warranty Card

If any of these items are missing, contact the Tesoro Authorized Dealer where you purchased your detector immediately.


ASSEMBLING YOUR DETECTOR

    1. On the lower pole assembly, remove the mounting screw and thumb nut from the pole tip.
    2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and washers with those of the mounting ears.
      Note: The pole tip should fit very snugly into the mounting ears.
    3. Insert the mounting screw through the holes in the mounting ears and pole tip—entering from the side opposite the cable connection.
    4. Install the thumb nut on the mounting screw and tighten by hand.
      Note: Do not overtighten the thumb nut. It should be snug but not too difficult to loosen up.
    5. On the middle pole assembly, depress the two spring buttons and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes—locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together.

 

 

  1. Slide lower pole into middle pole until spring buttons click into the first set of adjustment holes. Turn pole lock to tighten—locking the assembly into place.
  2. The Sand Shark can be assembled in several different configurations. Take a look at the pictures below to find out the best configuration for you:Control housing mounted under arm
    Control housing mounted under pole
    Divers setup (lower pole set directly into upper pole)
    Body Mount
    Converting the Sand Shark from pole mount to body/belt mount is simply a matter of removing the control box from the upper pole and unwinding the cable. To remove the control box from the pole, depress the four spring buttons that hold the mounting bracket and control box to the pole, and lift. It is easiest to release one set of spring buttons at a time.
  3. Once you have decided on a pole mount configuration, wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment.
    Install the coil connector into its receptacle on the back of the control housing and tighten it fingertight.

Note: Do not use pliers to tighten the coil connector. Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.

 


BATTERY INSTALLATION / REPLACEMENT

The Sand Shark has been equipped with a drop-in battery pack. To install or replace the batteries, make sure the detector housing is dry, then release the two draw bolts securing the faceplate to the housing. Gently pull the control panel free being careful not to twist or strain the ribbon cable connecting the faceplate panel to the printed circuit board. The Sand Shark takes 8 AA size alkaline batteries. Also, make certain that you follow the polarity indicators on both the battery holder as well as the batteries themselves. Then check the polarity of the pack as it goes into the housing. Look inside the housing for the two spring clips and slide the pack so that the battery terminals meet the spring clips. There is only one correct way to put the battery pack in. If the batteries are put in wrong, the detector will not work. Replace the faceplate and use the drawbolts to clamp the faceplate back onto the housing.

Do not rest the unit on the coil connector while clamping the faceplate. This can cause excess wear and damage to the connector.

IMPORTANT NOTE: Always make sure the instrument is dry before opening. Water, if allowed to make contact with the circuit board, may damage it. Always make sure the O-ring is clean and free of dirt or sand. It is recommended that you wipe the O-ring with a dry cloth and look for damage and apply a new coat of diver’s silicone grease before replacing it. Failure to maintain the O-ring will result in extensive damage and will not be covered under warranty.


ADJUSTMENT

The searchcoil angle and stem length should be adjusted so that the unit does not become uncomfortable or tiring to hold after long periods of use. The detector should rest in your hand with arm relaxed allowing it to swing back and forth without having to lift with the elbow or shoulder while keeping the searchcoil as close as possible to the ground without touching. The pole length is adjusted by depressing the spring buttons and extending or shortening the lower stem until they click into the set of holes that give you the most comfortable setting. The searchcoil should rest about one inch above the ground while standing erect. Adjust the angle of the searchcoil so that it is parallel to the ground. Tighten the searchcoil thumbnut by hand so that the searchcoil will maintain this setting.


QUICKSTART TEST AND TUNING PROCEDURES

The Quickstart is designed to teach you how to use your new Sand Shark. It provides a quick and easy means of learning all of the functions of your detector and the concepts behind the functions.

You will need the following items:

  1. Your fully assembled Sand Shark metal detector.
  2. Several targets for air test.
  3. A nonmetal table or counter surface.

Here’s what you will do:

  1. Set the THRESHOLD and VOLUME.
  2. Perform an Audio Battery Test.
  3. Perform an Air Test in the VCO Mode.
  4. Set the Audio Frequency for the NORMAL Mode.
  5. Perform an Air Test in the NORMAL Mode.
  6. Set the Pulse Width.
Prepare for the Quickstart

Place your assembled Sand Shark on the nonmetal surface as shown in the photo. Make sure there are no metal objects near the coil and remove any jewelry from your hands and wrists.

Start with the controls like this:

  1. PULSE WIDTH in center position.
  2. VOLUME & THRESHOLD in the 1 o’clock position.
  3. Mode Switch in OFF position.
Set the Threshold and Volume

The Mode Switch controls all of the tuning functions on your Sand Shark. As we go through the other tuning steps, we will be resetting the Mode switch to the other functions.

We will start by turning the Mode Switch from off to VCO. At this time you will hear a humming tone in the headphones. This sound is the threshold. Its purpose is to give you a reference point to judge targets by. Some targets may be small enough or deep enough that they will not be able to generate an audio tone by themselves. By monitoring a threshold, you already have a signal so changes in that signal are easier to hear. However if the threshold is set too loud, the small changes will not be noticed. Therefore, a low steady threshold setting is ideal. You can change the threshold with the Threshold adjust knob. Try turning it up and down to find the best possible setting for the machine.

Once the threshold has been set, you should adjust the volume control to a comfortable level. Please remember that the sound level will be affected by your surroundings. What may be just right in one location may be too high or low in another. The volume can be changed with the VOLUME adjust knob. Take a moment and find the level that is best for you now.

Perform an Audio Battery Test

With the threshold and volume set, we will now check the batteries. Turn the THRESHOLD adjust knob all the way counterclockwise until you feel a click. You should hear a number of beeps. If the batteries are fully charged, you will hear 6 or 7 beeps. As the batteries drain, you will hear fewer and fewer beeps. When you hear no beeps or only one, it will be time to replace your batteries. Please remember that you will have to reset your threshold when you are done with the battery test. Try your battery test and reset your threshold before moving to the next step.

Perform an Air Test in the VCO mode

You are now ready to perform an air test in the VCO Mode. VCO stands for Voltage Controlled Oscillator. The VCO mode has a very distinct sound that makes it very easy to work with. As a target gets close to the coil, the rise in signal voltage causes the oscillator to change frequency and amplitude causing the audio part of the signal to become higher in pitch and louder in volume. These changes will leave no doubt in your mind that you are close to a target. Try waving your targets in front of the coil. Start from a distance of 10 to 12 inches away from the coil and work your way towards the coil. Now try starting from 6 inches to the left or right side of the coil and working your way to the center of the coil. Notice how the audio signal changes. Your strongest signal will always be closest to the center of the coil, but additional information can also be learned by the signal strength. A deep or small target will give a smaller change in the threshold than a larger or shallower target will give. Take some time to try a number of different targets at different depths to find out how your detector sounds.

Set the Audio Frequency for the Normal Mode

In the NORMAL tuning mode you will be able to preset the frequency of the audio tone that you will hear in the headphones. The adjustment is made by going into the “F” SET Mode on the Mode switch. Notice that the “F” SET is highlighted in this mode and that “F” ADJUST written in the same highlighting is found beneath the THRESHOLD adjust knob. When the mode switch is in “F” SET, the THRESHOLD adjust knob now sets the audio tone. Try turning the “F” ADJUST knob up and down to find the audio frequency that you like best. While you are in the “F” SET mode, your Sand Shark will not respond to targets. When you are ready, turn the Mode switch to NORMAL. Please remember that once the frequency is set, you must reset your threshold to a low steady hum.

Perform an Air Test in the Normal Mode

You are now operating in the NORMAL Mode. In this mode only, one frequency at a time will be heard and the volume of the audio signal will determine signal strength. Try waving your targets in front of the coil. Start from a distance of 10 to 12 inches away from the coil and work your way towards the coil. Now try starting from 6 inches to the left or right side of the coil and working your way to the center of the coil. Notice the difference from what you heard in the air test in the VCO Mode. Your strongest signal is still closest to the center of the coil, but there was no change in audio frequency. Take some time to try a number of different targets at different depths to find out how your detector sounds.

Set the Pulse Width

The PULSE WIDTH setting controls the amount of signal that the Sand Shark will transmit into the ground. A pulse induction detector works by transmitting a signal and then reading the residual eddy currents that are left on metal items. All of this takes place at approximately 600 pulses per second. Increasing the pulse width allows the detector to transmit longer and create more eddy currents on a metal target. These extra currents are more easily picked up during the receive phase and will therefore increase depth and sensitivity. However, more transmitted signal means more power used in the transmit phase, limiting the battery life. We have marked the best balance of battery life and depth and sensitivity on the faceplate at the mid-position on the PULSE WIDTH adjust knob. You will be able to increase or decease the PULSE WIDTH by turning the Pulse width adjust knob. Start with the detector in the factory recommended position and wave a few targets in front of the coil. Try turning the knob and see what effects it has on depth and sensitivity.

 


CONGRATULATIONS

You have completed the Sand Shark Quickstart Test and Tuning Procedures and in the process have learned quite a lot about your new Sand Shark. But experience is the best teacher. I would recommend that you get out and practice with your detector as much as possible. For your convenience, you may want to create a test garden in your lawn or work a local park. Any time spent using your detector will give you valuable experience.

 


SELECTING THE RIGHT SEARCHCOIL

Selecting the right searchcoil for the type of detecting you’re doing will add greatly to your success. The Sand Shark comes with a standard 8 inch Printed Spiral coil, which is a new and revolutionary design developed by Tesoro specifically for the Sand Shark. This is an excellent overall coil since most people who operate PI instruments are usually searching large sandy beach areas where targets are easy to dig and there is usually not an over abundance of trash. This coil will detect very tiny targets for its size and provides excellent target separation while giving more ground coverage. However, it is not always the right coil for the job. Therefore, Tesoro has made it possible to interchange coils and has developed a variety of its unique Printed Spiral searchcoil in a selection of sizes.

In addition to the standard 8 inch open center searchcoil, three optional coil sizes are available for the Sand Shark. The 10 1/2 inch open center coil is designed for areas where digging is easier and where junk targets may not be too numerous. The 7 inch coil will be particularly useful when searching for smaller targets, such as gold nuggets. The 10 inch elliptical allows a widescan sweep pattern while keeping a good sensitivity to small targets.

 


PINPOINTING

Move the searchcoil slowly across the target from side to side and then from front to back at 90 degree angles. Raise the coil slightly, slow the sweep speed, and shorten the sweep to narrow the detection area enough to make it easy to tell where the coil center is at the instant of sound as you crisscross the target.

 


DETECTOR PROTECTION CHECKLIST

Congratulations, you have just purchased a new metal detector, and we wish to thank you for choosing Tesoro.

So many people are disappointed when their new “state-of-the-art” detector becomes less and less exciting to use and doesn’t seem to go as deep anymore. There is something that you can do to keep your new detector working as good as when it was new.

The most important thing is simply to remember that your detector is an electronic instrument and to treat it as such. You wouldn’t expect your TV set to operate properly if you stored it in the trunk of your car, would you?

We have generated the following list to help you take care of your detector and to help ensure that you do not void its warranty. If you will follow its guidelines, you will find your detector will not let you down.

  1. Operate your detector exactly as recommended in this Operator Instruction Manual.
  2. Do not attempt to modify or repair the detector’s electronics.
  3. Cable is hard-wired into searchcoil. Do not attempt removal of the spring retainer on the searchcoil housing.
  4. Use only high quality carbon-zinc, alkaline, or nicad batteries. Remove batteries during long term storage. Never substitute batteries of other voltages. Brands should not be mixed. Do not attempt to modify the power supply system.
  5. Never spray lubricants such as WD-40 or any types of cleaners, sealants or other chemical preparation on or into the detector.
  6. Avoid banging the searchcoil against rocks or foundation walls.
  7. Always protect the searchcoil with a properly designed scuff cover.
  8. Remove and clean out scuff covers periodically to avoid buildup of mineralized or metallic particles.
  9. After use, clean the detector with a soft cloth to remove any dust, moisture, or other contaminants.
  10. Do not transport or store your detector in the trunk of your car.
  11. Keep cables properly wound to stem and protected. Floppy or pinched cables may short causing erratic noises or unnecessary replacement of searchcoils.
  12. Protect the detector from dust, moisture, and extreme temperatures during storage. Avoid storing it in places such as attics, basements or garages. When shipping the detector, use the original factory carton or a similar heavy-duty container. A one inch minimum clearance of padding around the detector must be provided when shipping.
  13. Treat your detector as you would any sensitive electronic instrument. Although ruggedly constructed and designed to withstand the demands of normal treasure hunting applications, it is not intended to be improperly operated or abused.

 


SPECIFICATIONS
Operating Frequency 600 pps
Searchcoil Type Printed Spiral
Searchcoil Size 8 inch Diameter
Audio Frequency Approx. 220-450 Hz
Audio Output Stereo Piezo Headphones
Weight (may vary slightly) Less than 4½ lbs.
Battery Requirement (8) AA DC (alkaline)
Battery Life (typical) 10 to 20 hours
Optimum Temperature Range 30° to 100° F
Optimum Humidity 0 to 75% R.H.
Operating Modes VCO Motion All Metal
Adjustable Audio Frequency All Metal
Maximum Depth Rating 200 ft.

 

WARRANTY SERVICE

Your Tesoro metal detector is covered by a Limited Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

LIMITED LIFETIME WARRANTY

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.

TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party.

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001 Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.

Tesoro TIGER SHARK Metal Detector OPERATOR INSTRUCTION MANUAL

Tesoro TIGER SHARK Metal Detector OPERATOR INSTRUCTION MANUAL
 CONGRATULATIONS!

Your new TESORO metal detector was designed to provide you with many happy hours of enjoyment in the most rewarding hobby I can think of – treasure hunting. Ahead of you lie fascinating and exciting experiences as you step into the past, uncovering artifacts lost by past generations. I wish we could share these experiences with you, and we wish you the best of success.

Your Tesoro metal detector is capable of meeting your needs in a wide range of treasure hunting situations. As with any detector, operator and familiarity is probably the limiting factor in determining how successful you will be. We recommend that you read and understand this manual fully before attempting to use the instrument in the field. Then, as you practice and become familiar with your detector, your rate of success will increase dramatically.

Your TESORO metal detector is a precision electronic instrument, which will last for years if properly cared for. Treat it right and it won’t let you down.

 

 

 


GENERAL DESCRIPTION

The Tiger Shark uses microprocessor technology to create a true dual function machine. In Normal Mode, the Tiger Shark works like any other Tesoro detector. It uses the same great ground balance and discrimination features that made the Bandido and Eldorado series so successful. On land, the Tiger Shark can be used for coin and relic hunting and even gold prospecting. By using the four controls on the outside, you can fine tune your detector to handle whatever conditions you are working in.

We all know that working in the wet salt areas is different than working in any type of dry area. This is where the Tiger Shark outshines the land detectors. In land conditions, the most crucial adjustment is using the ground balance to tune out mineralization. In wet salt conditions, changes in the conductivity in the sand cause most of the problems. The Tiger Shark uses a completely different set of internal settings in the SALT Mode than in the NORM Mode. There are no special controls or techniques to remember. When working on a salt water beach, just switch to SALT Mode, adjust the Ground Balance and start hunting.

The Tiger Shark continues in the tradition of other great Tesoro underwater machines by having interchangeable coils available. Along with the 8″ coil that comes standard with the detector, we also manufacture a 7″ and a 10 1/2″ coil. To see if one of these coils is right for you, ask your local dealer or check the section in this manual titled “Selecting the Right Searchcoil.”

 


UNPACKING THE BOX

Your Tiger Shark was shipped with these parts:

1 Upper Pole Assembly

Fully assembled, including upper pole stem with handle grip, padded arm bracket, and pole lock.

1 Control Housing With Headphones Attached

1 Middle Pole Assembly With Pole Lock

1 Lower Pole Assembly

Fully assembled with 2 washers and nylon nut and bolt.

1 8” round printed spiral searchcoil with 8′ cable

1 8-cell battery pack with 8 AA batteries installed

1 Tube of Dow Corning #4 silicone

2 Velcro cable straps

1 Operator Instruction Manual

1 Tesoro Warranty Card

If any of these items are missing, contact the Tesoro Authorized Dealer where you purchased your detector immediately.


ASSEMBLING YOUR DETECTOR

    1. On the lower pole assembly, remove the mounting screw and thumb nut from the black nylon pole tip.
    2. Insert the pole tip between the mounting ears of the searchcoil and align the holes of the pole tip and washers with those of the mounting ears.
      Note: The pole tip should fit very snugly into the mounting ears.
    3. Insert the mounting screw through the holes in the mounting ears and pole tip entering from the side opposite the cable connection.
    4. Install the thumb nut on the mounting screw and tighten by hand.
      Note: Do not overtighten the thumb nut. It should be snug, but not too difficult to loosen up.
    5. On the middle pole assembly, depress the two spring buttons and slide the middle pole assembly into the upper pole assembly until the spring buttons click into the holes, thus locking the two assemblies into place. Tighten the pole lock to secure the two assemblies together.

 

 

  1. Slide lower pole into middle pole until spring buttons click into the first set of adjustment holes. Turn pole lock to tighten, thus locking the assembly into place.
  2. The Tiger Shark can be assembled in several different configurations. Take a look at the pictures below to find out the best configuration for you:Control housing mounted under arm
    Control housing mounted under pole
    Divers setup (lower pole set directly into upper pole)

    Body Mount

    Converting the Tiger Shark from pole mount to body/belt mount is simply a matter of removing the control box from the upper pole and unwinding the cable. To remove the control box from the pole, depress the four spring buttons that hold the mounting bracket and control box to the pole and lift. It is easiest to release one set of spring buttons at a time.

  3. Once you have decided on a pole mount configuration, wrap the cable around the pole leaving enough slack near the searchcoil to permit searchcoil adjustment.
    Install the coil connector into its receptacle on the back of the control housing and tighten it fingertight.

Note: Do not use pliers to tighten the coil connector. Do not allow the cable to flop loosely over the searchcoil. Since the detector is sensitive enough to “see” the tiny wires in the cable, a floppy cable can cause false signals as the searchcoil senses the moving wires.

 


BATTERY INSTALLATION / REPLACEMENT

The Tiger Shark has been equipped with a drop-in battery pack. To install or replace the batteries, make sure the detector housing is dry, then release the two draw bolts securing the faceplate to the housing. Gently pull the control panel free being careful not to twist or strain the ribbon cable connecting the faceplate panel to the printed circuit board. The Tiger Shark takes 8 AA size alkaline batteries. Also, make certain that you follow the polarity indicators on both the battery holder as well as the batteries themselves. Then check the polarity of the pack as it goes into the housing. Look inside the housing for the two spring clips and slide the pack so that the battery pack terminals meet the spring clips. There is only one correct way to put the battery pack in. If the batteries are put in wrong, the detector will not work. Replace the faceplate and use the drawbolts to clamp the faceplate back onto the housing.

Do not rest the unit on the coil connector while clamping the faceplate. This can cause excess wear and damage to the connector.

IMPORTANT NOTE: Always make sure the instrument is dry before opening. Water, if allowed to make contact with the circuit board, may damage it. Always make sure the O-ring is clean and free of dirt or sand. It is recommended that you wipe the O-ring with a dry cloth and look for damage and apply a new coat of diver’s silicone grease before replacing it. Failure to maintain the O-ring will result in extensive damage and will not be covered under warranty.


ADJUSTMENT

The searchcoil angle and stem length should be adjusted so that the unit does not become uncomfortable or tiring to hold after long periods of use. The detector should rest in your hand with arm relaxed allowing it to swing back and forth without having to lift with the elbow or shoulder while keeping the searchcoil as close as possible to the ground without touching. The pole length is adjusted by depressing the spring buttons and extending or shortening the lower stem until they click into the set of holes that give you the most comfortable setting. The searchcoil should rest about one inch above the ground while standing erect. Adjust the angle of the searchcoil so that it is parallel to the ground. Tighten the searchcoil thumbnut by hand so that the searchcoil will maintain this setting.


QUICKSTART TEST AND TUNING PROCEDURES

The Quickstart is designed to teach you how to use your new Tiger Shark. It provides a quick and easy means of learning your detector and the concepts behind all of the functions.

Important Note:

The Tiger Shark has two very different modes of operation. Normal is used for dry land hunting or fresh water hunting. Salt Mode is for wet salt sand and salt water hunting only. The modes cannot be interchanged. When you switch modes, you are actually changing the internal setup of your Tiger Shark. Please be very aware what mode your detector is in while you are hunting.

The controls for the two separate modes on your Tiger Shark operate almost exactly the same. As you follow the Quickstart, it will be assumed that you are operating in the Normal Mode. Any differences between the Normal and Salt Modes will be noted. You may want to go through the Quickstart in Normal Mode first and then repeat it using the Salt Mode.

You will need the following items:

  1. Your fully assembled Tiger Shark Detector.
  2. An iron target (a small nail or screw will do), a nickel, a pull tab and a quarter.
  3. A fine jeweler’s screwdriver.
  4. A nonmetal table or counter surface.

Here’s what you will do:

  1. Perform an Audio Battery Test.
  2. Set Ground Adjust.
  3. Perform Air Test in ALL MET Mode.
  4. Check and Set the Internal Controls.
  5. Perform Air Test in MOTION DISC Mode.
Prepare for the Quickstart

Place your assembled Tiger Shark on the nonmetal surface as shown in the photo below. Make sure there are no metal objects near the coil and remove any jewelry from your hands and wrists.

Start with the controls like this:

  1. Mode in the OFF position
  2. TUNE SPEED in the ALL MET FAST position
  3. DISC LEVEL at MIN
  4. GROUND ADJUST at 12:00
Perform Audio Battery Test

Turn the Mode Switch from OFF to NORM (if you are doing this test for the Salt Mode, switch from OFF past NORM and directly into SALT). This will turn on the detector and will give you a number of beeps. If the batteries are fully charged, you will hear 6 or 7 beeps. As the batteries drain, you will hear fewer and fewer beeps. When you hear one or two beeps, it will be time to replace your batteries.

After the beeps are done, you will hear a slight humming sound. This is the threshold tone. Its purpose is to give you a reference point to judge targets by. Some targets may be small enough or deep enough that they will not be able to generate an audio signal by themselves. By monitoring a threshold, you already have a signal so changes in that signal will be easier to hear. However, if the threshold is set too loud or too soft, small changes in the signal will be hard to hear. We will be talking about changing the threshold tone a little later.

Set Ground Adjust

We will now set the GROUND ADJUST for the air test. This method is only for the Quickstart tests. See the section “Ground Balancing Your Tiger Shark” for the correct procedure for ground balancing your Tiger Shark in the field. Please note that the NORM and the SALT Modes work at different ends of the GROUND ADJUST knob.

Ground balance for the NORM Mode: Turn your GROUND ADJUST knob clockwise or towards the positive side for 5 full turns. This will take you past the end range of the GROUND ADJUST potentiometer. The knob has no end stops, but you may notice a very slight increase in the drag of the knob as it passes the 3 and 3/4 mark. By turning the knob 5 full turns clockwise, we are assured that the GROUND ADJUST is in the very farthest positive position. Once you are at the positive position, turn the GROUND ADJUST knob a 1/2 turn counterclockwise or towards the negative side. This is an air test position only that will let you proceed with the rest of the Quickstart.

Ground balance for the SALT Mode: Turn your GROUND ADJUST knob counterclockwise or towards the negative side for 5 full turns. This will take you past the end range of the GROUND ADJUST potentiometer. The knob has no end stops, but you may notice a very slight increase in the drag of the knob as it passes the 3 and 3/4 mark. By turning the knob 5 full turns counterclockwise, we are assured that the GROUND ADJUST is in the very farthest negative position. Once you are at the negative position, turn the GROUND ADJUST knob 1 turn clockwise or towards the positive side. This is an air test position only that will let you proceed with the rest of the Quickstart.

Perform Air Test in ALL MET Mode

Once you have set the GROUND ADJUST for the Quickstart, you are ready to perform an air test in the ALL MET Mode. You will notice that there are two ALL MET positions – ALL MET FAST and ALL MET SLOW. These positions refer to the speed at which your threshold tone retunes itself. The ALL MET FAST should retune in about 1 to 2 seconds after a target response, whereas the ALL MET SLOW may take 4 to 6 seconds to retune.

Leave your detector in the ALL MET FAST position and wave any of your test targets 2 to 3 inches in front of the coil. Notice that you will have a positive response as the target passes the center of the coil and that the signal will fade away to silence after the target is past the coil. The threshold tone should come back in 1 to 2 seconds. Now move the TUNE SPEED switch into the ALL MET SLOW and try waving your targets again. You should notice a very distinct difference in the amount of time that it takes for the threshold to retune. ALL MET FAST will be used most often to quickly pinpoint targets. ALL MET SLOW is used to pinpoint deep or small targets that do not create much of an audio signal or for tracing the outlines of large targets.

Please return your TUNE SPEED switch to the ALL MET FAST before continuing with the Tiger Shark Quickstart.

Check and Set the Internal Controls

There are three controls that are located on the inside of the detector. The Volume control, the Sensitivity control and the Threshold control. All of these controls have been set at the factory for optimum performance in most conditions. However, if there is some need to fine tune these controls, you will need to open the waterproof case to perform the adjustments. We recommend that you do this on a clean dry surface (a clean beach towel that is spread out will do fine). When you are done with the adjustments, visually inspect both the control box and faceplate making sure that no sand or other contaminants have gotten onto the O-ring as it may cause leaks.

When you open the detector case, it will release the batteries from the contacts and cause the detector to stop functioning. While you are making adjustments, it will be necessary to place a slight pressure on the battery pack to make the detector work. When you reconnect the batteries to the contacts, the automatic battery test will be heard. Once the case is open, reach over the top of the detector with your left hand (or right if you are left-handed) and gently press the batteries onto the contacts. Use your fine jeweler’s screwdriver to adjust the potentiometers inside the case.

If you would like to set the internal controls, please continue with this section of the Quickstart. If you would prefer not to set the internal controls, please switch the TUNE SPEED to MOTION DISC and skip down to the section marked “Perform Air Test in MOTION DISC Mode.”

Setting the Volume control: The Volume control is the only potentiometer that is located on the printed circuit board. To adjust your Volume control, open the case and put a slight pressure on the battery pack. After you hear the battery test you will be able to adjust the volume that you hear in the headphones to a comfortable level. Use your screwdriver and turn the potentiometer clockwise for more volume and counterclockwise for less volume. Take some time and find the most comfortable level for you.

Setting the Threshold control: The Threshold control is located on the back of the faceplate/switch set and is the potentiometer closest to the edge of the faceplate. As explained in the “Perform Audio Battery Test” section, the threshold is a slight steady tone that is used as a reference point to judge targets by. Some targets may be small enough or deep enough that they will not be able to generate an audio signal by themselves. By monitoring a threshold, you already have a signal so changes in that signal will be easier to hear. However, if the threshold is set too loud or too soft, small changes in the signal will be hard to hear. To adjust your Threshold level, open the case and put a slight pressure on the battery pack. After the battery test, use your screwdriver to turn the potentiometer clockwise to increase the threshold tone and counterclockwise to decrease the threshold tone. Take some time to find the best threshold tone for you.

Setting the Sensitivity control: The Sensitivity control is on the back of the faceplate/switch set and is the closest to the center of the faceplate. To set the Sensitivity control, you must first switch to MOTION DISC. The Discriminate circuit uses a silent search mode meaning that no sound will be heard until the coil goes over a target. The most common use of the detector will be to hunt in the MOTION DISC Mode and then switch to an ALL MET Mode to pinpoint a target. This will give you the advantage of ignoring unwanted targets and not having to listen to the threshold hum until you are ready to recover a target.

The ALL MET circuit uses a single channel to detect various metals. The MOTION DISC circuit uses two different channels, then amplifies and filters the signals, and then compares the two to determine whether or not to beep at a target. While this is a great advantage for ignoring unwanted targets, it can make the circuitry more susceptible to interference. A number of outside conditions such as power lines, highly mineralized soil and wet salt sand can cause interference. The Sensitivity control is used to raise or lower the power to the operational amplifiers, which changes the gain. Gain is the measurement of how much a signal is amplified. The higher the gain, the more depth and sensitivity to small objects a detector has. Unfortunately, any small interference that is amplified can cause the detector to become erratic. The Sensitivity control is used to find the best gain setting in any location without letting the detector become unstable.

Turn the TUNE SPEED switch from ALL MET FAST to MOTION DISC. With the case open, place a slight pressure on the battery pack and wait for the battery test to finish. When the battery test is done, you will not hear any sounds in your headphones until you pass a target in front of the coil. Using your screwdriver turn the potentiometer clockwise to increase the gain and counterclockwise to decrease the gain. Take some time to try waving targets in front of the coil with different sensitivity settings. Notice that with a higher sensitivity setting, the farther away from the coil a target can be and still get a response. Please note that your detector will probably “chatter” at maximum sensitivity. This is normal and will not hurt your detector. The best setting is to set the Sensitivity control to a point just before the detector starts to chatter.

Perform Air Test in MOTION DISC Mode

As discussed before, the Discriminate Mode is used to filter unwanted targets from good targets. The principle behind this is pretty simple. The detector sends out a signal and then receives it back creating a small electronic field. As metal passes through the field that the detector generates, it causes a change in the received signal. The amount of change that each type of metal causes is fairly constant; therefore, we can tune our detectors to miss the targets that we don’t want to find. The change is based on the type of conductivity that each target has. The general list of targets is as follows: iron, foil, nickels, gold jewelry, pull tabs, screw caps, pennies and silver coins – starting with dimes and working up to silver dollars. This list is meant to be a guide only. There is a point that some gold rings and some pull tabs overlap. Also, the depth of the target and its orientation in the ground can change the received signal. A coin that is flat to the coil will produce a better signal than a coin that is on edge. Take some time now to try different combinations of depth and orientation of your targets and find out how your detector responds.

We are now ready to discriminate targets from each other. We will start with the DISC LEVEL at zero. Wave the targets one at a time at least 2 1/2 inches away from the coil. All four targets (the iron, nickel, pull tab and quarter) will respond with a good audio signal. Next, we will turn the DISC LEVEL up to approximately 3 or 4 (2 or 3 in the SALT Mode). This should be high enough to knock out the iron target and still get a positive response on the nickel, pull tab, and quarter. When you are done with the iron target, turn the DISC LEVEL to approximately 6 or 7 (4 or 5 in the SALT Mode). This level is high enough to knock out the nickel. At this time the iron target and the nickel should give no response, while the pull tab and quarter will give a solid response. Next, turn the DISC LEVEL to approximately 7 1/2 or 8 1/2 (7 or 8 in the SALT Mode). At this time only the quarter should respond with an audio signal. Now roll the DISC LEVEL all the way to MAX. Notice that the quarter is still responding. The discrimination will not go high enough to lose most silver coins.

This air test was designed to show you how the MOTION DISC Mode works. Each machine may be a little different than all the others, so you may want to take some time and try different targets to find the responses of your machine. At a later date, you may also build a test garden to test your detector in the field.

CONGRATULATIONS

Congratulations, you have just finished the Quickstart for your new Tiger Shark metal detector and in the process have learned quite a lot about your detector. But experience is the best teacher. I would recommend that you get out and practice with your detector as much as possible. Any time spent using your detector will give you valuable experience.

 


Ground Balancing Your Tiger Shark

Now that we have gone through the Quickstart, you are now ready to take your Tiger Shark out and learn how to ground balance. (Note: If you have not gone through the Tiger Shark Quickstart, it is strongly recommended that you do so before ground balancing your Tiger Shark.)

Ground balancing is a simple but very important skill that you must master to get the most out of your detector. The Tiger Shark has controls that will allow you to tune the detector to the exact ground matrix that you are hunting in. Finding and maintaining the exact tune or balance will give you the highest possible depth and stability for your conditions. Once you have read through this section, it is most important that you get out and practice your ground balancing skills as often as possible.

To start, find an area that is free of metal targets. If your coil is over any targets, it will always give a positive signal and it will be impossible to correctly ground balance your detector. Start with your Tiger Shark in the ALL MET FAST position. (You can use the ALL MET SLOW position, but it will take a little longer to do your ground balance.) At this time, it will not matter where your GROUND ADJUST knob is set. Place your DISC LEVEL at MIN and switch the MODE switch to NORM. After the battery test is done, you are ready to begin the ground balance procedure. (Note: Unless you are on a wet salt beach, do not use the SALT Mode. It will not ground balance to normal conditions. The SALT Mode is to be used only on a wet salt beach.)

Lift your detector straight off of the ground about 6 to 8 inches. Keep the coil parallel to the ground. At that height, your detector will not be affected by the ground mineralization. As you lower the coil, the detector will read the ground matrix and let you know how to adjust to achieve aground balance. (Note: You must lift your coil straight up. Do not swing it like a pendulum.) Once you have got a steady threshold, quickly lower the coil straight down to approximately 1 inch off of the ground and listen to any change that may occur in the threshold. You will hear one of three sounds: 1) the threshold will get louder or go positive 2) the threshold will go quiet or become negative, or 3) the threshold will stay the same.

If the threshold stays the same, the detector is telling you that the ground matrix is not affecting it and you are ready to hunt.

If you get a positive or negative signal, the machine is telling you that it is being affected by the ground matrix and must be adjusted for peak performance.

If your threshold goes positive, you must turn the GROUND ADJUST knob counterclockwise or towards the negative side.

If your threshold goes negative, you must turn the GROUND ADJUST knob clockwise or towards the positive side.

Once you have made an adjustment, lift the coil up, let the threshold retune and push the coil down again while listening for any sound change as the coil drops. If there is a threshold change, follow the above directions and repeat until you have very little or no threshold changes on the way down. A very slight positive response is better than any kind of negative response.

If there are threshold changes on the upstroke do not pay attention to them. As you raise the coil, the detector goes from a ground matrix (soil) to no ground matrix (air) and that difference will most likely cause some change in the threshold tone. Only changes on the downstroke are to be adjusted for.

Now that your detector is ground balanced, you are ready to hunt. You can stay in either of the ALL MET Modes or switch into the MOTION DISC. Whichever mode you choose to hunt in, it is always necessary to ground balance in an ALL MET Mode first.

Just like any skill, ground balancing must be practiced constantly. The easiest place to do it is in your backyard or any place close that has at least a 10 foot by 10 foot area. First, check for any metal targets and remove them. When the area is clean, take your Tiger Shark and ground balance it. When you are done, spin the GROUND ADJUST knob either positive or negative and ground balance again. Keep up this practice until you feel comfortable with ground balancing. Take some time to keep your ground balancing skills sharp and you will see better results in the field.

 


SELECTING THE RIGHT SEARCHCOIL

Selecting the right searchcoil for the type of detecting you’re doing will add greatly to your success.

In addition to the standard 8 inch open center searchcoil, two optional coil sizes are available for the Tiger Shark. The 10 1/ 2 inch open center coil is designed for areas where digging is easier and where junk targets may not be too numerous. The 7 inch coil will be particularly useful when searching for smaller targets, such as gold nuggets.

 


PINPOINTING

The sweep speed of the detector is slow enough to allow pinpointing in the Motion Discriminate Mode but will require a little more practice. Move the coil slowly from side to side and then from front to back over the target. Raising the coil slightly and slowing the sweep speed will narrow down the detection area enough that it’s easy to tell where the coil center is at the instant of sound.

Another easy method is to sweep the coil from side to side across the target in very short sweeps as you slowly move forward and backward across the target. Slow down the sweep rate and shorten the sweeps until you just barely get a response at one spot. The target will be directly below the coil center at this response time.

The easiest way to pinpoint for most people will be to switch to the ALL METAL Mode, since no-motion is required. To pinpoint a target that doesn’t saturate the audio, just move the coil forward and back and side to side until you get the strongest sound. The target will be directly below the coil center. If the audio saturates over a large area, simply hold the coil over the target momentarily to detune the detector. This will narrow its field of response to allow you to once again seek the area of strongest response.

 


DETECTOR PROTECTION CHECKLIST

Congratulations, you have just purchased a new metal detector, and we wish to thank you for choosing Tesoro.

So many people are disappointed when their new “state-of-the-art” detector becomes less and less exciting to use and doesn’t seem to go as deep anymore. There is something that you can do to keep your new detector working as good as when it was new.

The most important thing is simply to remember that your detector is an electronic instrument and to treat it as such. You wouldn’t expect your TV set to operate properly if you stored it in the trunk of your car, would you?

We have generated the following list to help you take care of your detector and to help ensure that you do not void its warranty. If you will follow its guidelines, you will find your detector will not let you down.

  1. Operate your detector exactly as recommended in this Operator Instruction Manual.
  2. Do not attempt to modify or repair the detector’s electronics.
  3. Cable is hard-wired into searchcoil. Do not attempt removal of the spring retainer on the searchcoil housing.
  4. Use only high quality carbon-zinc, alkaline, or nicad batteries. Remove batteries during long term storage. Never substitute batteries of other voltages. Brands should not be mixed. Do not attempt to modify the power supply system.
  5. Never spray lubricants such as WD-40 or any types of cleaners, sealants or other chemical preparation on or into the detector.
  6. Avoid banging the searchcoil against rocks or foundation walls.
  7. Always protect the searchcoil with a properly designed scuff cover.
  8. Remove and clean out scuff covers periodically to avoid buildup of mineralized or metallic particles.
  9. After use, clean the detector with a soft cloth to remove any dust, moisture, or other contaminants.
  10. Do not transport or store your detector in the trunk of your car.
  11. Keep cables properly wound to stem and protected. Floppy or pinched cables may short causing erratic noises or unnecessary replacement of searchcoils.
  12. Protect the detector from dust, moisture, and extreme temperatures during storage. Avoid storing it in places such as attics, basements or garages. When shipping the detector, use the original factory carton or a similar heavy-duty container. A one inch minimum clearance of padding around the detector must be provided when shipping.
  13. Treat your detector as you would any sensitive electronic instrument. Although ruggedly constructed and designed to withstand the demands of normal treasure hunting applications, it is not intended to be improperly operated or abused.

 


SPECIFICATIONS
Operating Frequency 12.5 kHz
Searchcoil Type Round, open center concentric
Searchcoil Size 8 inch Diameter
Audio Frequency Approx. 270 Hz
Audio Output Stereo Piezo Headphones
Weight (may vary slightly) Less than 4½ lbs.
Battery Requirement (8) AA DC (alkaline)
Battery Life (typical) 10 to 20 hours
Optimum Temperature Range 30° to 100° F
Operating Modes No-Motion All Metal – (Fast & Slow Tune)
Normal Mode
Salt Mode
Silent Search Motion Discriminate
Maximum Depth Rating 200 ft.
WARRANTY SERVICE

Your Tesoro metal detector is covered by a Lifetime Warranty, the terms of which are listed below. If your metal detector should require service, you may return it to the Tesoro factory at the address below.

LIMITED LIFETIME WARRANTY

This warranty gives you specific legal rights, and you may have other rights which vary from state to state.

This instrument is warranted to be free of defects in material and workmanship as long as it is owned by the original consumer purchaser. This warranty is not transferable and is valid only if the warranty registration card has been completed and mailed within 10 days of purchase.

TESORO will, at its option, repair or replace any instrument covered by this warranty, without charge, except for transportation charges, at its factory in Prescott, Arizona.

This warranty excludes batteries, damage caused by leaky batteries, cable breakage due to flexing on body mount units, and wear of the searchcoil housing. Also excluded are instruments which have been abused, altered, or repaired by an unauthorized party.

Under the copyright laws this documentation may not be copied, photocopied, reproduced, translated or reduced to any electronic or machine-readable form, in whole or in part, without the prior written consent of Tesoro Electronics Incorporated, except in the manner described in this documentation.
© 2001 Tesoro Electronics Incorporated. All rights reserved. Printed in the United States.