Tesoro TEJON Instructions de montage

TEJÓN 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.

Good Hunting! Jack Gifford

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.

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.

6. 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.

7. 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.

8. 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.

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