CZ-3D
Deep Search, 4-Tone, Target I.D. Metal Detector
Maximized
for finding older era |
coins |
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at older sites! |
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OPERATING MANUAL
FISHER RESEARCH LABORATORY
CONTENTS
About Your Detector ................................................................ |
pg. 1 |
Condensed Operating Instructions ........................................ |
pg. 2 |
Factory Preset “Turn-On-And-Go” Marks .............................. |
pg. 2 |
Setting Up .................................................................................. |
pg. 3 |
Hipmounting ............................................................................. |
pg. 5 |
Control Panel ............................................................................ |
pg. 5 |
Turn-On Procedure................................................................... |
pg. 7 |
Ground Balancing.................................................................... |
pg. 7 |
Pushbutton Method .................................................................. |
pg. 8 |
“Bobbing” The Search Coil Method ....................................... |
pg. 8 |
Search Modes........................................................................... |
pg. 10 |
Search Modes: Auto Tune ....................................................... |
pg. 11 |
Search Modes: Target ID ........................................................ |
pg. 11 |
Searching.................................................................................. |
pg. 16 |
Pinpointing: Pushbutton Pinpoint Mode.................................. |
pg. 18 |
Pinpointing: Target ID and Autotune Modes.......................... |
pg. 19 |
Depth Reading.......................................................................... |
pg. 22 |
Target Recovery ....................................................................... |
pg. 23 |
Recovery Tools.......................................................................... |
pg. 24 |
False Signals.............................................................................. |
pg. 24 |
Maintenance ............................................................................ |
pg. 25 |
Treasure Hunters’ Code Of Ethics............................................ |
pg. 26 |
Battery Replacement............................................................... |
pg. 27 |
Specifications ........................................................................... |
pg. 28 |
ABOUT YOUR DETECTOR
Your CZ-3D is an extremely advanced and sophisticated instrument. It is maximized for a very specific function - finding & properly identifying older era coins at older sites. Simply select the "enhance mode" with the utilization of the "salt/ enhance" switch to find more rare coins!
The CZ-3D was designed to find more good metals such as brass, bronze, copper, silver, and certain gold: reporting it as a high tone. In addition, a fourth tone has been added to distinguish between the midtone heard on round & square "pull tabs" and foil - this enhances your ability to recover gold jewelry.
With this detector, performance and ID can be further enhanced by a slower coil sweep speed, more so than previous CZ models, especially in trashy areas.
Read this instruction manual thoroughly, practice often and you will be ready for some exciting treasure hunting. Drop us a line if you have any questions, comments or good finds to tell us about. In the meantime...
Happy Hunting!
Fisher Research Laboratory
1 
CONDENSED OPERATING INSTRUCTIONS
FACTORY PRE-SET “TURN-ON-AND-GO” MARKS
Your CZ-3D is fairly simple to operate, especially when compared to other target ID machines. Even so, we strongly recommend that you read this entire manual. You’ll be able to tune your CZ-3D to your specific needs and conditions. A good understanding what to do and why will lead you to more finds.
If you can’t wait any longer, and you’re an experienced detector user, here’s some quick instructions to get you going:
1. Set all the controls to the red numbered
“Turn-On-And-Go” marks:
GROUND = 5 DISC = 4 SENSITIVITY = 3 MODE = ENHANCE VOLUME = 5
This puts you in a “coins-only” mode and you’re ready to start searching. Keep in mind that the GROUND setting of 5 is probably not the optimum setting for the ground you’re searching and that’s why the sensitivity level is set low—to reduce false signals caused by ground mineralization.
2.If you’re using headphones, adjust the volume controls for a comfortable volume when the coil is passed over a large shallow object.
3. Walk slowly, overlap your sweeps and keep the searchcoilmoving.Rememberyouareina“motion” search mode and the coil must be moving at least slightly to detect a target.
4.When you get a good, repeatable signal, pinpoint the target by placing the coil on the ground away from the target, pushing and holding the pinpoint button and then bringing the coil back over the target.
5.Once you’ve pinpointed the target, note the approximate depth reading on the meter, then identify it by releasing the pinpoint button and moving the coil side to side in short strokes over the target. The meter needle will lock onto the appropriate target classification.
6.Happy Hunting!
2 
SETTING UP
Drop-in battery compartments |
Adjustable |
8-inch Spider |
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and cable connector at rear of |
non-metallic |
search coil |
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housing(not shown) |
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lower stem |
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Removable control |
Center |
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section |
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housing (belt loop on |
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underside of housing) |
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Foam hand grip |
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Nylon wing nut |
Padded arm rest |
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(replacable |
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Upper |
Lower |
Duro-Neoprene |
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lock nut |
bushings, not |
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lock nut |
shown) |
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Seven foot |
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search coil |
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cable |
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Upper stem |
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Built-in detector stand |
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Figure 1. FISHER CZ-3D |
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The CZ-3D comes to you just about ready to use. Take a look at the diagram above and familiarize yourself with the parts of the CZ-3D before proceeding.
1.Unpack your new CZ-3D carefully. Save the carton and inserts for future storage or shipment.
2.Take a look inside the locknut on the upper stem. Note the clear plastic locking pad on the left hand side and loosen the lock nut by rotating it fully counterclockwise.
3.Slip the lower stem into the center section.
4.Adjust the stem length (using the guide pin & stem lock nut) and the coil angle (using the nylon wing nut) so the search coil rests flat on the ground about 6 inches in front of, and slightly to the right of your right foot, (to the left of your left foot for left handers). Your arm should be straight and relaxed, with the
grip held loosely.
REMEMBER: The longer the shaft, the more you will have to bend your elbow and the sooner your arm will get tired. The CZ-3D is balanced for comfortable searching in a tight semicircle around the front of the operator. 3
SETTING UP
5.With the stem length properly adjusted, wrap the loop cable tightly around the center section stem and secure it with the two Velcro straps. Connect
the cable connector to the control housing.
CAUTION: Make sure that the cable is not pulled tight at the control housing and that you have enough slack at the search coil to adjust it to any angle.
6.With the shaft length and coil angle properly adjusted, you should be able to move into your “search” position (as shown in illustration below) by leaning forward very slightly and raising your arm (still straight) until the search coil is about 2 inches above the ground and 12 inches in front of your foot. The search coil should be parallel to the ground and may have to be slightly readjusted at this point.
Figure 2. SEARCH POSITION.
Adjust the stem length and coil angle so the coil rests flat on the ground about 6 to 12 inches in front of your foot. Move into your “search” position by leaning forward slightly and raising the coil about 2 inches off the ground. This should put the search coil out about 12 to 18 inches in front of your foot.
4 
HIPMOUNTING
1.Disconnect the cable from the control housing and unwind all but the last twelve inches from the stem. Secure the lower end of the cable with a Velcro strap at least twelve inches up from the coil.
2.Slide the control housing off the handle by holding the handgrip with one hand and pulling the housing towards you with the other hand.
3.Reconnect the cable to the control housing. It is especially important that the cable connector be installed tightly to prevent false signals during hipmount use. Tight, but never tightened with anything but your hands.
4.Put your belt through the slots on the underside of the housing.
5.Left handers should wear the housing on their right
hip and right handers on their left hip.
NOTE: If you’re working in shallow wateryou may want to hang the control housing around your neck or chestmount with Fisher’s Chest Harness. Just make sure you put it in a heavy plastic bag sealed tightly around the cable. Remember, the only thing waterproof about the CZ-3D is the search coil.
CONTROL PANEL
1.GROUND: Used to electronically cancel the effects of ground mineralization. Proper use of this control will minimize false ground signals and insure that the CZ-3D is operating at its maximum potential in just about any ground condition including wet ocean sand.
2.DISC: In the 0 through 6 position the CZ-3D is in the target ID mode, which is a silent, no-threshold, motion-discrimination mode of operation with the abilitytoidentifyandthenignore(“reject”)oraccept many kinds of small metal targets. In the AUTOTUNE position, the CZ-3D is in an all-metal mode. In this mode, the CZ-3D has a wider and deeper search pattern, however, it lacks the ability to discriminate
5 
CONTROL PANEL 
or identify targets.
3.PINPOINT/DEPTH READING: A three purpose, spring loaded push-button. When pushed and held, the CZ-3D goes into a no-motion, all-metal mode for precise pinpointing and approximate depth reading of coin-sized targets. This button is also used in conjunction with the GROUND control during the ground balancing procedure.
4.SENSITIVITY/BATT TEST: In the extreme counterclockwise position, the battery condition is checked as indicated by a strong or weak tone and a meter reading.Whenrotatedclockwise,sensitivitytotargets (as well as ground mineralization and electrical interference) is increased. When in the AUTOTUNE mode, this control also acts as a “threshold tone” control.
5.HEADPHONES: This connector accepts most stereo headphones.
6.MODE: ENHANCE position for dry land or shallow fresh water hunting. SALT position for wet-sand ocean beaches or hunting in shallow surf.
7.VOLUME/OFF: Power on-off and volume control. Volumeisgraduallyincreasedfrom1to5settings.From 5to10,loudtargetresponseisheldconstantwhilefaint targets continue to get louder (audio boost).
Figure 3, CONTROL PANEL
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TURN ON PROCEDURE
1. Set your controls as follows:
GROUND = 10
DISC = 0 for normal use in target ID mode. (Set DISC to “Auto tune” for deep search, all-metal Auto tune
mode.
SENSITIVITY = 10
MODE =ENHANCE
VOLUME = OFF
2.Hold the search coil waist high, away from any nearby metal.
3.Turn the VOLUME control to 10. A brief bell tone is
normal when you turn the VOLUME control on.
If you’re in the Auto tune Mode, you’ll hear an audio “threshold” hum. Lower the SENSITIVITY control until you can just barely hear it.
4.If you’re wearing headphones, reduce the headphone volume controls to a comfortable level when the search coil is passed over a large, shallow target.
GROUND BALANCING
When your CZ-3D is properly “ground balanced,” it will have only a minimum response to ground mineralization. Precise adjustment of the ground control is critical. The higher the degree of ground mineralization or sensitivity setting, the more critical it is. Once you adjust it in either the Autotune mode or Target ID mode, you can switch back and forth between the two modes without resetting it, unless you increase the sensitivity level or go from dry sand to wet sand or vice versa. You should also recheck your setting occasionally as you search since ground conditions often change rapidly.
If you have difficulty ground balancing, try reducing your sensitivity level or moving to another spot just in case you are over a buried pieceofmetal.Insomeareasofhighgroundmineralizationyoumay not be able to use the “pushbutton” method.
7 
“PUSHBUTTON” GROUND BALANCE METHOD
This will probably be your method of choice in all but the most difficult of ground conditions. It’s fast, easy and accurate. You can use this method in either the Autotune or Target ID mode.
1.With your controls set as in the “Turn-On” procedure, (GROUND control at 10), hold the search coil parallel to and 6 to 12 inches off the ground. Press the PINPOINT button and hold it until you’ve completed step 2. Make sure you’re at least three feet away from any metal objects.
2.Still pressing the PINPOINT button, lower the coil to the ground. Starting at 10, rotate the GROUND control clockwise until you hear an audio tone. Then back it off to the exact point where the tone disappears. Release the PINPOINT button and you’re ready to search.
NOTES:
1. If you get an audio response as you first lower the coil with the GROUND control at 10, you’re probably over a piece of metal. Move and try again.
2. If you get a sudden belltone not proceeded by an increasing audio response as you lower the coil, you’re probably in some very highly mineralized soil or sand. In this case, it’s best to use the “Bobbing” method.
3. If you don’t get any audio response, or just a very faint one as you rotate the GROUND control from 10 all the way to 0, you’re probably in an area where there’s very little ground mineralization. Just leave the GROUND control at 10 and begin searching.
4. Recheck your ground balance occasionally and make sure you haven’t accidentally moved the MODE switch.
“BOBBING” THE SEARCH COIL METHOD
This method takes a little more practice, but you may find it slightly more accurate with fewer false signals from ground minerals.
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