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1.

  Once  you’ve  located  a  target,  pinpoint  its  exact 

location  as  in  the  “Pinpointing”  procedure. 

Since 

accurate ID is dependent on accurate pinpointing, it 

is recommended that you always press the PINPOINT 

button rather than try to pinpoint your target in either 

the Autotune or Target ID mode.

2.

  Once  you’ve  pinpointed  your  target,  release  the 

PINPOINT button. If you’re searching in the Autotune 

mode, switch over to DISC = 0. If you are already 

in the Target ID mode, just leave the DISC control 

where it is.

3.

  Move the coil just enough, left-right-left, across the 

target to get a good signal. The meter needle should 

lock  onto  a  target  classification,  which  in  turn  will 

agree with the audio response (one of 4 tones)

4.

  If  you  no  longer  get  a  meter  reading  or  audio 

response once you’ve pinpointed the target, then 

you’re  over  something  that  falls  below  the  DISC 

setting you’ve chosen and the CZ-3D is rejecting it.

5.

 Here’s a quick and easy way to tell the difference 

between a small shallow piece of foil and a gold 

ring (or other possibly good target) without digging: 

if you  get  a good  solid, “FOIL” ID,  set the  search 

coil  down  close  to  the  target  and  then  whip  it 

rapidly

 across the target just once with what can 

best be described as a flick of the wrist. If the target 

disappears,  it’s probably a small  shallow piece of 

foil. If not, dig it up—it could be that gold ring you’re 

looking for. Practice this over some foil until you get 

the hang of it.

6.

  Don’t be afraid to turn your sensitivity down. True, 

the higher the sensitivity, the deeper your CZ-3D will 

go and the more you’ll find. But that’s only under 

optimum conditions. If you’re getting a lot of false 

signals  caused  by  electrical  interference,  ground 

mineralization or dense trash, lower your sensitivity. If 

you have to back it down to 4, 3 or even 2 to eliminate 

the falsing, do it. That’s what your SENSITIVITY control 

is for. You’ll be surprised at how much you might find 

in an area that would otherwise be unsearchable 

at high sensitivity levels.

TARGET IDENTIFICATION

22

11

1.

 Set as in the “Turn-On” procedure, making sure the 

DISC  control    is  at  AUTOTUNE  and  the  SENSITIVITY 

control is set so you can just barely hear a threshold 

hum.  Hold  the  search  coil  parallel  to  and  6  to  12 

inches over the ground and at least three feet away 

from any metal objects. 

Do not use the PINPOINT 

button during any part of this procedure.

2.

  Lower the coil to an inch or two above the ground 

and then quickly raise it. Note that as you lower the 

coil, the tone disappears, then gets louder as you 

raise it and finally returns to normal when you stop it 

6 to 12 inches above the ground. 

Conversely, if you 

set the GROUND control to 1, the threshold hum will 

get louder as you lower the coil and disappear when 

you raise it.

3.

 Your objective now is to adjust the GROUND control so 

that there is no change, or only a minimum change 

in the threshold hum, as you move the coil up and 

down. Start by lowering the GROUND control to 9. 

Lower the coil and raise it again. One of three things 

will happen to your theshold hum:

A

 It will fade again as you lower the coil and increase 

as  you  raise  it.  Continue  to  lower  the  ground 

balance  setting  in  small  increments  until  the 

threshold hum remains the same (or changes very 

little) as the coil is lowered and raised.

B

    It will get louder as you lower the coil and go silent 

as you raise it. Increase the ground balance level 

(rotating  the  control  counterclockwise)  in  small 

increments until there is little or no change in the 

threshold level.

  The  hum  will  remain  the  same,  or  if  it  changes 

slightly, the change is the same whether you lower 

or  raise  the  coil.  Your  CZ-3D  is  properly  ground 

balanced,  and  you  are  ready  to  begin  your 

search. You have gone past the correct ground 

balance setting. 

4.

  With a little practice, you should be able to ground 

balance  quickly  by  “bobbing”  the  coil  up  and 

down in a continuous movement as you adjust the 

GROUND control with your thumb.

"BOBBING" THE SEARCH COIL METHOD

Summary of Contents for CZ-3D

Page 1: ...f CZ 3D OPERATING MANUAL Deep Search 4 Tone Target I D Metal Detector F I S H E R R E S E A R C H L A B O R A T O R Y Maximized for finding older era coins at older sites ...

Page 2: ...10 Bobbing The Search Coil Method pg 10 Search Modes pg 12 Search Modes Auto Tune pg 13 Search Modes Target ID pg 13 Searching pg 18 Pinpointing Pushbutton Pinpoint Mode pg 20 Pinpointing Target ID and Autotune Modes pg 21 Depth Reading pg 24 Target Recovery pg 25 Recovery Tools pg 26 False Signals pg 26 Maintenance pg 27 Treasure Hunters Code Of Ethics pg 28 Battery Replacement pg 29 Specificatio...

Page 3: ... 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...

Page 4: ...ing 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 search coil moving Remember you are in a motion search mode and the coil must be moving at least slightly to det...

Page 5: ... 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 o...

Page 6: ...tion 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 ...

Page 7: ...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...

Page 8: ...reading When rotated clockwise sensitivity to targets 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 ...

Page 9: ...ncing try reducing your sensitivity level or moving to another spot just in case you are over a buried piece of metal In some areas of high ground mineralization you may not be able to use the pushbutton method 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...

Page 10: ...nd 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 ...

Page 11: ...n the threshold hum as you move the coil up and down Start by lowering the GROUND control to 9 Lower the coil and raise it again One of three things will happen to your theshold hum A It will fade again as you lower the coil and increase as you raise it Continue to lower the ground balance setting in small increments until the threshold hum remains the same or changes very little as the coil is lo...

Page 12: ...easing audio response you re probably in some very highly mineralized soil or sand Instead of lowering the coil to an inch or two above the ground as in step 2 above stop just before you hear the bell tone and ground balance as instructed It will then be necessary to maintain that coil height as you search 3 lf you don t get an audio response or if the hum stays the same no matter where you set th...

Page 13: ... mineralized soil Under these conditions it may be necessarytolowerthesensitivitylevelandsweepseveral inchesofftheground Goldnuggetsaregenerallyfound in highly mineralized soil so this will be the search mode of choice for prospectors TARGET ID SEARCH MODE When the DISC control is set in the 0 through 6 position the CZ 3D has theabilitytoidentifymanytypesofsmalltargetsand dependingonthe discrimina...

Page 14: ...st always add up to a target that is electronically identical to either a pieceoffoil pulltabornickel Mostmetaldetectorshave a difficult time separating gold rings nickels tabs and foil but the patented circuitry of your CZ 3D can easily tellthedifferencebetweennickelsandmosttrash Better yet it will allow you to find many types of gold rings while completely ignoring at least some types of pull ta...

Page 15: ...ol noting that with each successive step up you reject more and more targets AtDISC 4forexample youareina coins only mode ignoring iron tabs and foil while accepting and identifyingmostnickels zincpenniesandsilver cladand copper coins 13 At the maximum DISC level of 6 the CZ 3D will ignore mostall smalltargetsexceptsilver clad zincandcopper coins 14 Now switch the DISC control to the AUTOTUNE posi...

Page 16: ...CH COIL 5 1 ZINC PENNY COPPER PENNY SILVER OR CLAD COIN SHALLOW CAN 1 5 zn 1 zn AUDIO RESPONSE 1 LOW TONE SMALL NAIL SODA GOLD RINGS STEEL BOTTLE CAP BELL TONE 4 HI TONE 3MIDLO 2 MID 2 MID DISC SETTING IRON 0 AUTO TUNE 1 2 3 4 5 6 FOIL IRON METER READING SMOOTH BROAD RESPONSE FOIL d M N m o a v p H S S ...

Page 17: ...one Buffalo Nickel mild corrosion Trash mid tone High Tone 2 50 Gold Quarter Eagle Round Tab mid tone Square Tab 5 00 Gold Half Eagle Trash mid tone High Tone 10 00 Gold Eagle High Tone High Tone 20 00 Gold Double Eagle High Tone High Tone Many Non U S Coins Trash mid tone High Tone Noteworthy The older nickels that would previously read as a mid tone foil ID should now read as a high tone nickel ...

Page 18: ...theheadphonevolumecontrols for a comfortable not too loud response over loud targets 5 Once you ve got your controls properly set begin your search by walking slowly and sweeping the search coil in a tight semicircle 6 Keep the coil parallel to the ground and as close to the ground as practical This is extremely important for maximum coverage and depth If you re searching on a lawn you may set the...

Page 19: ... sweep speed b Discrimination set at 6 2 Good Depth a Moderate sweep speed b Discrimination set at 4 3 Maximum Depth a Moderate sweep speed b Discrimination set at 0 4 Missed Target Many targets within range will not be detected unless you closely overlap your sweeps 4 1 2 3 Figure 7 SEARCH COIL DETECTION PATTERN SEARCHING Figure 5 SEARCH PATTERN When the stem length is properly adjusted the CZ 3D...

Page 20: ...he strongest response 4 Repeat one more time side to side and then front to back keeping the PINPOINT button pushed in and stopping over the spot where you get the maximum volume pitch and meter reading Your target should be directly below the center of your search coil With a little practice you ll find that you don t even need to look at the meter unless you want a depth reading NOTE For quick a...

Page 21: ...must be in the Target ID mode If you re searching in Auto tune switch over to 0 on your DISC control B For accurate identification the center of the search coil must pass directly over the target C There are many good targets which are not classified by the CZ 3D As mentioned earlier gold rings for example may fall in just about any category except iron Gold nuggets depending on their size and sha...

Page 22: ...re s a quick and easy way to tell the difference between a small shallow piece of foil and a gold ring or other possibly good target without digging if you get a good solid FOIL ID set the search coil down close to the target and then whip it rapidly across the target just once with what can best be described as a flick of the wrist If the target disappears it s probably a small shallow piece of f...

Page 23: ...a good beep but can t repeat it when you go back over the target area or if it beeps in only one sweep direction it s probably a piece of trash something below your discrimination setting 9 If you re in a relatively non trashy area try searching in the Autotune mode and then identify your targets by switching to DISC 0 You ll find more and deeper targets this way 10 If you re having any difficulty...

Page 24: ...e needle is midway between the four inch and six inch marks your target is approximately five inches deep You will quickly realize that the depth reading procedure is just like pinpointing however there is one very important difference When pinpointing where or when you press the pinpoint button is not real critical It is often desirable to detune your target by pressing the button when the search...

Page 25: ... your sweeps as much until you start making a few good finds Then slow down overlap your sweeps and cover every inch of ground 3 In trashy areas to reduce the masking effects of trash on nearby good targets use a shorter and slower sweep pattern Also the optional smaller 5 inch search coil will zero in on good targets closer to trash 4 When in doubt dig If your CZ 3D can t quite decide whether a t...

Page 26: ...ill find that crossing over the target once or twice more the signal will break up or completely disappear The following are some sources of false signals and the solution 1 Electrical Interference Caused by radio and TV towers power lines or other metal detectors SOLUTION Move farther away from the source slow down the sweep speed or lower the sensitivity 2 Highly Mineralized Soil Soils with a hi...

Page 27: ...s out Acid damage caused by leaking batteries can be severe 2 Avoid extreme temperatures Don t leave it inside a closed car sitting in the sun or even worse the trunk of a car 3 If you scrub the search coil on the ground you ll eventually wear through the bottom of the coil Replacement coils are expensive Instead invest in a coil cover They re cheap 4 Keep your CZ 3D dry and clean If you ve been w...

Page 28: ...on private property ALWAYS leave a site cleaner than you found it Take at least some trash with you or if you can take it all ALWAYS fill in your holes neatly whether you re in a city park or remote wildernessness Leave the land as it was before you disturbed it ALWAYS obey all laws relating to treasure hunting ALWAYS return valuable property if you can locate the original owner ALWAYS do whatever...

Page 29: ...ies are located in a compartment at the rear of the housing Always replace both batteries at the same time You may also use rechargeable Nicads but expect about 1 2 the battery life of an alkaline battery 1 Remove the battery door by loosening the two captive screws 2 Tilt the housing slightly and the batteries will slide out 3 Install the new batteries Make sure the contact end goes in first and ...

Page 30: ... Motion 6 all metal with threshold tone Target ID VLF Slow Motion 6 silent search discrimination Meter Lock on 7 categories PINPOINT DEPTH VLF all metal no motion BATTERIES Drop in no wires Yes Type Two 9 Volt Alkaline 7 Life 10 20 hours 2 SPECIAL FEATURES Manual Ground Adjust Yes Manual Threshold Tuning Auto tune mode only Wet Sand Operation Yes 8 Handle Mount Hip Mount Yes Audio Output Jack Ster...

Page 31: ...ID modes The search coil must be moving at least slightly to detect a target 7 For maximum performance and battery life always use Alkaline Batteries 8 Compensates for salt water and sand minerals simultaneously 9 Volume control limits loud target response amplifies faint targets when level is set above 5 10 ESI Electro Static Insulated to eliminate certain types of false signals SPECIFICATIONS SE...

Page 32: ...PUTATION Dr Fisher invented the first patented metal detector over 70 years ago Today Fisher continues to set the standard by which all detectors are judged 2 YEAR LIMITED WARRANTY Fisher believes in the products we produce and backs this belief with a 2 Year Limited Warranty Warranty may vary outside of the United States See your dealer for details SERVICE Fisher is committed to providing you our...

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