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AUTOTUNE SEARCH MODE

 

    Set the DISC control to Autotune for a very sensitive, wide-scan, all-

metal, motion search mode. Since this mode responds to all metal 

targets and does not have the ability to identify or reject targets, this will 

probably not be your normal search mode. 

The Autotune mode does have some advantages however which 

make it useful to use in at least two situations:

1.

 

Non-Trashy Areas.

 Since the Autotune mode has a wider 

scan than the ID mode, you’re less likely to miss a good 

target when using it. Search in the Autotune mode until 

you find a target. Pinpoint the target using the PINPOINT 

button and then switch the DISC control to “0” to identify 

it. The DISC control is positioned so that you can switch 

back and forth between Autotune and “0”.

2.

 

Highly Mineralized Soil or Sand.

 The Autotune Mode 

is recommended for black or gray sand beaches or 

highly mineralized soil. Under these conditions it may be 

necessary to lower the sensitivity level and sweep several 

inches off the ground. Gold nuggets are generally found 

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 

the ability to identify many types of small targets and, depending on the 

discrimination level, reject or ignore most of them. To better understand 

just how your CZ-3D responds to different targets, try the following:

1.

  Scatter some sample targets such as coins, rings, pull 

tabs, nails and foil on the ground at least 18 inches apart. 

Include some large targets as well; jar lids, soda cans, 

etc.

2.

  Set the DISC control at “0”, SENSITIVITY at “5”, MODE 

at ‘ENHANCE’, VOLUME at “10”. If you’re wearing 

headphones, reduce the volume to a comfortable level 

when you are over a large target.

3.

  Ground balance the CZ-3D as in the “Ground Balance” 

procedure.

4.

  Hold the search coil about two inches above and parallel 

to the ground and move it slowly back and forth across 

each sample. Remember, the coil must be in motion to 

SEARCH MODES

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Summary of Contents for M-SCOPE CZ-3D

Page 1: ...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: ...on 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 T...

Page 3: ...ting 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...

Page 4: ...ching 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...

Page 5: ...bout 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 lo...

Page 6: ...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 fo...

Page 7: ...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...

Page 8: ...tone and a meter 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...

Page 9: ...r 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...

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...

Page 11: ...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 increa...

Page 12: ...ed by an increasing 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...

Page 13: ...ese conditions it may be necessarytolowerthesensitivitylevelandsweepseveral inchesofftheground Goldnuggetsaregenerallyfound in highly mineralized soil so this will be the search mode of choice for pro...

Page 14: ...r ring will almost always add up to a target that is electronically identical to either a pieceoffoil pulltabornickel Mostmetaldetectorshave a dif cult time separating gold rings nickels tabs and foil...

Page 15: ...cessive 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...

Page 16: ...PONSE SEARCH 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 D...

Page 17: ...ne 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...

Page 18: ...justtheheadphonevolumecontrols 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 i...

Page 19: ...et 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 un...

Page 20: ...ing over the 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 m...

Page 21: ...e Target ID mode If you re searching in Auto tune switch over to 0 on your DISC control B For accurate identi cation the center of the search coil must pass directly over the target C There are many g...

Page 22: ...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 co...

Page 23: ...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...

Page 24: ...or example if the needle is midway between the four inch and six inch marks your target is approximately ve inches deep You will quickly realize that the depth reading procedure is just like pinpointi...

Page 25: ...much until you start making a few good nds 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 shor...

Page 26: ...will nd 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 Ca...

Page 27: ...ed 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 y...

Page 28: ...unt 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 ll in your holes neatly whether you re in a city park or remote...

Page 29: ...mpartment 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 batte...

Page 30: ...Auto Tone VLF 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 wir...

Page 31: ...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 Volum...

Page 32: ...in the eld durable dependable deeper REPUTATION Dr Fisher invented the rst patented metal detector over 70 years ago Today Fisher continues to set the standard by which all detectors are judged LIFET...

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