Fisher M-Scope CZ-5 Quicksilver User manual

CZ-5 Quicksilver
Operating Manual
Deep Search, Target I.D. Metal Detector with dual
Fourier Domain Signal Analysis
FISHER RESEARCH LABORATORY

CONTENTS
About Your CZ-5 Quicksilver.................................................pg. 1
Condensed Operating Instructions ......................................pg. 4
Factory Preset “Turn-On-And-Go” Marks ........................pg. 4
Setting Up.................................................................................pg. 5
Hipmounting............................................................................ pg. 7
Control Panel ..........................................................................pg. 7
Turn-On Procedure.................................................................pg. 9
Ground Balancing..................................................................pg. 9
Pushbutton Method.............................................................pg. 10
“Bobbing” The Search Coil Method ................................pg. 11
Search Modes.........................................................................pg. 12
Auto Tune .............................................................................pg. 12
Target ID...............................................................................pg. 13
Searching ................................................................................pg. 17
Pinpointing...............................................................................pg. 20
Pushbutton Pinpoint Mode.....................................................pg. 20
Target ID and Autotune Modes.............................................pg. 21
Target Identification ............................................................... pg. 22
Depth Reading........................................................................pg. 23
Target Recovery .....................................................................pg. 24
Recovery Tools .......................................................................pg. 25
False Signals ............................................................................ pg. 25
Operating Tips.........................................................................pg. 29
Battery Replacement.............................................................pg. 32
Maintenance ..........................................................................pg. 33
Treasure Hunter’s Code Of Ethics..........................................pg. 34
Where To Use Your Metal Detector In The U.S.....................pg. 35
Specifications .........................................................................pg. 36

ABOUT YOUR DETECTOR
Your CZ-5 Quicksilver is an extremely advanced and sophisticated
instrument.
VISUAL TARGET IDENTIFICATION. An easy-to-read meter
displayssevensmall-targetcategories.Silverandgoldbands
across the top indicate the most likely categories for small
gold and silver targets. When the dual frequency CZ-5
classificationcircuitrymakes identification, the needle locks
over the center of the appropriate category. If ID is difficult
due to irregular size, conductivity or depth, the CZ-5 will
alert you to this by jumping back and forth between the
most likely categories. What it will never do is lock-on
between categories or gives you a series of numbers to
interpret. No programming, no razzle-dazzle, no nonsense.
AUDIO TARGET IDENTIFICATION. A low tone means a ferrous
or iron target: a medium tone indicates a pull-tab or foil;
and a high tone means you’ve probably found a coin. The
tone ID always agrees with the meter ID. If the audio
response tone is low, the meter will always read “iron” and
if the tone is high, the meter will always read in one of the
coin categories.
PUSHBUTTON DEPTH READING, VCO PINPOINTING. Just push
a button and the volume, pitch and meter needle will rise
as you approach your target and then peak right over it.
Themetergives you a depth readingininchesforcoin-sized
objects.
WET SAND OPERATION. Salt water is no problem for the CZ-
5. Just flip a switch, reset your ground control and search
that wet sand you never could before, in fact you can
submerge the coil in salt water and search as though it
wasn’t even there. The CZ-5 compensates for salt and sand
simultaneously.
TARGET SEPARATION. It’s a sad but true fact that most gold
rings,pulltabs,foilandnickelsfallintothesameconductivity
range, meaning that a detector user has to dig a lot of
trash to find any rings or nickels. But not any more. The CZ-5
not only separates the nickels from the trash, but the tabs
from the tabs. It has a separate ID and discrimination
categoriesforround pull tabs, rectangular pulltabs,foiland
nickels. Rather than a complicated “notch” system, the
individual categories are sequentially arranged to insure
maximum good target recovery, In a moderately trashy
area for example, you can set the CZ-5 to reject iron and
1

ABOUT YOUR DETECTOR
2
round pull tabs and still dig nickels and other coins and all
gold rings falling into the nickel, foil and rectangular tab
and nickel categories.
BIG TARGET ALERT. Large shallow (like a jar lid or a beer
can) overload metal detector curcuits making accurate
target ID or trash rejection impossible. But not with the
CZ-5. Whenever it passes over a large shallow target, a
distictive bell-tone immediately warns you that the target is
too large to identify.
DEPTH. Target identification in air is easly for just about any
ID metal detector. But the CZ-5 does it in the ground and
doesitdeeper.ThankstothepatentedFourierDomainSignal
Analysis System, the CZ-5 can identify deeper targets in
mineralized soil. Two VLF ground compensation signals are
transmitted (one at 5KHz, one at 15 KHz), giving the circuitry
two ground compensated target response signals to
analyze, compare and identify.
SILENT SEARCH, SLOW MOTION DISCRIMINATION. No
threshold, no clicking, no popping, no static. Once you set
the CZ-5 discrimination control to one of its six factory
calibratedlock-ondiscriminationpoints, theaudioandvisual
targetidentificationcurcuitswillcompletelyignoreeverything
identifiedasbelonginginacategorybelowthatdiscrimination
point. For example, a setting of “4” tunes out iron, pull tabs
and foil. As long as you’re at this discrimination point you’ll
never hear the low “iron” tone or the medium tone of pull-
tabs and foil. And since the discrimination categories are
exactlythesameasthemetercategories,themeterwillnever
ID iron, pull tabs or foil as long as you remain at “4”. Any false
signal you do hear or see will be in the “coins” category only
because the CZ-5 couldn’t positively identify the target as
iron, foil or a pull-tab.
AUDIO BOOST VOLUME CONTROL. The lower range of this
volume control is like any other you’ve ever used. But as
you increase it above mid-range, loud, shallow target
responseremains at a fixedvolumewhilefaint, deep target
sounds continue to get louder.
PUSHBUTTON MANUAL GROUND ADJUST. It’snosecretthat a
metal detector will perform its very best when manually
tunedforactualon-sitegroundconditions. The onlyproblem
is that manual adjustments have always been confusing,
complicated and time consuming. But not with the CZ-5.
Just push the PINPOINT button and lower the coil to the

3
ground.ThensettheGROUNDcontroljustbelowathreshold
tone and you’re ready to search.
EASY TO USE. Just pick it up, set the controls on the red
marksandstartsearchingina“coinsonly”mode.Itcouldn’t
be simpler. Or for a maximum performance you can easily
adjust the controls to your own particular situation.
SPIDER COIL. The eight-inch, open center Spider coil makes
pinpointingeveneasier.It’slightweight,tough,Electro-Static
Insulated (E.S.I. Shielded) and 100% waterproof.
TWO SEARCH MODES. A VLF-slow-motion discrimination
mode for target identification and trash rejection. And a
super hot, wide-scan auto tune mode for deep search all-
metal treasure hunting and prospecting.
DROP-IN BATTERIES. No wires, no clips, no battery packs.
Just drop in two 9V transistor batteries.
COMPACT. The CZ-5 breaks down and fits into an optional
carrying case small enough to carry on most airlines.
HIP MOUNTABLE. Just slide the control housing off the shaft
and onto your belt. What’s left is so light it will feel like a
part of your arm.
DOUBLE LOCKING NON-METALIC LOWER POLE. No shake no
wobbles. No “lock-ring” to lose and no metal parts near
the search coil.
LIGHTWEIGHT, BALANCED AND COMFORTABLE. Only three
and 1/2 pounds light with a cushioned arm rest, foam grip,
“S” handle and built-in detector stand.
Read this instruction manual thoroughly, practice often and you’re in
forsomeexcitingtreasurehunting.Dropusalineifyouhaveanyquestions,
comments or good finds to tell us about. In the meantime...
HappyHunting!
FisherResearchLaboratory
ABOUT YOUR DETECTOR

FACTORY PRE-SET TURN-ON-AND-GO’ MARKS
Your CZ-5 QuickSilver 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-5 to your specific needs and conditions. And if you have a
good understanding of how to do it and why, you’ll find more.
But if you just 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 “Turn-On-And-Go” marks:
GROUND = 5
DISC = 4
SENSITIVITY = 2
MODE = NORMAL
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
search coil moving. Remember you are in a “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. Good Hunting.
CONDENSED OPERATING INSTRUCTIONS
4

5
SETTING UP
TheCZ-5comestoyoujustaboutreadytouse.Theonlyadjustment
required is the angle of the stem. You may also wish to adjust the
widthofthearmrest.Takealookatthediagramaboveandfamiliarize
yourself with the parts of the CZ-5 before proceeding.
1. Unpack your new CZ-5 carefully. Save the carton
and inserts—they may come in handy for future
storageor shipment.
2. Take a look inside the locknut on the upper stem.
Note the yellow locking pad on the left hand side
and loosen the locking nut by rotating it fully
counterclockwise.
3. Slipthelowerstemintotheupperstem;makingsure
the flat side of the stem is aligned with the locking
pad inside the locknut.
4. Adjust the stem length (using the locknut) and the
coil angle (using the nylon wing nut) so the search
coil rests flat on the ground about 6 inches in front of,
andslightly totherightofyourrightfoot, (tothe leftof
your left foot for left handers). Your arm should be
straight and relaxed, the grip held loosely.
Drop-in battery compartments
and cable connector at rear
of housing(not shown)
Removable control
housing (belt loop on
underside of housing)
Padded arm rest
Built-in detector stand
Upper stem
Foam hand grip
Upper
lock nut
Center
section
Seven foot
search coil
cable
Lower
lock nut
8-inch Spider
search coil
Adjustable
non-metallic
lower stem
Nylon wing nut
(replacable
Duro-Neoprene
bushings, not
shown)
Figure 1. Fisher M-Scope
CZ-5 Quicksilver

6
REMEMBER: THE LONGER THE SHAFT, THE MORE YOU
WILL HAVE TO BEND YOUR ELBOW AND THE SOONER
YOURARMWILLGETTIRED.THECZ-5ISBALANCEDFOR
COMFORTABLE SEARCHING IN A TIGHT SEMICIRCLE
AROUND THE FRONT OF THE OPERATOR.
5. With the stem length properly adjusted, wrap the
loopcable tightlyaround theupper stemand secure
it with the two Velcro straps. Connect the cable
connector to the control housing.
CAUTION: MAKE SURE THAT THE CABLE IS NOT PULLED
TIGHTATTHECONTROLHOUSINGANDTHATYOUHAVE
ENOUGHSLACK ATTHE SEARCHCOILTOADJUSTITTO
ANYANGLE.
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
leaningforwardvery slightlyandraising yourarm (still
straight) until the search coil is about 2 inches above
the ground and 12 inches in front of your foot. The
searchcoil shouldbe paralleltothegroundandmay
have to be slightly readjusted at this point.
7. If the armrest is too wide or narrow, you may bend
it slightly inward or outward to meet your exact
requirements.
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 “seach” 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.
SETTING UP

7
1. GROUND:Used toelectronically cancelthe effects
ofground mineralization.Proper useof thiscontrolwill
minimizefalse groundsignals andinsure thatthe CZ-5
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-5 is in the
target ID mode, which is a silent, no-threshold
motion-discrimination mode of operation with the
abilityto identifyandthenignore(“reject”)oraccept
many kinds of small metal targets. In the AUTOTUNE
position,theCZ-5isinanall-metalmode.Inthismode,
the CZ-5 has a wider and deeper search pattern;
however, it lacks the ability to discriminate or identify
andrejecttargets.
HIPMOUNTING
1.Disconnectthecablefrom thecontrolhousingand
unwind all but the last twelve inches or so from the
stem.Securethelowerend ofthecable withaVelcro
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
anythingbut yourhands.
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.
Ifyou’reworking inshallowwater youmay want to
hang the control housing around your neck or
chest-mountwith Fisher’sChest Harness.Just make
sureyouput it in aheavy plastic bag sealedtightly
around the cable. Remember, the only thing
waterproof about the CZ-5 is the search coil.
CONTROL PANEL

8
3. PINPOINT/DEPTH READING: Athree purpose,spring
loaded push-button. When pushed and held, the
CZ-5goesintoano-motion,all-metalmodeforprecise
pinpointingand approximatedepthreadingofcoin-
sized targets. This button is also used in conjunction
withtheGROUNDcontrolduringthegroundbalancing
procedure.
4. SENSITIVITY/BATT TEST: In the extreme counter-
clockwise position, the battery condition is checked
as indicated by a strong or weak tone and a meter
reading.Whenrotatedclockwise,sensitivityto targets
(as well as ground mineralization and electrical
interference)isincreased.WhenintheAUTOTUNEmode,
this control also acts as a “threshold tone” control.
5. HEADPHONES: Thisconnector acceptsmoststereo
headphones.
6. MODE:NORMALpositionfordrylandorshallowfresh
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
5 to 10 loud target response is held constant while
faint targets continue to get louder.
CONTROL PANEL
Figure 3, Control Panel
1
2
345
6
7

9
When your CZ-5 QuickSilver is properly “ground balanced,” it
will have only a minimum response to ground mineralization.
Precise adjustment of the Ground control is critical. The higher
thedegreeof groundmineralizationor sensitivitysetting,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
aburiedpieceofmetal.Insomeareasofhighgroundmineralization
you may not be able to use the “Pushbutton” method.
1. Set your controls as follows:
GROUND = 10
DISC = 0 fornormaluseintargetIDmode.(SetDISCto
“Autotune”fordeepsearch,all-metalAuto
tunemode.
SENSITIVITY = 10
MODE = NORMAL (Unless you’re on a wet ocean
beach,inwhich caseset theMODE switch
toSALT.)
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
youcan justbarelyhear it.
4. If you’re wearing headphones, reduce the
headphonevolumecontrolstoacomfortablelevelwhen
thesearchcoilispassed overalarge, shallowtarget.
GROUND BALANCING
TURN ON PROCEDURE

10
“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, paying particular
attention to the notes under paragraph 7.
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.

11
“BOBBING” THE SEARCH COIL METHOD
This method takes a little more practice, but you may find it
slightly more accurate (fewer false signals from ground minerals)
in very highly mineralized ground (as in the note above), or if
you are searching in the Autotone mode.
1. Setasin the“Turn-On” procedure, makingsure the
DISCcontrol isatAUTOTUNEandtheSENSITIVITYcontrol
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
duringanypart ofthis procedure.
2. Lowerthecoil toan inch ortwo abovetheground
and then quickly raise it. Note that as you lower the
coil,thetonedisappears,thengetslouderasyouraise
itandfinallyreturnsto normalwhen youstopit 6to 12
inches above the ground.
Conversely, if you set the GROUND control to 1, the
thresholdhumwillgetlouderasyou lowerthecoiland
disappearwhenyou raiseit.
3.Yourobjective nowistoadjusttheGROUNDcontrol
sothatthere isnochange,oronlyaminimumchange
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:
1) It will fade again as you lower the coil and
increase as you raise it.
2) It will get louder as you lower the coil and go
silent as you raise it.
3) The hum will remain the same, or if it changes
slightly, the change is the same whether you lower
or raise the coil.
4.Ifthehumremainsthesame orchangesonlyslightly
asin3)above,yourCZ-5isproperlygroundbalanced,
and you are ready to begin your search.
5. If the tone fades as you lower the coil as in 1),
continueto lowerthegroundbalancesetting insmall
increments until the threshold hum remains the

12
SEARCH MODES
Your CZ-5 has two search modes: Target ID and Autotune. Both
searchmodesare “motion”modes,meaning thesearchcoil must
be in motion to detect a target.
AUTOTUNE SEARCH MODE
Set the DISC control to Autotune and you’re in a very sensitive,
wide-scan, all-metal, motion search mode. Since this mode
same (or changes very little) as the coil is lowered
and raised.
6. If the hum gets louder as you lower the coil, you
have gone past the correct ground balance
setting. Increase the ground balance level
(rotating the control counterclockwise) in small
increments until there is little or no change in the
threshold level.
7. 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.
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. 1fyou getasuddenbelltone, notpreceded byanincreasing
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 the GROUND controls as you
bob the coil up and down, you’re probably in an area where
there’s very little ground mineralization. Just leave the
GROUND control at 10 and begin searching.
“BOBBING” THE SEARCH COIL METHOD

13
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
theDISCcontrol to “0”toidentify it.TheDISCcontrol
is positioned so that you can switch back and forth
between Autotune and “0” with a flick of your
thumb.
2. HighlyMineralized Soil or Sand.TheAutotuneMode
is recommended for black or gray sand beaches or
highly mineralized soil. Under these conditions it may
benecessaryto lowerthe Sensitivityleveland sweep
several inches off the ground (see the note under
paragraph7onpage10).Goldnuggetsaregenerally
foundinhighlymineralizedsoilsothiswillbethesearch
modeofchoiceforprospectors.
TARGET ID SEARCH MODE
When the DISC control is set in the 0 through 6 position, the
CZ-5 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-5 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 ‘NORMAL’, VOLUME at “10”. (If you’re
wearing headphones, reduce the volume to a
SEARCH MODES

comfortable level when you are over a large target.)
3. Ground balance the CZ-5 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 get a response. Keep in mind
that for accurate target ID, the coil center must
pass directly over the target.
5. Note the response you get over the small targets:
For small iron or steel targets, the meter needle will
usually lock in the “IRON” category. Most pull tabs,
foil, nickels and the newer zinc pennies will also be
correctly classified. Silver coins, copper coins, and
the newer clad coins will ID in the highest category.
6. Note that an enlongated ferrous object such as
a nail will give you a double “beep” as you cross it
from end to end and a single “beep” if you cross its
center.
7. Most silver rings will ID at the highest end of the
scale. If you have enough gold rings you will note
that some fall in the round tab category, some in
the “FOIL” category, some in the rectangular
category, a few in the nickel category, and very
few in the remaining coin categories. This is due to
the fact that the combination of size, shape and
conductivity of a particular ring will almost always
add up to a target that is electronically identical
to either a piece of foil, pull tab or nickel. Most
metal detectors have a difficult time separating
gold rings, nickels, tabs, and foil. But, the patented
circuitry of your CZ-5 can easily tell the difference
between nickels and most trash. Better yet, it will
allow you to find many types of gold rings while
completely ignoring at least some types of pull tabs
and small pieces of foil.
8. Note also the different audio responses: an iron
target will give you a low tone, tabs and foil a
medium tone and coins a high tone.
14
SEARCH MODES

15
SEARCH MODES
9. When you go over a large, shallow target the
CZ-5 will respond with a distinctive belltone. This is
due to the fact that metal detectors can only
identify small targets. What usually happens is that
the detector circuits will overload and identify a
large target as “good” (silver, coin, etc.). Your
CZ-5, however, will alert you to the fact that the
targetisbig andshallowand cannotbe accurately
identified. (Big deep targets however, will usually
be classified as a coin. Also be aware that large
coins on the surface may set off the bell tone. And
the optional, smaller 5 inch coil is more likely to
overload than the standard 8 inch coil.)
10. You may also note that some rectangular tabs
ID as round tabs and vice versa. Because of the
wide variety of sizes, shapes and conductivity of
the many pull tabs manufactured over the years,
there is overlap as far as identification goes. Small
Figure 4. Typical CZ-5 audio and meter reponses.

16
SEARCH MODES
pieces of tabs or aluminum are often misidentified;
the tail of a round tab for example, may ID as a
nickel. However, most tabs and most of the items
on the CZ-5 meter face will be identified correctly.
11. Now increase the DISC control to “1”. You will
find that the CZ-5 rejects the small iron targets and
no longer responds either with an audio tone or
needle deflection.
12. Continue to increase your DISC control, noting
that with each successive step up you reject more
and more targets. At DISC = 4 for example, you are
in a “coins-only” mode, ignoring iron, tabs and foil
while accepting and identifying nickels, zinc
pennies and silver, clad and copper coins.
13. At the maximum DISC level of 6 the CZ-5 will
ignore most all-small targets except silver, clad and
copper coins.
14. Now switch the DISC control to the AUTOTUNE
position and note the completely different kind of
response. No tone or meter identification, just a
solid, smooth, response over every target.
15. The chart on page 15 shows some of the
responses you may expect over different targets
and at different levels of discrimination. Note that
as you progressively increase the discrimination
level you eliminate more and more targets.
NOTE: Be aware that due to the virtually infinite variety of sizes,
shapes and alloys of many “good” targets (relics, jewelry,
foreign coins, etc.), they may be ID’d as just about anything. For
example, a Civil War mini ball may be ID’d as foil, or a new
Canadian coin as a rectangular pull tab.

17
SEARCHING
Good search techniques are every bit as important as having
a good detector.
1. Makesureyour CZ-5isproperly groundbalanced
and the MODE switch is in the proper position: SALT
for wet ocean beaches, NORMAL for just about
every other situation.
2. Decide which search mode you’re going to use,
Target I.D. or Auto tune. Recommended starting
point: Target ID mode with the DISC control set at “4”.
3. Set your SENSITIVITY control. Only experience will
tell you how to set it in every situation but you’ll
probably want to run it as high as you can.
Recommended starting point: SENSITIVITY 5 . If
you’re in the Autotune mode, set it so that you can
just barely hear a slight audio hum.
4. Adjust your VOLUME control. Remember that a
setting above 5 will amplify the response of faint
targets so that they sound like a shallow or large
target. Some searchers prefer not to use it above
5 so that the audio response will give them some
idea as to the depth and/or size of the target.
Recommended starting point: VOLUME = 10, then
if you’re using headphones, adjust the headphone
volume controls 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 coil
right on the grass and slightly “scrub” it.
7. Overlap your sweeps by at least 50%. Remember
thatyourcoil’ssearchpatternisconicalandifyoudon’t
overlapeach sweepyou’llmissthedeeper targets.
8. Search in a methodical manner. Pay close
attention to where you’re going and where you’ve
been.

18
Figure 6. Keep the search coil
parallel and close to the
ground at all times.
SEARCHING
9. Keep the search coil moving at a comfortable
rate. Remember that the CZ-5 is a motion detector
and responds only when the coil (or the target) is
moving (except when in the Pinpoint mode).
10. Take your time. If you walk too fast you can’t
overlap your sweeps and you’ll miss a lot of ground.
If you swing your coil too fast you lose some
sensitivity to deep and/or small targets.
11. The diagram on the next page shows the CZ-5
search coil pattern and how it is affected by sweep
speed, ground mineralization and search mode.
Figure 6. Search pattern.
When the stem length is properly
adjusted, the CZ-5 is balanced
for sweeping in a tight semicircle.
Wide to the right for right
handers. Wide to the left for left
handers.
Be sure to overlap your sweeps.