cz-21 quicksilver - teknetics rev 2 09.25.13 - reader.… · for u.s. coins, silver rings and some...

CZ-21 QuickSilver

Operating Manual

Deep Search, Land and Underwater, Target-ID Metal Detector

MCZ21B Rev.2 091313

ATTENTION:Damagedotoneglectoraccidentaldamageis

notwarrantable

IMPACT WARNING:Impacttothefrontknobs,thefrontedge,orthe

casewillcausethefrontplatetofracture,resultinginleakage.

Such damage is not warrantable.

CABLE STRESS:Ifyouhip-mounttheCZ-21,leaveslackinthecable

soasnottopullcabletauntatendofsweep.Damagetocoilcableathousingconnectionis not warrantableifaresultofrepetitive,excessivestress.

Copyright©2010byFisher®ResearchLabs,Inc.

Allrightsreserved,includingtherighttoreproducethisbook,orpartsthereof,inanyform.

PublishedbyFisher®ResearchLabs,Inc.Fisher®isaregisteredtrademarkofFisher®ResearchLabs,Inc.

www.fisherlab.com1465-HHenryBrennanDr.,ElPaso,TX79936•(915)225-0333

MADEINUSA

CONTENTSAbout Your Detector ..............................................................pg. 3

Condensed Operating Instructions ......................................pg. 5

Headphones ...........................................................................pg. 6

Assembly ................................................................................pg. 7

Setting Up ................................................................................pg. 8

For Land or Shallow Water ..................................................pg. 8

For Diving .............................................................................pg. 9

For Hip-mounting ................................................................pg. 10

Control Panel ..........................................................................pg. 12

Turn on Procedure ..................................................................pg. 13

Ground Balancing ..................................................................pg. 13

Touch Pad ............................................................................pg. 14

Bobbing................................................................................pg. 15

Search Modes .........................................................................pg. 17

Auto-Tune ............................................................................pg. 17

Target-ID ..............................................................................pg. 18

Searching on Land or in Shallow Water ...............................pg. 20

Searching Underwater ...........................................................pg. 23

Pinpointing ..............................................................................pg. 24

Target Identification ...............................................................pg. 25

Target Recovery .....................................................................pg. 29

Recovery Tools ........................................................................pg. 30

False Signals ............................................................................pg. 31

Battery Replacement .............................................................pg. 35

Maintenance ..........................................................................pg. 37

Battery Door Gasket: Orientation .........................................pg. 38

Where To Use Your Metal Detector In the U.S. .....................pg. 39

Specifications .........................................................................pg. 40

Treasure Hunters’ Code of Ethics ..........................................pg. 42

Warranty ..................................................................................pg. 4343

2-Year Limited WarrantyRegister your warranty on-line for a chance to win a

FREE DETECTOR.For details, visit www.fisherlab.com

TheCZ-21metaldetectoriswarrantedagainstdefectsinmaterialsandworkmanshipundernormalusefortwoyearsfromthedateof

purchasetotheoriginalowner.

Damageduetoneglect,accidentaldamageormisuseofthisproductisnotcoveredunderthiswarranty.Decisionsregardingabuseormisuseof

thedetectoraremadesolelyatthediscretionofthemanufacturer.

Proof of purchase is required to make a claim under this warranty.

NOTE TO CUSTOMERS OUTSIDE THE U.S.A.Thiswarrantymayvaryinothercountries,checkwithyour

distributorfordetails.Warrantydoesnotcovershippingcosts.

LiabilityunderthisWarrantyislimitedtoreplacingorrepairing,atouroption,themetaldetectorreturned,shippingcostprepaid,toFisher®

Labs.ShippingcosttoFisher®Labsistheresponsibilityoftheconsumer.

AccordingtoFCCpart15.21ChangesorModificationsmadetothisdevicenotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoid

theusersauthoritytooperatethisequipment.ThisdevicecomplieswithFCCPart15SubpartBSection15.109ClassB.

Toreturnyourdetectorforservice,pleasefirstcontactFisher®LabsforaReturnAuthorization(RA)Number.ReferencetheRAnumberonyourpackageandreturnthedetectorwithin15daysofcallingto:

Fisher Research Labs, Inc.1465-H Henry Brennan Dr.

El Paso, TX 79936Phone: 915-225-0333 ext. 118

Warrantycoveragedoesnotincludethecostoftransportingthedetectorbacktoanownerwhoislocated

outsideoftheUnitedStatesofAmerica.

3

ABOUT YOUR DETECTOR Your CZ-21 QuickSilver is an all-purpose metal detectorengineeredforland,beach,saltandfresh-watertreasurehunters.Herearesomeimportantfeatures:

1. Leak-proof:Submersibleto250feet.2. 3-Tone Target-ID:Alowtoneforiron,amid-tonefor

pulltabs,foilandmostgoldrings,andahightoneforU.S.coins,silverringsandsomegoldrings.

3. Depth:PatentedFourierdomainsignalanalysis.Two deep-seeking, ground-compensating VLF signals(oneat5KHzandoneat15KHz)providetwiceasmuchtargetinformationforaccurateanalysisandidentification.

4. Two Search Modes: A silent running, slow motionTarget-IDModeandahot,Auto-TuneModeforAllMetalsearching.

5. V.C.O. No-Motion Pinpointing: Tapthepinpointbuttonandtheaudiotoneincreasesinpitchandvolumeasthecenterofthecoilapproachesthetarget.

6. Big-Target Alert: The CZ-21 circuits may overloadon large, shallow targets. A distinctive bell toneimmediatelywarnsyouthatthetargetistoolargetoidentify.

7. Faint-Target Audio Boost:Asyouincreasethevolumelevelpast“5”,strongtargetsoundsremainatafixedvolumewhilefaint,deep-targetsoundscontinuetogetlouder.

8. Quick Manual Ground Balance: Tap the pinpointbuttonandlowerthecoiltotheground.Thensetthegroundcontroljustbelowtheaudiotoneandyouarepreciselytunedforon-siteconditions.

9. Separately Sealed Battery Compartment:Protectstheelectronicsfromaccidentalflooding.

TREASURE HUNTERS’ CODE OF ETHICSLET’S PRESERVE OUR TREASURED SPORT!

Lawsgoverningtheuseofmetaldetectorsarebecomingmoreandmorecommon.Inmanycountries,theuseofmetaldetectorsisillegalorseverelyrestricted.Don’tletthishappeninyourarea.

•AlwayscheckFederal,State,Countyandlocallawsbeforesearching.

•Respectprivatepropertyanddonotenterprivatepropertywithouttheowner’spermission.

•Takecaretorefillallholesandleavenodamage.•Removeanddisposeofanyandalltrashandlitter

found.•Appreciateandprotectourinheritanceofnaturalre-

sources,wildlifeandprivateproperty.•Actasanambassadorforthehobby,usethoughtful-

ness,considerationandcourtesyatalltimes.•Neverdestroyhistoricalorarchaeologicaltreasures.•Alltreasurehuntersmaybejudgedbytheexampleyou

set;alwaysconductyourselfwithcourtesyandconsid-erationofothers

42

ABOUT YOUR DETECTOR

4

10. Searchcoils: The CZ-21 comes with the 8” coil asstandard equipment, but can also be customorderedwiththe10”coil.Allcoilsarepermanentlyattached.

11. Balanced, Comfortable and hip-mountable: Cushioned armrest, soft foam grip and a controlhousingthatslipsoffthehandleandontoyourbelt.

12. Salt Water Compensation: Saltwater iselectricallyconductive, and therefore induces a strongsignal in the searchcoil. Unlikemostothermetaldetectors, the CZ-21 uses Fourier Domain signalanalysistocancelthesaltwatersignal.Undermostconditionsyouwillnotexperienceanyfalsesignalsfromsaltwater. Whenworkinginthesurfzoneathighsensitivitysettingsyoumayhearanoccasional“whisper”whichiseasilyignored.

13. Easy-to-Use:Justpickitup,setthecontrolontheredcirclesandstartsearchingina“coins-only”mode.Or formaximumperformance,adjust thecontrolsfor your own specific situation.

Read this instruction manual thoroughly, practice often and you’re in for some exciting treasure hunting. Dropusalineifyouhaveanyquestions,commentsorgoodfindstotellusabout.Inthemeantime...

HappyHunting,Fisher®ResearchLabs

41

Batteries.................... SeparatelySealedCompartment...........Yes................................... Type.......................................... (4)9VAlkaline................................... LifeAlkaline......................................35-55hrs.................................... NiCads..............................................10-20hrs.

OperatingTemperature..... 32°-110°F

FaintTargetAudioBoost.... YesManualThresholdTuning.... InAuto-TuneModeTarget-ID............................... Threetonesplusbelltoneforlarge,............................................... shallowtargets,plus7presetDISC................................................ controlsettings

SPECIFICATIONS

Notes:

1. Subjecttoimprovementormodificationwithoutnotice.2. Approximate.3. PulsegateUnipolarAudioProcessing.AdvancedFisher®circuitrywhichallows

silentoperationbelow“audiothresholdtone”withnolossinsensitivity.4. TheCZ-21isa“motion”detectorwhileinthesearchmode.TheSearchcoil

mustbemovingatleastslightlytodetectatarget.5. Electro-Static-Insulatedtoeliminatecertaintypesoffalsesignals.

5

CONDENSED OPERATING INSTRUCTIONS

Factory Pre-Set “Turn-On-and-Go” Marks YourCZ-21QuickSilverissimpletooperate.Evenso,westronglyrecommendthatyoureadthisentiremanual.You’llbeabletotuneyourCZ-21toyourspecificneedsandconditions.

1. Set all the controls to the red “Turn-On-and-Go”pre-set: GROUND =5 DISC =4 SENSITIVITY =3 VOLUME =5

Thisputsyouina“coins-only”mode,andyou’rereadytostartsearching.KeepinmindthattheGROUNDsettingof“5” isprobablynot theoptimumsettingforthegroundyou’researching.Thesensitivitylevelissetlowtoreducefalsesignalscausedbygroundmineralization.

Pre-set Audio Boost mark at “5”

Salt-water Pre-set SENSITIVITY at “3”

Pre-set DISCRIMINATION at “4”

Pre-set GROUND at “5”

Figure 1. Factorypre-setturn-on-and-gomarks(circledinredorblueonyourCZ-21controlpanel)cangetyouupandrunningimmediately.

40

SPECIFICATIONSLength..................... Extended.................................................... 50”................................... Collapsed................................................... 30”

WeightComplete(withheadset)..............5lb...11oz.6lb...1oz.5.4lb.HandleandSearchcoil............... 2lb...6.9oz.2lb...12.9oz.2.1lb.ControlHousing....................................................................... 2.8lbs.

Frequency............... 1.Dual,VLFSearch5KHzand15KHz................................... 2.AudioTargetResponseIronID....................... 200Hz(Lowtone)FoilandTabID........ 450Hz(Midtone)CoinID1KHz(Hightone)Auto-Tune................ 500Hz-1KHz(V.C.O.)Pinpoint................... 500Hz-1KHz(V.C.O.)

OperatingModes1.Auto-Tune.... VLF-Motion,AllMetalwiththresholdtone2.Target-ID..............................................................VLF-SlowMotion,............................................................... SilentSearchDiscrimination3.Pinpoint................................................ VLF,AllMetal,NoMotion

Searchcoil................ Type...........................Concentric,Co-Planar................................... Diameter.................................. 8”,10.5”or5”................................... Shielding........................................... 100%ESI................................... Interchangeable.......................................No...................................

Headset...................................................Waterproof,PiezoElectricInterchangeable............................................................................No

GroundBalance.......................................... TouchPad,Manualor.................................................................. “Preset”ControlMarkingsHip-mountableControlHousing..................................................YesSaltWater/FreshWaterOperation..............................................YesLandOperation.............................................................................YesSubmersible....................................................................... to250feet

8”Coil 10.5” Coil5”

Fresh-water sensitivity Pre-set at “7”

6

2. Adjustthevolumecontrolforacomfortablevolumewhen the coil is passed over a large, shallowtarget.

3. Travel slowly, overlap your sweeps and keep thesearchcoilmoving.Remember,you’reina“motion”search mode, and the coil must be in motion todetectatarget.

4. Whenyougetagood,repeatablesignal,pinpointthetarget.


39

Where To Use Your Metal Detector In The U.S.

National Forest and Federal Lands—Metaldetectingisallowedonlybyspecialpermitacquiredfromthefederalgovernment.Eachareahasadistrictoffice.Corps of Engineers, Lakes, Shorelines and Lands—Permissionhasbeengrantedonlyonpre-disturbedsites,suchasbeachesandattachedswimmingareas.NewCorpslakesandlandsmustbeokayedbythemainofficeoftheArmyCorpsofEngineers.Eachareahasadistrictoffice.State Parks and Lands—Somestateparksareopentometaldetecting,butsomearenot.Alwayscheckwiththeparkrangerbeforeattemptingtouseyourdetector.Bureau of Land Management (BLM) Lands—Someareasareopenformetaldetecting,andsomearenot.Alwayscheckwiththedistrictoffice.City or County Park Lands—Mostareopentometaldetectingunlessnoticeisgivenbyasignorcityordinance.Whenindoubt,alwayscheckwiththecity’sParksandRecreationDepartment.Public School Grounds—Mostareopentometaldetectingunlessnoticeisgivenbyasign,cityordinance,lawenforcementofficial,orschoolemployee.Youshouldalwayscheckwiththeschoolofficefirst.Privately Owned Lands (Private Property)—Permissionrequired.Itisalwaysbesttohavethepermissioninwriting.Historically Marked Lands or Sites—Metaldetectingisnotallowed.Don’teventhinkaboutit.

TheCZ-21issuppliedwithpermanentlyattachedwaterproofheadphones.Theycannotberemovedbytheuser.Iftheyaredamagedorneedservice,youmustreturntheentiredetectorassemblytothefactoryrepairorreplacement.

Headphonesimprovesbatterylife,andpreventsthesoundsfromannoyingbystanders.Italsoallowsyoutohearsubtlechangesinthesoundmoreclearly,particularlyifsearchinginanoisylocation.Forsafetyreasons,donotuseheadphonesneartrafficorwhereotherdangersarepresent.Thisdeviceistobeusedwithinterconnectingcables/headphonecablesshorterthanthreemeters.

Using Headphones

38

BATTERY DOOR GASKET: ORIENTATIONCROSS SECTION

Therubbergasket,whichfitsintothebatterydoor,mustbeinstalledwith the larger protrusion (B), toward the battery door.

Ifyouremovethegasketforcleaning,re-installcorrectly.Improperinstallationwillresultinleakage.

Figure 16. Batterydoorgasketinstallation

CASE BATTERYDOOR

A = Small side to caseB = Large side to battery door

A B

Fisher®

searchcoil

7

ASSEMBLY

Submersible Headphones

Control Housing

Target-ID Decal

Foam Hand Grip

7-foot Searchcoil Cable

Fiberglass Upper StemArmrest Screw

Battery Access Panel

8-inchSpider

coil

NylonWing Nut

Fiberglass Reinforced Nylon Lower Stem

Headphone Plug

Adjustable Armrest

YourFisher®CZ-21requireslittleassembly.Handleitcarefully,careforitregularly,anditwillgiveyouyearsofdependableservice.

1. Remove the headphone, handle and searchcoilassembliesfromthebox.Becarefulnottoputanystrainonthecableconnections.

2. Adjust the lower stem to theapproximate lengthyouwillbeusing:extendedforstand-upuseorasshortaspossiblefordiving.Toextendthelowerstem,pushinthespringlock,pulloutthelowerstemandletthespringlocksnapintoanotherhole.

3. Unwindjustenoughcabletoattachthesearchcoiltothelowerstem.

4. Removetheboltandwingnutfromthesearchcoil.Lineuptheholeinthelowerstembetweenthetwoholesinthesearchcoil“ears.”Attachthecoiltothestemwiththeboltandwingnutandfingertighten.

5. Thearmrestmayberepositionedformaximumcomfortbyremovingthearmrestscrew,slidingthearmresttothenextscrewholeandre-insertingthearmrestscrew.

Control Panel

Figure 2. CZ-21QuicksilverDetector.

8

SETTING UP FOR LAND OR SHALLOW WATER Puttheheadphonesaroundyournecktokeepthemoutofthewaywhilemakingthefollowingadjustments:

1. Adjust the stem length and coil angle so thesearchcoilrestsflatonthegroundabout6-inchesinfrontandslightlytotherightofyourfoot(totheleftofyourleftfootifyou’relefthanded).

2. Leaveenoughslackinthecoilcabletoallowthecoiltoswivelasfarasitcanineitherdirection.Thecoilwingnutshouldbetightenoughtopreventthecoilfrommoving.

searchingonlandorinshallowwater,keepyourarmstraightandyoursearchcoilnomorethan2-inchesabovetheground.

37

MAINTENANCE YourCZ-21doesn’trequirealotofcare.It’sbuiltwithhigh-qualitymaterials,andit’swaterprooftoadepthof250feet.Butthereareafewthingsyoushoulddotokeepitinpeakoperatingcondition.

Handling 1. Donotdropyourdetector.2. Donotdropthehousingdirectlyontotheknobs. Damage caused by impact is not warrantable.

Storage 1. If you’re not going to be using it for awhile, take

thebatteriesout.Aciddamagecausedbyleakingbatteriescanbesevere.

Damage from battery acid is not warrantable.2. Avoidextremetemperatures.Don’t leaveit inside

aclosedcarsittinginthesunorevenworse,inthetrunkofacar.

Cleaning 1. Sandanddirtbetweenthecoil“ears”andlowerstem

willgrindawaytheearsandstem.2. Theheadphoneearpadsmayberemoved,rinsed

and squeezed out to remove any sea water saltbuildup.

3. Sand,siltorfinedirtbetweentheupperandlowerstemswillcausethelowerstemtofreezeup.Rinsefrequently.

4. Rinse the lowerareaunder the twoknobson thecontrolpanelthoroughlyafteruseinsaltwater.

5. Alwayscleananddrytheareaaroundthebatterycoversealbeforeopening.

Battery Compartment 1. Removethebatterycoverandcheckforwater

aftereachuseinwater.2. Keepthesealingsurfacesofthebatterycover

andcontrolhousingcleanandfreeofscratchesandnicks.Removeandcleantheneoprenegasketfrequently.Lubricatingthegasketisnotrecommended.Cleanthegasketwithmildsoapandwarmwateronly.Donotusepetroleumjellyorsiliconegreaseatanytime.

3. Re-installgasketcorrectly(seeillustrationnext

SETTING UP

ASSEMBLY

Figure 4. When

AdjustableArmrest

Figure 3.

page)

Screw

ScrewHole

UpperStem

3. Youshouldnowbeabletomoveintoyour“search”positionbyleaningslightlyforwardandraisingthesearchcoilnomorethan2-inchesabovetheground.Yourarmshouldstillbestraight,andthecoilshouldbeparalleltotheground,about12-inchesinfrontofyourfoot.Thecoilanglemayhavetobeslightlyreadjustedatthispoint.

SETTING UP FOR DIVING Unlike most VLF metal detectors, the CZ-21 works well in saltwater.Thiscapability,alongwithitsdeep-seekingsensitivity,makesitidealforunderwatertreasurehuntingandwreckdiving.TheCZ-21iswaterprooftoadepthof250feet.Remember,alwayspracticesafedivingmethods.

When diving with your CZ-21, use the shortest stem length possible, with the extra cable wrapped tightly around the stem, as closely as possible to the control housing. Never hip-mount your control housing while diving.

1. Adjustthestemlengthasshortasyoucanwithouthavingthesearchcoildetectyourdivinggear.

2. Adjust the searchcoilparallel to the seabed, riverorlakebottom.

3. Makesureextracableiscoiledtightlyontheupperstemascloselyaspossible to thecontrolhousing,with justenoughslacknearthesearchcoiltoallowittoswivelasfarasitcanineitherdirection.Toomuchloosecablenearthesearchcoilmaygeneratefalsesignals.

4. Removethetetheredearphoneplugsforrapidpressure

36

BATTERY REPLACEMENT

VERY IMPORTANTFollowtheseinstructionscarefullytoavoidgettingwater inthebatterycompartment.

1. Tuckinthewires.Donotpinchtheminthesealwhenclosing.

2. Thebatterydoorwillcapturethebatteryholderandself-centeritasyouinstallthedoor.

3. TightentheknobsSECURELY. a. Useacoin. b. TightenbyhandFIRMLY. UsemaximumMANUALforce. c. DoNotuseatool. d. DoNotuseascrewdriver. Torque Specification is 8 in-pounds.

4. Ifyouhaveremovedthegasket,seepage36forinstallationinstructions.An improperly installed gasket = a water leak!

5. Submergethedetectorinwaterfor1/2hour. a. Removefromwater. b.Dryoffthedetector c. Removethebatterydoor d. Verifythatnowaterhasentered. This step is necessary to insure that you are applying enough force to the screws.

6. Ifyoucannottightenthescrewssecurelybyhand,thenuseascrewdriver.

a. Tightenthescrewamaximum additionalrotationof15°beyondthe

hand-tightenedposition.

7. Lithium grease is installed between thecontact surfaces of the thumb-screw andinsertinthecase.

a.Donotwipeoffthegrease.b.Withusage,thegreasemaywearoff.c.Without grease, the thumb-screw may seize up after

tightening.Ifthishappens,reapplyasmallamountoflithiumgreasebetweenthecontactsurfaces.

15°

9

Control housing

Shortened stem length

Extra, coiled cable

SETTING UP

Figure 5.

equalization as you dive and return to the surface.

10

Caution: Hip-mounting the CZ-21 control housing is not recommended for underwater use. The searchcoil cable may become entangled with a submerged object, making it difficult for the diver to resurface quickly in case of emergency.

SETTING UP FOR HIP-MOUNTING For nearly-effortless treasure hunting, the control housing iseasily removed fromthehandleandattachedto thebeltclip(included).

INSTRUCTION FOR REMOVAL OF CZ-21 FROM HANDLE

WARNING DO NOT DO THIS

Donotpushonunitfromtheback(batteryside.).Doingthiswillmostlikelycauseunittoreleasesuddenlyandflyoff,impactingonthecontrolknobsonthefloor,anddamagingtheunit.THISTYPEOFDAMAGEWILLVOIDYOURWARRANTY

SETTING UP

35

TheCZ-21ispoweredbyfour,9-volttransistorbatterieslocatedintherearsectionofthecontrolhousing.Thebatteriesaresealedofffromtheelectronicssothataccidentalwaterleakageintothebatterycompartmentwillnotdamagethecircuitry.Toreplacethebatteries:

1. Removethebatterydoorbypartiallyunscrewingthetwoknurledthumbscrews.Theknurledknobsare“captivescrews”andarenottobecompletelyremovedfromthebatterydoor.

2. RemovethebatterypackfromtheControlHousing.It’snotnecessarytodisconnectthebattery leadconnector.Beverycarefulnottoputanyunduestrainonthebatteryleads.

3. Removethebatteriesfromthebatterypack,andinstall fresh alkaline batteries. You may also userechargeableNiCads,butexpectabouthalfthebatterylife.

4. Insert the battery pack into the Control Housing.Withyourfinger,pushthetopofthebatterypack(withtheleads)intotheControlHousingfirst,thenletthebottomfollow.

5. Make sure the O-ring and both sealing surfacesareclearandfreeofdebrisbeforereinstallingthebatterycover.THIS IS EXTREMELY IMPORTANT!

See page 36 for gasket orientation.6. Finger tighten the thumb screws, then carefully

tightenagain1/4turnwithacoinorscrewdriver.

DO NOT MIX OLD AND NEW BATTERIES

BATTERY REPLACEMENT

Figure 6.Youcanhip-mountyourCZ-21byslidingthecontrolhousingfromthehandleandattachingittoyourbelt.Thisreducestheweightofthestem,creatingnearlyeffortlesshunting.

11

Holdunitfirmlyandseparatehandle,beingcarefulnottodropthecontrolunitanddamageit.Placeunitbatterysidedownwithbatterycoverontabletop,oraflatstablesurfaceandgrasptheunitfirmlyinonehandandthehandlegripfirmlyintheother.

“Hip-mounting” the CZ-21 in this manner takes about half theweightoffthehandleandallowsthelandorshallow-watertreasurehuntertosearchmuchlongerwithoutarmfatigue.

1. Slidethebeltclipintogroovesonthebottomofthecontrolhousing.Thisisasnugfit,andyou’llhavetobendtheclipslightly.

2. Unwrap justenoughof thecoilcable toallowforsearching.

3. Slipthecontrolhousingontoyourbelt,leftsideforrighthanders,rightsideforlefthanders.

NOTE: Because of the extreme sensitivity of the CZ-21 searchcoil, hip-mounting the control housing may produce a false signal when the searchcoil reaches the end of its arc (on the side that the control box is attached to your belt). Depending on your stem length and how high you have the housing hip-mounted, the searchcoil may actually detect the housing.

WARRANTY NOTICE:Damage to coil cable at housing connection is not warrantable if damaged by excessive force.If hip-mounting, please leave slack in the cable so as not to yank the cable from the housing at the end of your sweep.

SETTING UP

34

betweenthebeeps,orifyousweepatrightanglestoyouroriginaldirection,you’llreceiveasinglebeepdirectlyoverthetarget.

a)Shallowcoins(atornearthesurface)orcoinsonedgewillgiveadoublebeep:oneoneithersideofthecoin,justlikeanail.Likethenail,thecoinonedgewillgivea singlebeepdirectlyoverthetargetifyousweepatrightanglestoyouroriginalposition.

b) A coin lying in the ground at an angle (asshown)maygiveasingletargetresponsebutmaypinpointseveralinchesawayfromitstruelocation.Checkaroundtheinsideedgesofthehole.Ifyoustilldon’tfindit,enlargetheholebyacoupleofinches.

c)A large,deep target, likeaburiedpipeoramanholecoverat2feet,willoftengiveagood,strongcoinsignal. Ifyou’vedugdownafootandwidenedyourholeseveraltimes,giveup.

FALSE SIGNALS

11. Practice! Practice over known targets. Practiceground balancing. Practice pinpointing. Rereadtheappropriatepartofthismanualifyou’rehavingproblems.

12

1

2

5

3

4

CONTROL PANEL1. VOLUME/OFF: Power on-off and volume control.

Volumeisgraduallyincreasedfrom1-5settings.From5-10,loud-targetresponseisheldconstantwhilefainttargetscontinuetogetlouder.

2. DISC:Inthe0-6positions,theCZ-21isintheTarget-IDMode,which is a silent, no-threshold, Motion-DiscriminationModeofoperationwiththeabilitytoidentifyandthenignore (“reject”)oracceptmanykindsof smallmetaltargets.IntheAUTO-TUNEposition,theCZ-21isinanAllMetalMode.Inthismode,theCZ-21hasaslightlywideranddeepersearchpattern,however,itlackstheabilitytodiscriminateoridentifyandrejecttargets.

3. GROUND:Usedtoelectronicallycanceltheeffectsofground mineralization. Proper use of this control willminimizefalsegroundsignalsandensurethattheCZ-21isoperatingatitsmaximumpotentialinjustaboutanygroundconditionincludingwetoceansand.

4. SENS (Sensitivity)/BATT TEST: SENSITIVITY:Thehigherthesetting,themoresensitive

thedetector.Startatlowersensitivitysettinguntilyougainexperiencewiththedetector.(3)isthesuggesteddefaultsettingforsaltwaterhunting.(7)issuggestedforfreshwater.

BATTTEST:Totestbatteries 1.Reducevolumetolowlevel 2.Putonheadphones 3.RotateSENSknobtoBATTTESTposition 4.RotateVOLUMEknobtoincreasevolume Asyourotateto“10”thevolumeandtonewillindicate

Figure 7.ControlPanel

33

FALSE SIGNALS

above.6. Wet Salt Water Sand:YourCZ-21shouldbeableto

handlemostwetsandeasilyunless it’sblack.SeeBlackSandabove.Youshouldabletoreducethenumber of false signals caused by salt water bylowering your sensitivity and making sure you aregroundbalancedproperly.

7. Hot Rocks:Somerocks,byvirtueoftheirhighmineralcontent, will be seen by metal detectors as ametaltarget.IntheAuto-TuneMode,theCZ-21willrespondtomosthotrocks.Prospectorsmustlearntodistinguishbetweenhotrockandnuggetsounds.IntheTarget-IDMode,certaintypesofhotrockswillbeautomaticallyrejectedatDISC=“0”andvirtuallyallotherhotrockswillbeidentifiedasironorrejectedatDISC=“1.”

8. “End of Swing:”Silentsearchmotiondetectorsoftengivefalsesignalsattheedgesofthesearchpattern,justasthecoilstopsandbeginsacceleratingbacktowardtheoperator.Ifthisisaproblem,tryoneormoreofthefollowing:a) Keepyoursweepsmooth,slowandlowtothe

ground.b) Checkyourgroundbalance.c) Loweryoursensitivity.d) Makesureyoursearchcoil isproperlysecured

andthecableconnectorisfirmlytightened.9. Digging Tool:Ifyou’recarryingametalsandscoop,

diggingknife,orscrewdriver,holditbehindyourbackorkeepitaboveyourwaist.YourCZ-21issensitiveenoughtosoundoffeachtimeyousweepthecoilbeneathit.

10. Elongated Ferrous Objects: If you get two beepsclosetogetherandcan’tfindeithertarget,youmaybenearanailorsomeother long,ferrousobject.Fortunately, in most cases your CZ-21 will identifytheseobjectscorrectly.Inallcases,thetargetwillbe

13

When your CZ-21 QuickSilver is properly “ground balanced,”it will have only a minimal response to ground mineralization.PreciseadjustmentoftheGROUNDcontroliscriticalforoptimumperformance.Thehigherthedegreeofgroundmineralizationorthehigherthesensitivitysetting,themorecriticalitistohaveyourmachineproperlygroundbalanced.OnceyouadjustitineithertheAuto-TuneModeorTarget-IDMode,youcanswitchbackandforth between the two modes without resetting. Recheck yoursetting occasionally as you search because ground conditionsoftenchangerapidly. Ifyouhavedifficultygroundbalancing,tryreducingyoursensitivitylevelormovingtoanotherspotjustincaseyouareoveraburiedpieceofmetal.Insomeareasofhighgroundmineralizationyoumaynotbeabletousethetouchpadmethod.

batterystrength. GOODBATTERIES:Loud,highpitchedtone WEAKBATTERIES:Soft,lowpitchedtoneor“ticking”sound BATTERIESNEEDREPLACING:Notone Duringuse,thespeakervolumewillfadeandbecome

nearlyinaudiblebeforethedetectorperformanceiscompromisedbyweakbatteries.

5. PINPOINT: ActivatingthePINPOINTfeaturewiththecenter-positionedbuttonentersaNO-MOTIONDetectionMode.Inthismodeofoperation,thedetectorwillemitamonotonehumwhenevermetalentersthecoil’sfieldofdetection.Tousepinpoint,PRESSthebutton.Thepinpointbuttonwillnotdeflectwithpressure;youwillfeelnomovementinthebutton.A2ndpressofthebuttonwillreturnyoutoyourpreviousmotiondetectionmode.

A moderate pressure,applied briefly to thecenterof thebutton, isrequired.

The button requires a2-secondwaitbetweenpresses.

GROUND BALANCING

CONTROL PANEL

32

yourIDlocation,yourtargetisprobablyapieceofiron. Reducingyoursensitivity level, takingshorter,slowersweeps,orincreasingthediscriminationlevelmayreducethenumberoffalsesignalscausedbytrash.

2. Deep Targets: Deep targets, just barely withinthe rangeof theCZ-21,maybemisidentified.Forexample,adeepcoinmay IDas iron,oradeeppieceofironmayIDasacoin.There’snotmuchyoucandotoavoidthisotherthantouseyourPinpointModetoensurethatyouareexactlycenteredoverthetarget.Oryoumayreduceyoursensitivitylevelsoyoujustignoretheverydeepesttargets.

3. Electrical Interference:Constantchattercausedbyradio/TVstations,power linesornearbydetectorsoperatingatoneoftheCZ-21searchfrequencies.Thebestsolutionistomoveawayfromthesourceof the interference. You may also try one of thefollowing:

a) SwitchtotheAuto-TuneMode.b) Reduceyoursensitivitylevel.c) Slowdownyoursweepspeed.

Iftheinterferenceisonlyminimalandyouwishtocontinuesearchinganyway,testyourCZ-21overaknowntargettomakesureit’soperatingproperly.Insidesomebuildings,electricalinterferencemaybesobadthatyou’llhavetogooutsidejusttobenchtestyourCZ-21.

4. Highly Mineralized Soil: May cause a bell toneresponse or constant false signals. Check yourground balance (See page 11). Try lowering thesensitivityand/orincreasingthediscriminationlevel.SearchintheAUTO-TUNEMode.Re-groundbalanceusing the“bobbing”method(Seepage13). Ifallelse fails, raise thesearchcoil justhighenoughforthe false signals todisappearand then sweepatthatconstantheight.

5. Black Sand: Same as Highly Mineralized Soil

FALSE SIGNALS

14

QUICK G.B. METHOD Thiswillprobablybeyourmethodofchoiceinallbutthemostdifficultofgroundconditions.It’sfast,easyandaccurate.YoucanusethismethodineithertheAuto-TuneorTarget-IDMode.

1. WithGROUNDcontrolat“10”holdyoursearchcoil6to12-inchesofftheground.Makesureyou’reatleast3-feetawayfromanymetalobjects.

2. TapthePINPOINTbuttonandlowerthesearchcoiltotheground.RotatetheGROUNDcontrolclockwiseuntilyouhearanaudiotone.Thenbackofftotheexactpointwherethetonedisappears.

3. Always ground balance your CZ-21 in the areasyou intend to search, whether it’s on land orunderwater.

NOTES: 1. Ifyougetanaudioresponseasyoufirstlowerthecoilwith

theGROUNDcontrolat“10,”you’reprobablyoverapieceofmetal.Moveandtryagain.

2. If yougeta suddenbell tone that isnotprecededbyanincreasing audio response as you lower the coil, you’reprobablyinsomeveryhighlymineralizedsoilorsand.Inthiscase,it’sbesttousethe“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.

GROUND BALANCING

31

FALSE SIGNALS A“falsesignal”occurswhenatargetisincorrectlyidentified.Forexample,asmall,broken-offpieceofpulltabmaybeidentifiedasanickel.Orasmall,deepcoin,especiallyinmineralizedsoil,may read “IRON.” The more sensitive the metal detector, theharderitisnottohavefalsesignals.YourCZ-21isanextremelysensitivemachine,soyou’reboundtoencounterthem.Herearesomeofthemostfrequentsourcesoffalsesignalsandwhattodoaboutthem:

1. Trash: The most common source of false signals.Largeor irregularpiecesof trashmaygivegood,consistent,high-tonesignals.Inthiscaseyou’llusuallyhavetodigthetarget,butwithexperienceyou’llbeabletoeliminatemanyofthelargetargetswhosesizewillbeobviouswhenyougointothePinpointMode.Anotherfalsesignalresponsemaybea“one-way”ordisappearingsignal.You’llsweepoverthetargetandgetagoodsignalbutnothingon thereturn sweep. When this happens you’re over atarget that theCZ-21can’tpositively identifyduetoitssize,shape,depthoralloy.TheCZ-21mayIDitasacoinwhensweptfromonedirectionandirononthereturnsweep. IfyourDISCcontrol is setat“0”you’llhear firstahightone(coin)andthenalowtone(iron).OrifyourDISCcontrolissethigher,torejectiron,you’llhearthehightonesweepingonewayandnothingtheotherway. Quiteoftenthesignalwilljustdisappearandyouwon’tbeabletofinditnomatterwhichdirectionyousweep.Theseone-wayanddisappearingsignalsareusuallytrash,andasageneralruleyoushouldignorethem. If you have any doubts, tap the PINPOINTbuttontogetanaccuratelocation,andthenIDthetarget.Ifyougetagoodrepeatabletone,digit.Ifyoustillgetaone-waysignaloritdisappears,moveon.Also,ifyourpinpointinglocationisdifferentthan

15

BOBBING METHOD1.Turn disc knob to “AUTO-TUNE”, this puts you into

Auto-Tune Mode. Set the “SENSITIVITY” control sothatyoujustbarelyhearathresholdhum.

Holdthesearchcoil6to12-inchesoverthegroundandat least3-feetawayfromanymetalobjects.DonotusethePINPOINTbuttonduringanypartofthisprocedure.

2. Lowerthecoilaninchortwoabovethegroundandthenquicklyraiseit.Notethatasyoulowerthecoil,thetonedisappearsthengetslouderasyouraiseitandfinallyreturnstonormalwhenyoustopit6to12inchesabovetheground.Conversely,ifyousettheGROUNDcontrolto“1,”thethresholdhumwillgetlouderasyou lowerthecoilanddisappearwhenyouraiseit.

3. YourobjectivenowistoadjusttheGROUNDcontrolso that there is no change, or only a minimumchangeinthethresholdhum,asyoumovethecoilupanddown.StartbyloweringtheGROUNDcontrolto“9.”Lowerthecoilandraiseitagain.Oneofthreethingswillhappentoyourthresholdhum:a) It will fade again as you lower the coil and

increase as you raise it. Continue to lower thegroundbalancesettinginsmallincrementsuntilthethresholdhumremainsthesame(orchangesverylittle)asthecoilisloweredandraised.

b) lt will get louder as you lower the coil and gosilent as you raise it. You have gone past thecorrect ground-balance setting. Increase theground-balance level (rotating the controlcounterclockwise)insmallincrementsuntilthereislittleornochangeinthethresholdlevel.

c) Thehumwill remain the same,or if itchangesslightly, the change is the same whether youlower or raise the coil. Your CZ-21 is properlygroundbalanced,andyouarereadytobeginsearching.

GROUND BALANCING

30

RECOVERY TOOLS1. Sandscoopsdesignedespeciallyforbeachcombers

andshallow-watertreasurehuntersareavailableatmetaldetectoroutlets.

2. Divers use a variety of recovery tools, dependingontheconditionoftheseabedorlakebottom.Asturdydiveknifewillsufficeinpackedmudorsmallrocks.Mostdiversprefertousetheirhandsinloosesand.Professionaltreasurehuntersoftenuseanairhose fed by a surface compressor to blow awayloosesand,gravelormud.

3. Forlandrecovery,asturdyhuntingknifewitha5-inchbladewillsufficeinmostsoils.Ahighquality,doubleedged“survival”knifeisanevenbetterchoice(andmoreexpensive)becauseitwillbealmostimpossibletobendorbreak.CAUTION: Using a jack knife without a locking blade is a good way to lose a finger.

4. Aheavyduty,bluntscrewdriveriscommonlyusedfor shallowtargetswherediggingor“plugging” isobjectionable.

16

GROUND BALANCING

4.Withalittlepractice,youshouldbeabletogroundbalance quickly by “bobbing” the coil up anddowninacontinuousmovementasyouadjusttheGROUNDcontrolwithyourthumb.


theGROUNDcontrolat10,you’reprobablyoverapieceofmetal.Moveandtryagain.

2. lfyougetasuddenbelltone,notprecededbyanincreasingaudio response, you’re probably in some very highlymineralizedsoilorsand.Insteadofloweringthecoiltoaninchortwoabovetheground(asinstep2above),stopjustbeforeyouhear thebell toneandgroundbalanceas instructed.Maintainthatcoilheightasyousearch.

3. Ifyoudon’tgetanaudioresponse,or ifthehumstaysthesame no matter where you set the GROUND controls asyoubobthecoilupanddown,you’reprobablyinanareawherethere’sverylittlegroundmineralization.JustleavetheGROUNDcontrolat“10”andbeginsearching.

4. Recheckyourgroundbalanceoccasionally.

29

TARGET RECOVERY Onceyou’veidentifiedandpinpointedatarget,yourobjectiveistorecoveritquicklyandneatly,leavingvirtuallynotraceofyourexcavation.Therearealmostasmanywaystodothisastherearetreasurehunters.Whateverworksforyouisgoodenoughaslongasyoudon’tbreakanylaws,leaveuncoveredholesordamagetheenvironmenteitheronlandorunderwater. Generallyspeaking,diversandbeachcombersdolittle,ifany,damage to the environment while recovering small targets.However,ifyouplantouseyourCZ-21onlawnsorinparks,yourtarget-recoverymethodcanbeveryimportant.

POINTS TO REMEMBER1. Whenindoubt,dig.IfyourCZ-21can’tquitedecide

whetheratargetisgoodorbad,digitup.2. Goodthingsoftencomeintwo’s.Oreventhree’s.

Once you’ve recovered a good target, alwaysrechecktheholeforasecondsignalandcarefullysearch the immediate area by walking slowlyaroundtheholetwoorthreetimes,overlappingyoursweepsinanever-wideningcircle.Always dig every suspicious sound in the vicinity of a good find.

3. Recheckyourholeevenifyourfindwastrash.Goodtargetsareoftenfoundbeneathbadones.

Whichever method you choose, remember that responsible treasure hunters take pride in their ability to leave soil and vegetation intact and undamaged. If you don’t want to see your right to treasure hunt restricted or even eliminated by government legislation, fill those holes and leave your hunting areas in better shape than when you arrived!

17

SEARCH MODES YourCZ-21hastwosearchmodes:Target-IDandAuto-Tune.Bothsearchmodesare“motion”modes,meaningthesearchcoilmustbeinmotiontodetectatarget.Unlikeothermetaldetectors,thediscriminationlevelhaslittle,ifany,effectonthedepthcapabilityoftheCZ-21.Note,however,thattheAllMetalAuto-TuneModehasawidersearchpatternandmaydetectalittledeeper.Depthisalsodeterminedbythesize,shapeandconductivityofthetargetaswellasthesensitivitysettingoftheCZ-21.

AUTO-TUNE MODE Set theDISCcontrol toAUTO-TUNE, foravery sensitive,wide-scan,AllMetal,motionsearchmode.Thismoderespondstoallmetaltargetsanddoesnothavetheabilityto identifyorrejectobjects.

TheAuto-TuneModeisusefulinthreesituations:

1. Non-Trashy Areas.TheAuto-TuneModehasawiderscanthantheIDMode,reducingchangesofmissinggoodtargets.SearchintheAuto-TuneModeuntilyoufindatarget.PinpointthetargetusingthePINPOINTbutton and then switch the DISC control to “0” toidentifythetargetinTarget-IDMode.TheDISCcontrolispositionedsothatyoucanswitchbackandforthbetween AUTO-TUNE and “0” with a flick of yourthumb.

2. Highly Mineralized Soil or Sand.TheAuto-TuneModeis recommended for black and gray beaches orhighly mineralized soil. Under these conditions itmaybenecessarytolowerthesensitivitylevelandsweepseveralinchesofftheground(seethenotesonp.14)Goldnuggetsaregenerallyfoundinhighlymineralized soil so thiswillbe the searchmodeofchoiceforprospectors.

3. All Metal Searching. Evidence recovery teams,archeologistsandprofessionalunderwatertreasurehunterswilloftenoptforthedeepsearch,AllMetalAuto-TuneMode.

28

productive.13. Look for repeatablesignalsanddon’twaste time

ondisappearingorone-waysignals. Ifyouhearagoodbeepbutcan’trepeatitwhenyougobackoverthetargetarea,orifitbeepsinonlyonesweepdirection,it’sprobablyapieceoftrash-somethingbelowyourdiscriminationsetting.

14. Ifyou’reinarelativelynon-trashyarea,trysearchingin the Auto-Tune Mode and then identifying yourtargetsbyswitchingtoDISC=“0.”You’llfindmoreanddeepertargetsthisway.And you’ll eliminate almost all false signals. Ifyou’rehavinganydifficultypinpointingor identifyingatargetintheIDMode,don’twasteanymoretime.Pushthepinpointbuttonforquickpinpointing, then release it foraccurateID

15. IfyourtargetdisappearswhenyougointothePinpointMode,you’veprobablytuneditoutbypressingthebuttontooclosetothetargetoroveranotherpieceofmetal.Tryagain,thistimetappingthePINPOINTbuttonoveranotherpieceofground.

16. Don’twastealotoftimediggingholesfortargetsyoucan’t find. If yourhole keepsgettingdeeperandwider,coveritupandgoon.Youmaybeoveraburiedpipeorsomeotherlargedeeptarget.

TARGET IDENTIFICATION

18

TARGET-ID MODE WhentheDISCcontrolissetinthe0-6positions,theCZ-21hastheabilitytoidentifymanytypesofsmalltargetsand,dependingonthediscriminationlevel,rejectorignoremostofthem.TobetterunderstandjusthowyourCZ-21respondstodifferenttargets,trythefollowing:

1. Scattersomesampletargetssuchascoins,rings,pulltabs,nailsandfoilonthegroundatleast18-inchesapart.Includesomelargetargetsaswell:jarlids,sodacans,etc.

2. SettheDISCcontrolat“0,”SENSat“5.”AdjusttheVOLUMEcontrolforacomfortablelevelwhenyouareoveralargetarget.

3. Ground balance the CZ-21 as in the “GroundBalance”procedure.

4. Hold the searchcoil about 2-inches above andparalleltothegroundandmoveitslowlybackandforthacrosseachsample.Remember,thecoilmustbeinmotiontogetaresponse.KeepinmindthatforaccurateTarget-ID,thecoilcentermustpassdirectlyoverthetarget.

5. Notethedifferentaudioresponsesoverthevarioustargets.YourCZ-21willrespondwithalowtoneovermostironorsteeltargets.Pulltabsandfoilwillgiveamedium-toneresponse.U.S.coinsgiveahightoneresponse.

6. Notethatanelongatedferrousobjectsuchasanailwillgiveyouadouble“beep”asyoucrossitfromendtoend,orasingle“beep”ifyoucrossitscenter.

7. Thesignalfromalargeorshallowtargetwilloverloadthecircuit,making target identification impossible.TheCZ-21 indicatesthisconditionwithadistinctivebelltone.Theoverloadwillnotharmthedetector;thesignalisjusttoostrongforinterpretation.Ifyouhear thebell tone, indicatingoverload,move thesearchcoil away from the target. Sweeping ata greater distance may allow for proper targetidentification.

SEARCH MODES

27

may fall into just about any category, the smallernuggetsfallingonthelowerhalfofthescale.Soifyou’renotjustlookingforU.S.coins,youshouldtestsome sample targets to determine what level ofdiscriminationyouwanttoworkatandwhattargetsyouwanttodig.

10. Here’saquickandeasywaytotellthedifferencebetweenasmall,shallowpieceoffoilandagoldring(orotherpossiblygoodtarget)withoutdigging:Ifyougetagoodsolid“FOIL”ID,setthesearchcoildownclosetothetargetandthenwhipitrapidlyacrossthetargetjustoncewithwhatcanbestbedescribedasa flickof thewrist. lf the targetdisappears, it’sprobablyasmall,shallowpieceoffoil.Ifnotdigitupitcouldbethatgoldringyou’relookingfor.Practicethisoversomefoiluntilyougetthehangofit.

11.Don’tbeafraidtoturnyoursensitivitydown.True,thehigherthesensitivity,thedeeperyourCZ-21willgo,andthemoreyou’llfind.Butthat’sonlyunderoptimumconditions.Ifyou’regettingalotoffalsesignals caused by electrical interference, groundmineralizationordensetrash,loweryoursensitivity.If you have to back it down to “4,” “3” or even“2”toeliminatethefalsing,doit.That’swhatyourSENSITIVITYcontrolisfor.You’llbesurprisedathowmuchyoumightfindinanareathatwouldotherwisebeunsearchableathighsensitivitylevels.

12. Set your discrimination at an appropriate level. Ifthere’s very little trash in the area, set it low, sayat irondiscrimination,anddigeverygood signal.If there isa lotof trashpresentandyou’remainlyinterestedincoins,setthediscriminationlevelhigh.You may even want to sacrifice nickels and zincpenniesinextremelytrashyareas.Ifyou’relookingforgoldrings,relics,artifacts,orsmallancientcoins,you’llhavetosetyourdiscriminationlevellow.Thebestwaytofindouthowlowistoburysomesampletargetsorjustdigeverythingforawhileuntilyougetafeelforwhichtargetclassificationswillbethemost


19

SEARCH MODES

8. Mostsilverringswillgiveahightone.Mostgoldringswillfallintothepulltab/foilmid-tonecategory.Thisisduetotheunavoidablefactthatmostgoldringsareconductivelysimilartoaluminumfoilandpulltabs.Somearemoreclosely identicaltotheU.S.5-centpiece; however, the CZ-21 does have the uniqueabilitytoseparatethosesignalsfromthealuminumtrashsignals.

9. NowincreasetheDISCcontrolto“1.”YouwillfindthattheCZ-21rejectsthesmall,irontargetsandnolongerrespondswithanaudiotone.

10. Continue to increase your DISC control, notingthatwitheachsuccessivestepup,moreandmoretargetsarerejected.AtDISC=“4”forexample,a“coins-only’modewillignoreiron,tabsandfoilwhileacceptingU.S.coins.

11. The Target-ID decal on the left underside of thecontrol housing graphically displays which itemsarerejectedandacceptedateachDISClevel.Forexample,“foil” isplacedbetweenDISC=“2”andDISC=“3.”Thismeansthatfoil isacceptedat“2”

Figure 8.TypicalCZ-21AudioResponses

26


coin.5.TheDISCcontrolprovidesincrementsofrejectionand

identificationwithinthemid-andhigh-tonetargetclassifications. Take a look at the Target-ID decalonyourcontrolhousingtoseewhatgetsrejectedatwhichDISCpoint.

6.Ifyou’regettingahigh-toneresponseforexample,youmaywellbeoveraU.S.coin.Ifyouwanttoknowwhatkindofcoinitis,advancetheDISCcontrolto“5.”YouknowfromtheIDdecalthatifyoulosethesignalyourtargetisprobablyanickel(orsomethingconductiveandverysimilar).Ifyoudon’tloseit,goupto“6.”Ifyouloseitat“6,”yourtargetmaywellbeaU.S.zincpenny.Ifyoustillgetasignal,yourtarget,ifitisindeedacoin,willprobablybeacopperpenny,anoldersilvercoinoracladcoin.Mostothersmalltargetswillbeignored.

7.Thesameistrueofthemid-tonetargets:Roundpulltabsarerejectedat“2,”foilat“3”andrectangulartabsat“4.”If,forexample,you’relookingforgoldringsinanextremelytrashyarea,youhavetheabilitytorejectatleastsomeofthetrash(likeiron,roundtabsandfoil)andstillgetthoseringsfallingintotherectangulartabandallcoincategories.Ofcourseyou’llhavetodigrectangulartabsaswell.

8.YourCZ-21willcorrectlyidentifymostofthetargetsonyourIDdecalmostofthetime,butitcanbefooled.Largetargets,unevengroundmineralization,goodtargets lyingnexttobadtargets,deeptargets,alloftheseandmorearesourcesoferror.Remember,theCZ-21isdesignedtoIDsmall,coin-sizedtargetsonly,andevensomeofthesemaybedeepenough,bent,damaged,orcorrodedenoughtogiveafalsesignal.

9. Youshouldalsorealizethattherearemanygoodtargets which are not classified by the CZ-21, asmentionedearlier.Goldrings,forexample,mayfallintoanycategoryexceptiron.Manyforeigncoins,especiallythenewones,mayIDasfoilorpulltab.Goldnuggets,dependingontheirsizeandshape,

20

andrejectedat“3.”12. Youmayexpectvaryingsignalsoverdifferenttargets

andatdifferentlevelsofdiscrimination.Notethatasyouprogressively increasethediscrimination level,moreandmoretargetsareeliminated.

13. Now switch the DISC control to the AUTO-TUNEpositionandnotethecompletelydifferentkindofresponse.No tone, justa smoother, solid responseovereverytarget.

Goodsearchtechniqueisveryimportanttosuccessfultreasurehunting.

1. MakesureyourCZ-21isproperlygroundbalanced.2. Decide which search mode you’re going to use.

Target-IDistherecommendedstartingpointwiththeDISCcontrolsetat“4”orAuto-Tune.

3. SetyourSENSITIVITYcontrol.Onlyexperiencewilltellyouhowtosetitineverysituation,butyou’llprobablywant to run itashighasyoucan.Recommendedstartingpoint:SENSITIVITY=“5.”Ifyou’reintheAuto-TuneMode,setitsothatyoucanjustbarelyhearaslightaudiohum.

4. AdjustyourVOLUMEcontrol.Rememberthatasettingabove“5”willamplifytheresponseoffainttargetssothattheysoundlikeashalloworlargetarget.Somesearchersprefernottouseitabove“5”sothattheaudio response corresponds directly to the depth

SEARCHING ON LAND OR SHALLOW WATER

SEARCH MODES

25

Target-IDwiththeCZ-21isquickandsimple.Justkeepinmindthesetworules:

1) YoumustbeintheTarget-IDMode.2) Thecenterof thesearchcoilmustpassdirectlyover the

target.

It’salwaysagoodideatowalkslowlyandoverlapyoursweeps.Butifyou’researchingalargeexpanseofnewterritory,youmaywanttowalkalittlefasterandnotoverlapyoursweepsasmuchuntilyoustartmakingafewgoodfinds.Then,slowdown,overlapyoursweepsandcovereveryinchofground. In trashyareas, to reducethe“masking”effectsof trashonnearbygoodtargets,useashorterandslowersweeppattern.

1. Once you’ve located a target, pinpoint its exactlocation as in the “Pinpointing” procedure. Since accurate ID is dependent on accurate pinpointing, it is recommended that you tap the PINPOINT button rather than try to pinpoint your target in either the Auto-Tune or Target-ID Mode.

2. Once you’ve pinpointed your target, tap thePINPOINT button again. If you’re searching in theAuto-TuneMode,switchovertoDISC=“0.”Ifyouare already in the Target-ID Mode, just leave theDISCcontrolwhereitis.

3. Movethecoiljustenough,left-right-left,acrossthetargettogetagood,solidsignal. Ifyounolongerget a signal after you’ve pinpointed your target,thenyou’reoversomethingthatfallsbelowtheDISCsettingyou’vechosen,andyourCZ-21 is rejectingit.

4. Once you’ve pinpointed your target and you’regettingagood,consistentsignal,you’veidentifiedoratleastclassifiedyourtarget.Alowtonemeansyourtargetisprobablyferrous.Amidtoneindicatesapulltaborfoil,andthehightoneindicatesaU.S.

TARGET IDENTIFICATIONPINPOINTING

21

and/or size of the target. Recommended startingpoint:VOLUME=“5,”thenadjustthevolumecontrolforcomfortoverloudtargets.

5. Oncethecontrolsareproperlyset,beginsearchingbywalkingslowlyandsweepingthesearchcoilinatightsemicircleasshowninFigure9.

6. Keepthecoilparalleltothegroundandasclosetothegroundaspractical.Thisisextremelyimportantformaximumcoverageanddepth.Ifyou’researchingonalawn,youmaysetthecoilrightonthegrassandlightly“scrub”it.

7. Overlap your sweeps by at least 50 percent.Remember, your coil’s search pattern is conical,andifyoudon’toverlapeachsweepyou’llmissthedeepertargets.

8. Searchinamethodicalmanner.Paycloseattentiontowhereyou’regoingandwhereyou’vebeen.

9. Keepthesearchcoilmovingatacomfortablerate.RememberthattheCZ-21isamotiondetectorandresponds only when the coil or target are moving(exceptinthePinpointMode.)

10. Takeyourtime.Ifyouwalktoofastyoucan’toverlapyoursweepsandyou’llmissa lotofground. Ifyouswingyourcoiltoofastyou’lllosesomesensitivitytodeepand/orsmalltargets.

11. Figure12onpage20showshowtheCZ-21searchcoilpattern is affected by sweep speed, groundmineralizationandsearchmode.


Figure 9. When the stem length isproperlyadjusted,theCZ-21isbalancedforsweepingatightsemicirclearoundtheoperator:widetotherightforrighthanders,widetotheleftforlefthanders.Besuretooverlapyoursweeps.

24

PINPOINTING TargetlocationisquickandeasyusingthetouchpadPinpointMode.Thecoildoesnothavetobemovingtogetaresponseinthismode.

1. WhetherinAuto-TuneorTarget-IDMode,oncethepresence of a target is indicated by the “beep-beep” of your CZ-21, simply move the coil awayfrom the target area, and with the coil lightly onthegroundorveryclose to it,press thePINPOINTbutton.

2. Asyoubringthecoilbackintothetargetarea,theaudiovolumeandpitchwillincrease.

3. When the pitch and volume are at their highestpoints, stop the coil and move it forward andbackwardacoupleoftimes,againstoppingoverthestrongestresponse.

4. Repeatonemoretime,sidetosideandfronttoback,stoppingoverthespotwhereyougetthemaximumvolumeandpitch.

NOTE: Large or shallow targets can give a wide signal in Pinpoint Mode. This can make pinpointing difficult. To pinpoint these large or shallow targets, find the edge of the wide signal in Pinpoint Mode. While over the edge of the signal, tap the pinpoint button again. This automatically decreases the sensitivity and narrows the width of the pinpoint signal. By repeating this procedure a few times over the edge of the wide signal, you can narrow the pinpoint signal and pinpoint your target.

22

Impact of sweep speed, ground mineralization, and search mode

1.Minimumdepth a.Verysloworveryfastsweepspeed b.Highlymineralizedsoil c.Target-IDsearchMode2.Averagedepth a.Moderatesweepspeed b.Moderatelymineralizedsoil c.Target-IDSearchMode3. Maximumdepth a.Moderatesweepspeed b.Non-mineralizedsoil c.Auto-TuneSearchMode4. MissedtargetManytargetswellwithintherangeofyourCZ-21willnotbedetectedunlessyouoverlapyoursweeps.

Figure 12.Searchcoildetectionpattern.

1

2

3 4


23

SEARCHING UNDERWATER TheCZ-21iswaterproofto250feet,anditoperatesthesameunderwater as on land. Some differences in search techniqueshouldbenoted.

1. Tune your CZ-21 underwater on the bottom asinstructedonpage6.ManydiversprefertousetheAuto-TuneMode,inwhichcaseyoumaywanttorunyourthresholdtoneslightlyhigherthanyouwouldonland.Ifyou’rewearingahood,you’llprobablyhavetoturnthevolumecontroltomaximum.

2.Keepthesearchcoilasfarawayfromyouandyourdivegearaspossible.Sweepthesearchcoilbackandforthinawidesemicircleinfrontofyoutocoverthebottominamethodicalmanner.

3.Keepthecoilparallelandasclosetothebottomaspossible.Overlapyoursweepsatleast50percent.

4. Recheck your ground balance every 5 to 10minutes.

5. Remember,observealltherulesofsafediving.6. Keep the searchcoil cable wound snugly around

thestemwhendivingaroundcoralorjaggedrockstokeepitfromsnagging.

7.Divers should make sure the drain holes in theheadset are unobstructed. Better yet, wait untilyou’reonthebottombeforeputtingyourheadseton,andtakeitoffbeforesurfacing.

8. Divers should also keep the searchcoil at least 2feetawayfromtheirbodies.Metalgear(weights,gauges,tanks,etc.)willbedetectedbytheCZ-21ifheldtooclose.

Figure 13.Moveslowly,keepingthe searchcoil away from yourdive gear and as close to thebottomaspossible

21

and/or size of the target. Recommended startingpoint:VOLUME=“5,”thenadjustthevolumecontrolforcomfortoverloudtargets.

5. Oncethecontrolsareproperlyset,beginsearchingbywalkingslowlyandsweepingthesearchcoilinatightsemicircleasshowninFigure9.

6. Keepthecoilparalleltothegroundandasclosetothegroundaspractical.Thisisextremelyimportantformaximumcoverageanddepth.Ifyou’researchingonalawn,youmaysetthecoilrightonthegrassandlightly“scrub”it.

7. Overlap your sweeps by at least 50 percent.Remember, your coil’s search pattern is conical,andifyoudon’toverlapeachsweepyou’llmissthedeepertargets.

8. Searchinamethodicalmanner.Paycloseattentiontowhereyou’regoingandwhereyou’vebeen.

9. Keepthesearchcoilmovingatacomfortablerate.RememberthattheCZ-21isamotiondetectorandresponds only when the coil or target are moving(exceptinthePinpointMode.)

10. Takeyourtime.Ifyouwalktoofastyoucan’toverlapyoursweepsandyou’llmissa lotofground. Ifyouswingyourcoiltoofastyou’lllosesomesensitivitytodeepand/orsmalltargets.

11. Figure12onpage20showshowtheCZ-21searchcoilpattern is affected by sweep speed, groundmineralizationandsearchmode.


Figure 9. When the stem length isproperlyadjusted,theCZ-21isbalancedforsweepingatightsemicirclearoundtheoperator:widetotherightforrighthanders,widetotheleftforlefthanders.Besuretooverlapyoursweeps.

24

PINPOINTING TargetlocationisquickandeasyusingthetouchpadPinpointMode.Thecoildoesnothavetobemovingtogetaresponseinthismode.

1. WhetherinAuto-TuneorTarget-IDMode,oncethepresence of a target is indicated by the “beep-beep” of your CZ-21, simply move the coil awayfrom the target area, and with the coil lightly onthegroundorveryclose to it,press thePINPOINTbutton.

2. Asyoubringthecoilbackintothetargetarea,theaudiovolumeandpitchwillincrease.

3. When the pitch and volume are at their highestpoints, stop the coil and move it forward andbackwardacoupleoftimes,againstoppingoverthestrongestresponse.

4. Repeatonemoretime,sidetosideandfronttoback,stoppingoverthespotwhereyougetthemaximumvolumeandpitch.

NOTE: Large or shallow targets can give a wide signal in Pinpoint Mode. This can make pinpointing difficult. To pinpoint these large or shallow targets, find the edge of the wide signal in Pinpoint Mode. While over the edge of the signal, tap the pinpoint button again. This automatically decreases the sensitivity and narrows the width of the pinpoint signal. By repeating this procedure a few times over the edge of the wide signal, you can narrow the pinpoint signal and pinpoint your target.

20

andrejectedat“3.”12. Youmayexpectvaryingsignalsoverdifferenttargets

andatdifferentlevelsofdiscrimination.Notethatasyouprogressively increasethediscrimination level,moreandmoretargetsareeliminated.

13. Now switch the DISC control to the AUTO-TUNEpositionandnotethecompletelydifferentkindofresponse.No tone, justa smoother, solid responseovereverytarget.

Goodsearchtechniqueisveryimportanttosuccessfultreasurehunting.

1. MakesureyourCZ-21isproperlygroundbalanced.2. Decide which search mode you’re going to use.

Target-IDistherecommendedstartingpointwiththeDISCcontrolsetat“4”orAuto-Tune.

3. SetyourSENSITIVITYcontrol.Onlyexperiencewilltellyouhowtosetitineverysituation,butyou’llprobablywant to run itashighasyoucan.Recommendedstartingpoint:SENSITIVITY=“5.”Ifyou’reintheAuto-TuneMode,setitsothatyoucanjustbarelyhearaslightaudiohum.

4. AdjustyourVOLUMEcontrol.Rememberthatasettingabove“5”willamplifytheresponseoffainttargetssothattheysoundlikeashalloworlargetarget.Somesearchersprefernottouseitabove“5”sothattheaudio response corresponds directly to the depth


SEARCH MODES

25

Target-IDwiththeCZ-21isquickandsimple.Justkeepinmindthesetworules:

1) YoumustbeintheTarget-IDMode.2) Thecenterof thesearchcoilmustpassdirectlyover the

target.

It’salwaysagoodideatowalkslowlyandoverlapyoursweeps.Butifyou’researchingalargeexpanseofnewterritory,youmaywanttowalkalittlefasterandnotoverlapyoursweepsasmuchuntilyoustartmakingafewgoodfinds.Then,slowdown,overlapyoursweepsandcovereveryinchofground. In trashyareas, to reducethe“masking”effectsof trashonnearbygoodtargets,useashorterandslowersweeppattern.

1. Once you’ve located a target, pinpoint its exactlocation as in the “Pinpointing” procedure. Since accurate ID is dependent on accurate pinpointing, it is recommended that you tap the PINPOINT button rather than try to pinpoint your target in either the Auto-Tune or Target-ID Mode.

2. Once you’ve pinpointed your target, tap thePINPOINT button again. If you’re searching in theAuto-TuneMode,switchovertoDISC=“0.”Ifyouare already in the Target-ID Mode, just leave theDISCcontrolwhereitis.

3. Movethecoiljustenough,left-right-left,acrossthetargettogetagood,solidsignal. Ifyounolongerget a signal after you’ve pinpointed your target,thenyou’reoversomethingthatfallsbelowtheDISCsettingyou’vechosen,andyourCZ-21 is rejectingit.

4. Once you’ve pinpointed your target and you’regettingagood,consistentsignal,you’veidentifiedoratleastclassifiedyourtarget.Alowtonemeansyourtargetisprobablyferrous.Amidtoneindicatesapulltaborfoil,andthehightoneindicatesaU.S.

TARGET IDENTIFICATIONPINPOINTING

19

SEARCH MODES

8. Mostsilverringswillgiveahightone.Mostgoldringswillfallintothepulltab/foilmid-tonecategory.Thisisduetotheunavoidablefactthatmostgoldringsareconductivelysimilartoaluminumfoilandpulltabs.Somearemoreclosely identicaltotheU.S.5-centpiece; however, the CZ-21 does have the uniqueabilitytoseparatethosesignalsfromthealuminumtrashsignals.

9. NowincreasetheDISCcontrolto“1.”YouwillfindthattheCZ-21rejectsthesmall,irontargetsandnolongerrespondswithanaudiotone.

10. Continue to increase your DISC control, notingthatwitheachsuccessivestepup,moreandmoretargetsarerejected.AtDISC=“4”forexample,a“coins-only’modewillignoreiron,tabsandfoilwhileacceptingU.S.coins.

11. The Target-ID decal on the left underside of thecontrol housing graphically displays which itemsarerejectedandacceptedateachDISClevel.Forexample,“foil” isplacedbetweenDISC=“2”andDISC=“3.”Thismeansthatfoil isacceptedat“2”

Figure 8.TypicalCZ-21AudioResponses

26


coin.5.TheDISCcontrolprovidesincrementsofrejectionand

identificationwithinthemid-andhigh-tonetargetclassifications. Take a look at the Target-ID decalonyourcontrolhousingtoseewhatgetsrejectedatwhichDISCpoint.

6.Ifyou’regettingahigh-toneresponseforexample,youmaywellbeoveraU.S.coin.Ifyouwanttoknowwhatkindofcoinitis,advancetheDISCcontrolto“5.”YouknowfromtheIDdecalthatifyoulosethesignalyourtargetisprobablyanickel(orsomethingconductiveandverysimilar).Ifyoudon’tloseit,goupto“6.”Ifyouloseitat“6,”yourtargetmaywellbeaU.S.zincpenny.Ifyoustillgetasignal,yourtarget,ifitisindeedacoin,willprobablybeacopperpenny,anoldersilvercoinoracladcoin.Mostothersmalltargetswillbeignored.

7.Thesameistrueofthemid-tonetargets:Roundpulltabsarerejectedat“2,”foilat“3”andrectangulartabsat“4.”If,forexample,you’relookingforgoldringsinanextremelytrashyarea,youhavetheabilitytorejectatleastsomeofthetrash(likeiron,roundtabsandfoil)andstillgetthoseringsfallingintotherectangulartabandallcoincategories.Ofcourseyou’llhavetodigrectangulartabsaswell.

8.YourCZ-21willcorrectlyidentifymostofthetargetsonyourIDdecalmostofthetime,butitcanbefooled.Largetargets,unevengroundmineralization,goodtargets lyingnexttobadtargets,deeptargets,alloftheseandmorearesourcesoferror.Remember,theCZ-21isdesignedtoIDsmall,coin-sizedtargetsonly,andevensomeofthesemaybedeepenough,bent,damaged,orcorrodedenoughtogiveafalsesignal.

9. Youshouldalsorealizethattherearemanygoodtargets which are not classified by the CZ-21, asmentionedearlier.Goldrings,forexample,mayfallintoanycategoryexceptiron.Manyforeigncoins,especiallythenewones,mayIDasfoilorpulltab.Goldnuggets,dependingontheirsizeandshape,

18

TARGET-ID MODE WhentheDISCcontrolissetinthe0-6positions,theCZ-21hastheabilitytoidentifymanytypesofsmalltargetsand,dependingonthediscriminationlevel,rejectorignoremostofthem.TobetterunderstandjusthowyourCZ-21respondstodifferenttargets,trythefollowing:

1. Scattersomesampletargetssuchascoins,rings,pulltabs,nailsandfoilonthegroundatleast18-inchesapart.Includesomelargetargetsaswell:jarlids,sodacans,etc.

2. SettheDISCcontrolat“0,”SENSat“5.”AdjusttheVOLUMEcontrolforacomfortablelevelwhenyouareoveralargetarget.

3. Ground balance the CZ-21 as in the “GroundBalance”procedure.

4. Hold the searchcoil about 2-inches above andparalleltothegroundandmoveitslowlybackandforthacrosseachsample.Remember,thecoilmustbeinmotiontogetaresponse.KeepinmindthatforaccurateTarget-ID,thecoilcentermustpassdirectlyoverthetarget.

5. Notethedifferentaudioresponsesoverthevarioustargets.YourCZ-21willrespondwithalowtoneovermostironorsteeltargets.Pulltabsandfoilwillgiveamedium-toneresponse.U.S.coinsgiveahightoneresponse.

6. Notethatanelongatedferrousobjectsuchasanailwillgiveyouadouble“beep”asyoucrossitfromendtoend,orasingle“beep”ifyoucrossitscenter.

7. Thesignalfromalargeorshallowtargetwilloverloadthecircuit,making target identification impossible.TheCZ-21 indicatesthisconditionwithadistinctivebelltone.Theoverloadwillnotharmthedetector;thesignalisjusttoostrongforinterpretation.Ifyouhear thebell tone, indicatingoverload,move thesearchcoil away from the target. Sweeping ata greater distance may allow for proper targetidentification.

SEARCH MODES

27

may fall into just about any category, the smallernuggetsfallingonthelowerhalfofthescale.Soifyou’renotjustlookingforU.S.coins,youshouldtestsome sample targets to determine what level ofdiscriminationyouwanttoworkatandwhattargetsyouwanttodig.

10. Here’saquickandeasywaytotellthedifferencebetweenasmall,shallowpieceoffoilandagoldring(orotherpossiblygoodtarget)withoutdigging:Ifyougetagoodsolid“FOIL”ID,setthesearchcoildownclosetothetargetandthenwhipitrapidlyacrossthetargetjustoncewithwhatcanbestbedescribedasa flickof thewrist. lf the targetdisappears, it’sprobablyasmall,shallowpieceoffoil.Ifnotdigitupitcouldbethatgoldringyou’relookingfor.Practicethisoversomefoiluntilyougetthehangofit.

11.Don’tbeafraidtoturnyoursensitivitydown.True,thehigherthesensitivity,thedeeperyourCZ-21willgo,andthemoreyou’llfind.Butthat’sonlyunderoptimumconditions.Ifyou’regettingalotoffalsesignals caused by electrical interference, groundmineralizationordensetrash,loweryoursensitivity.If you have to back it down to “4,” “3” or even“2”toeliminatethefalsing,doit.That’swhatyourSENSITIVITYcontrolisfor.You’llbesurprisedathowmuchyoumightfindinanareathatwouldotherwisebeunsearchableathighsensitivitylevels.

12. Set your discrimination at an appropriate level. Ifthere’s very little trash in the area, set it low, sayat irondiscrimination,anddigeverygood signal.If there isa lotof trashpresentandyou’remainlyinterestedincoins,setthediscriminationlevelhigh.You may even want to sacrifice nickels and zincpenniesinextremelytrashyareas.Ifyou’relookingforgoldrings,relics,artifacts,orsmallancientcoins,you’llhavetosetyourdiscriminationlevellow.Thebestwaytofindouthowlowistoburysomesampletargetsorjustdigeverythingforawhileuntilyougetafeelforwhichtargetclassificationswillbethemost


17

SEARCH MODES YourCZ-21hastwosearchmodes:Target-IDandAuto-Tune.Bothsearchmodesare“motion”modes,meaningthesearchcoilmustbeinmotiontodetectatarget.Unlikeothermetaldetectors,thediscriminationlevelhaslittle,ifany,effectonthedepthcapabilityoftheCZ-21.Note,however,thattheAllMetalAuto-TuneModehasawidersearchpatternandmaydetectalittledeeper.Depthisalsodeterminedbythesize,shapeandconductivityofthetargetaswellasthesensitivitysettingoftheCZ-21.

AUTO-TUNE MODE Set theDISCcontrol toAUTO-TUNE, foravery sensitive,wide-scan,AllMetal,motionsearchmode.Thismoderespondstoallmetaltargetsanddoesnothavetheabilityto identifyorrejectobjects.

TheAuto-TuneModeisusefulinthreesituations:

1. Non-Trashy Areas.TheAuto-TuneModehasawiderscanthantheIDMode,reducingchangesofmissinggoodtargets.SearchintheAuto-TuneModeuntilyoufindatarget.PinpointthetargetusingthePINPOINTbutton and then switch the DISC control to “0” toidentifythetargetinTarget-IDMode.TheDISCcontrolispositionedsothatyoucanswitchbackandforthbetween AUTO-TUNE and “0” with a flick of yourthumb.

2. Highly Mineralized Soil or Sand.TheAuto-TuneModeis recommended for black and gray beaches orhighly mineralized soil. Under these conditions itmaybenecessarytolowerthesensitivitylevelandsweepseveralinchesofftheground(seethenotesonp.14)Goldnuggetsaregenerallyfoundinhighlymineralized soil so thiswillbe the searchmodeofchoiceforprospectors.

3. All Metal Searching. Evidence recovery teams,archeologistsandprofessionalunderwatertreasurehunterswilloftenoptforthedeepsearch,AllMetalAuto-TuneMode.

28

productive.13. Look for repeatablesignalsanddon’twaste time

ondisappearingorone-waysignals. Ifyouhearagoodbeepbutcan’trepeatitwhenyougobackoverthetargetarea,orifitbeepsinonlyonesweepdirection,it’sprobablyapieceoftrash-somethingbelowyourdiscriminationsetting.

14. Ifyou’reinarelativelynon-trashyarea,trysearchingin the Auto-Tune Mode and then identifying yourtargetsbyswitchingtoDISC=“0.”You’llfindmoreanddeepertargetsthisway.And you’ll eliminate almost all false signals. Ifyou’rehavinganydifficultypinpointingor identifyingatargetintheIDMode,don’twasteanymoretime.Pushthepinpointbuttonforquickpinpointing, then release it foraccurateID

15. IfyourtargetdisappearswhenyougointothePinpointMode,you’veprobablytuneditoutbypressingthebuttontooclosetothetargetoroveranotherpieceofmetal.Tryagain,thistimetappingthePINPOINTbuttonoveranotherpieceofground.

16. Don’twastealotoftimediggingholesfortargetsyoucan’t find. If yourhole keepsgettingdeeperandwider,coveritupandgoon.Youmaybeoveraburiedpipeorsomeotherlargedeeptarget.


16

GROUND BALANCING

4.Withalittlepractice,youshouldbeabletogroundbalance quickly by “bobbing” the coil up anddowninacontinuousmovementasyouadjusttheGROUNDcontrolwithyourthumb.


theGROUNDcontrolat10,you’reprobablyoverapieceofmetal.Moveandtryagain.

2. lfyougetasuddenbelltone,notprecededbyanincreasingaudio response, you’re probably in some very highlymineralizedsoilorsand.Insteadofloweringthecoiltoaninchortwoabovetheground(asinstep2above),stopjustbeforeyouhear thebell toneandgroundbalanceas instructed.Maintainthatcoilheightasyousearch.

3. Ifyoudon’tgetanaudioresponse,or ifthehumstaysthesame no matter where you set the GROUND controls asyoubobthecoilupanddown,you’reprobablyinanareawherethere’sverylittlegroundmineralization.JustleavetheGROUNDcontrolat“10”andbeginsearching.

4. Recheckyourgroundbalanceoccasionally.

29

TARGET RECOVERY Onceyou’veidentifiedandpinpointedatarget,yourobjectiveistorecoveritquicklyandneatly,leavingvirtuallynotraceofyourexcavation.Therearealmostasmanywaystodothisastherearetreasurehunters.Whateverworksforyouisgoodenoughaslongasyoudon’tbreakanylaws,leaveuncoveredholesordamagetheenvironmenteitheronlandorunderwater. Generallyspeaking,diversandbeachcombersdolittle,ifany,damage to the environment while recovering small targets.However,ifyouplantouseyourCZ-21onlawnsorinparks,yourtarget-recoverymethodcanbeveryimportant.

POINTS TO REMEMBER1. Whenindoubt,dig.IfyourCZ-21can’tquitedecide

whetheratargetisgoodorbad,digitup.2. Goodthingsoftencomeintwo’s.Oreventhree’s.

Once you’ve recovered a good target, alwaysrechecktheholeforasecondsignalandcarefullysearch the immediate area by walking slowlyaroundtheholetwoorthreetimes,overlappingyoursweepsinanever-wideningcircle.Always dig every suspicious sound in the vicinity of a good find.

3. Recheckyourholeevenifyourfindwastrash.Goodtargetsareoftenfoundbeneathbadones.

Whichever method you choose, remember that responsible treasure hunters take pride in their ability to leave soil and vegetation intact and undamaged. If you don’t want to see your right to treasure hunt restricted or even eliminated by government legislation, fill those holes and leave your hunting areas in better shape than when you arrived!

15

BOBBING METHOD1.Turn disc knob to “AUTO-TUNE”, this puts you into

Auto-Tune Mode. Set the “SENSITIVITY” control sothatyoujustbarelyhearathresholdhum.

Holdthesearchcoil6to12-inchesoverthegroundandat least3-feetawayfromanymetalobjects.DonotusethePINPOINTbuttonduringanypartofthisprocedure.

2. Lowerthecoilaninchortwoabovethegroundandthenquicklyraiseit.Notethatasyoulowerthecoil,thetonedisappearsthengetslouderasyouraiseitandfinallyreturnstonormalwhenyoustopit6to12inchesabovetheground.Conversely,ifyousettheGROUNDcontrolto“1,”thethresholdhumwillgetlouderasyou lowerthecoilanddisappearwhenyouraiseit.

3. YourobjectivenowistoadjusttheGROUNDcontrolso that there is no change, or only a minimumchangeinthethresholdhum,asyoumovethecoilupanddown.StartbyloweringtheGROUNDcontrolto“9.”Lowerthecoilandraiseitagain.Oneofthreethingswillhappentoyourthresholdhum:a) It will fade again as you lower the coil and

increase as you raise it. Continue to lower thegroundbalancesettinginsmallincrementsuntilthethresholdhumremainsthesame(orchangesverylittle)asthecoilisloweredandraised.

b) lt will get louder as you lower the coil and gosilent as you raise it. You have gone past thecorrect ground-balance setting. Increase theground-balance level (rotating the controlcounterclockwise)insmallincrementsuntilthereislittleornochangeinthethresholdlevel.

c) Thehumwill remain the same,or if itchangesslightly, the change is the same whether youlower or raise the coil. Your CZ-21 is properlygroundbalanced,andyouarereadytobeginsearching.

GROUND BALANCING

30

RECOVERY TOOLS1. Sandscoopsdesignedespeciallyforbeachcombers

andshallow-watertreasurehuntersareavailableatmetaldetectoroutlets.

2. Divers use a variety of recovery tools, dependingontheconditionoftheseabedorlakebottom.Asturdydiveknifewillsufficeinpackedmudorsmallrocks.Mostdiversprefertousetheirhandsinloosesand.Professionaltreasurehuntersoftenuseanairhose fed by a surface compressor to blow awayloosesand,gravelormud.

3. Forlandrecovery,asturdyhuntingknifewitha5-inchbladewillsufficeinmostsoils.Ahighquality,doubleedged“survival”knifeisanevenbetterchoice(andmoreexpensive)becauseitwillbealmostimpossibletobendorbreak.CAUTION: Using a jack knife without a locking blade is a good way to lose a finger.

4. Aheavyduty,bluntscrewdriveriscommonlyusedfor shallowtargetswherediggingor“plugging” isobjectionable.

14

QUICK G.B. METHOD Thiswillprobablybeyourmethodofchoiceinallbutthemostdifficultofgroundconditions.It’sfast,easyandaccurate.YoucanusethismethodineithertheAuto-TuneorTarget-IDMode.

1. WithGROUNDcontrolat“10”holdyoursearchcoil6to12-inchesofftheground.Makesureyou’reatleast3-feetawayfromanymetalobjects.

2. TapthePINPOINTbuttonandlowerthesearchcoiltotheground.RotatetheGROUNDcontrolclockwiseuntilyouhearanaudiotone.Thenbackofftotheexactpointwherethetonedisappears.

3. Always ground balance your CZ-21 in the areasyou intend to search, whether it’s on land orunderwater.


theGROUNDcontrolat“10,”you’reprobablyoverapieceofmetal.Moveandtryagain.

2. If yougeta suddenbell tone that isnotprecededbyanincreasing audio response as you lower the coil, you’reprobablyinsomeveryhighlymineralizedsoilorsand.Inthiscase,it’sbesttousethe“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.

GROUND BALANCING

31

FALSE SIGNALS A“falsesignal”occurswhenatargetisincorrectlyidentified.Forexample,asmall,broken-offpieceofpulltabmaybeidentifiedasanickel.Orasmall,deepcoin,especiallyinmineralizedsoil,may read “IRON.” The more sensitive the metal detector, theharderitisnottohavefalsesignals.YourCZ-21isanextremelysensitivemachine,soyou’reboundtoencounterthem.Herearesomeofthemostfrequentsourcesoffalsesignalsandwhattodoaboutthem:

1. Trash: The most common source of false signals.Largeor irregularpiecesof trashmaygivegood,consistent,high-tonesignals.Inthiscaseyou’llusuallyhavetodigthetarget,butwithexperienceyou’llbeabletoeliminatemanyofthelargetargetswhosesizewillbeobviouswhenyougointothePinpointMode.Anotherfalsesignalresponsemaybea“one-way”ordisappearingsignal.You’llsweepoverthetargetandgetagoodsignalbutnothingon thereturn sweep. When this happens you’re over atarget that theCZ-21can’tpositively identifyduetoitssize,shape,depthoralloy.TheCZ-21mayIDitasacoinwhensweptfromonedirectionandirononthereturnsweep. IfyourDISCcontrol is setat“0”you’llhear firstahightone(coin)andthenalowtone(iron).OrifyourDISCcontrolissethigher,torejectiron,you’llhearthehightonesweepingonewayandnothingtheotherway. Quiteoftenthesignalwilljustdisappearandyouwon’tbeabletofinditnomatterwhichdirectionyousweep.Theseone-wayanddisappearingsignalsareusuallytrash,andasageneralruleyoushouldignorethem. If you have any doubts, tap the PINPOINTbuttontogetanaccuratelocation,andthenIDthetarget.Ifyougetagoodrepeatabletone,digit.Ifyoustillgetaone-waysignaloritdisappears,moveon.Also,ifyourpinpointinglocationisdifferentthan

13

When your CZ-21 QuickSilver is properly “ground balanced,”it will have only a minimal response to ground mineralization.PreciseadjustmentoftheGROUNDcontroliscriticalforoptimumperformance.Thehigherthedegreeofgroundmineralizationorthehigherthesensitivitysetting,themorecriticalitistohaveyourmachineproperlygroundbalanced.OnceyouadjustitineithertheAuto-TuneModeorTarget-IDMode,youcanswitchbackandforth between the two modes without resetting. Recheck yoursetting occasionally as you search because ground conditionsoftenchangerapidly. Ifyouhavedifficultygroundbalancing,tryreducingyoursensitivitylevelormovingtoanotherspotjustincaseyouareoveraburiedpieceofmetal.Insomeareasofhighgroundmineralizationyoumaynotbeabletousethetouchpadmethod.

batterystrength. GOODBATTERIES:Loud,highpitchedtone WEAKBATTERIES:Soft,lowpitchedtoneor“ticking”sound BATTERIESNEEDREPLACING:Notone Duringuse,thespeakervolumewillfadeandbecome

nearlyinaudiblebeforethedetectorperformanceiscompromisedbyweakbatteries.

5. PINPOINT: ActivatingthePINPOINTfeaturewiththecenter-positionedbuttonentersaNO-MOTIONDetectionMode.Inthismodeofoperation,thedetectorwillemitamonotonehumwhenevermetalentersthecoil’sfieldofdetection.Tousepinpoint,PRESSthebutton.Thepinpointbuttonwillnotdeflectwithpressure;youwillfeelnomovementinthebutton.A2ndpressofthebuttonwillreturnyoutoyourpreviousmotiondetectionmode.

A moderate pressure,applied briefly to thecenterof thebutton, isrequired.

The button requires a2-secondwaitbetweenpresses.

GROUND BALANCING

CONTROL PANEL

32

yourIDlocation,yourtargetisprobablyapieceofiron. Reducingyoursensitivity level, takingshorter,slowersweeps,orincreasingthediscriminationlevelmayreducethenumberoffalsesignalscausedbytrash.

2. Deep Targets: Deep targets, just barely withinthe rangeof theCZ-21,maybemisidentified.Forexample,adeepcoinmay IDas iron,oradeeppieceofironmayIDasacoin.There’snotmuchyoucandotoavoidthisotherthantouseyourPinpointModetoensurethatyouareexactlycenteredoverthetarget.Oryoumayreduceyoursensitivitylevelsoyoujustignoretheverydeepesttargets.

3. Electrical Interference:Constantchattercausedbyradio/TVstations,power linesornearbydetectorsoperatingatoneoftheCZ-21searchfrequencies.Thebestsolutionistomoveawayfromthesourceof the interference. You may also try one of thefollowing:

a) SwitchtotheAuto-TuneMode.b) Reduceyoursensitivitylevel.c) Slowdownyoursweepspeed.

Iftheinterferenceisonlyminimalandyouwishtocontinuesearchinganyway,testyourCZ-21overaknowntargettomakesureit’soperatingproperly.Insidesomebuildings,electricalinterferencemaybesobadthatyou’llhavetogooutsidejusttobenchtestyourCZ-21.

4. Highly Mineralized Soil: May cause a bell toneresponse or constant false signals. Check yourground balance (See page 11). Try lowering thesensitivityand/orincreasingthediscriminationlevel.SearchintheAUTO-TUNEMode.Re-groundbalanceusing the“bobbing”method(Seepage13). Ifallelse fails, raise thesearchcoil justhighenoughforthe false signals todisappearand then sweepatthatconstantheight.

5. Black Sand: Same as Highly Mineralized Soil

FALSE SIGNALS

12

1

2

5

3

4

CONTROL PANEL1. VOLUME/OFF: Power on-off and volume control.

Volumeisgraduallyincreasedfrom1-5settings.From5-10,loud-targetresponseisheldconstantwhilefainttargetscontinuetogetlouder.

2. DISC:Inthe0-6positions,theCZ-21isintheTarget-IDMode,which is a silent, no-threshold, Motion-DiscriminationModeofoperationwiththeabilitytoidentifyandthenignore (“reject”)oracceptmanykindsof smallmetaltargets.IntheAUTO-TUNEposition,theCZ-21isinanAllMetalMode.Inthismode,theCZ-21hasaslightlywideranddeepersearchpattern,however,itlackstheabilitytodiscriminateoridentifyandrejecttargets.

3. GROUND:Usedtoelectronicallycanceltheeffectsofground mineralization. Proper use of this control willminimizefalsegroundsignalsandensurethattheCZ-21isoperatingatitsmaximumpotentialinjustaboutanygroundconditionincludingwetoceansand.

4. SENS (Sensitivity)/BATT TEST: SENSITIVITY:Thehigherthesetting,themoresensitive

thedetector.Startatlowersensitivitysettinguntilyougainexperiencewiththedetector.(3)isthesuggesteddefaultsettingforsaltwaterhunting.(7)issuggestedforfreshwater.

BATTTEST:Totestbatteries 1.Reducevolumetolowlevel 2.Putonheadphones 3.RotateSENSknobtoBATTTESTposition 4.RotateVOLUMEknobtoincreasevolume Asyourotateto“10”thevolumeandtonewillindicate

Figure 7.ControlPanel

33

FALSE SIGNALS

above.6. Wet Salt Water Sand:YourCZ-21shouldbeableto

handlemostwetsandeasilyunless it’sblack.SeeBlackSandabove.Youshouldabletoreducethenumber of false signals caused by salt water bylowering your sensitivity and making sure you aregroundbalancedproperly.

7. Hot Rocks:Somerocks,byvirtueoftheirhighmineralcontent, will be seen by metal detectors as ametaltarget.IntheAuto-TuneMode,theCZ-21willrespondtomosthotrocks.Prospectorsmustlearntodistinguishbetweenhotrockandnuggetsounds.IntheTarget-IDMode,certaintypesofhotrockswillbeautomaticallyrejectedatDISC=“0”andvirtuallyallotherhotrockswillbeidentifiedasironorrejectedatDISC=“1.”

8. “End of Swing:”Silentsearchmotiondetectorsoftengivefalsesignalsattheedgesofthesearchpattern,justasthecoilstopsandbeginsacceleratingbacktowardtheoperator.Ifthisisaproblem,tryoneormoreofthefollowing:a) Keepyoursweepsmooth,slowandlowtothe

ground.b) Checkyourgroundbalance.c) Loweryoursensitivity.d) Makesureyoursearchcoil isproperlysecured

andthecableconnectorisfirmlytightened.9. Digging Tool:Ifyou’recarryingametalsandscoop,

diggingknife,orscrewdriver,holditbehindyourbackorkeepitaboveyourwaist.YourCZ-21issensitiveenoughtosoundoffeachtimeyousweepthecoilbeneathit.

10. Elongated Ferrous Objects: If you get two beepsclosetogetherandcan’tfindeithertarget,youmaybenearanailorsomeother long,ferrousobject.Fortunately, in most cases your CZ-21 will identifytheseobjectscorrectly.Inallcases,thetargetwillbe

11

Holdunitfirmlyandseparatehandle,beingcarefulnottodropthecontrolunitanddamageit.Placeunitbatterysidedownwithbatterycoverontabletop,oraflatstablesurfaceandgrasptheunitfirmlyinonehandandthehandlegripfirmlyintheother.

“Hip-mounting” the CZ-21 in this manner takes about half theweightoffthehandleandallowsthelandorshallow-watertreasurehuntertosearchmuchlongerwithoutarmfatigue.

1. Slidethebeltclipintogroovesonthebottomofthecontrolhousing.Thisisasnugfit,andyou’llhavetobendtheclipslightly.

2. Unwrap justenoughof thecoilcable toallowforsearching.

3. Slipthecontrolhousingontoyourbelt,leftsideforrighthanders,rightsideforlefthanders.

NOTE: Because of the extreme sensitivity of the CZ-21 searchcoil, hip-mounting the control housing may produce a false signal when the searchcoil reaches the end of its arc (on the side that the control box is attached to your belt). Depending on your stem length and how high you have the housing hip-mounted, the searchcoil may actually detect the housing.

WARRANTY NOTICE:Damage to coil cable at housing connection is not warrantable if damaged by excessive force.If hip-mounting, please leave slack in the cable so as not to yank the cable from the housing at the end of your sweep.

SETTING UP

34

betweenthebeeps,orifyousweepatrightanglestoyouroriginaldirection,you’llreceiveasinglebeepdirectlyoverthetarget.

a)Shallowcoins(atornearthesurface)orcoinsonedgewillgiveadoublebeep:oneoneithersideofthecoin,justlikeanail.Likethenail,thecoinonedgewillgivea singlebeepdirectlyoverthetargetifyousweepatrightanglestoyouroriginalposition.

b) A coin lying in the ground at an angle (asshown)maygiveasingletargetresponsebutmaypinpointseveralinchesawayfromitstruelocation.Checkaroundtheinsideedgesofthehole.Ifyoustilldon’tfindit,enlargetheholebyacoupleofinches.

c)A large,deep target, likeaburiedpipeoramanholecoverat2feet,willoftengiveagood,strongcoinsignal. Ifyou’vedugdownafootandwidenedyourholeseveraltimes,giveup.

FALSE SIGNALS

11. Practice! Practice over known targets. Practiceground balancing. Practice pinpointing. Rereadtheappropriatepartofthismanualifyou’rehavingproblems.

10

Caution: Hip-mounting the CZ-21 control housing is not recommended for underwater use. The searchcoil cable may become entangled with a submerged object, making it difficult for the diver to resurface quickly in case of emergency.

SETTING UP FOR HIP-MOUNTING For nearly-effortless treasure hunting, the control housing iseasily removed fromthehandleandattachedto thebeltclip(included).

INSTRUCTION FOR REMOVAL OF CZ-21 FROM HANDLE

WARNING DO NOT DO THIS

Donotpushonunitfromtheback(batteryside.).Doingthiswillmostlikelycauseunittoreleasesuddenlyandflyoff,impactingonthecontrolknobsonthefloor,anddamagingtheunit.THISTYPEOFDAMAGEWILLVOIDYOURWARRANTY

SETTING UP

35

TheCZ-21ispoweredbyfour,9-volttransistorbatterieslocatedintherearsectionofthecontrolhousing.Thebatteriesaresealedofffromtheelectronicssothataccidentalwaterleakageintothebatterycompartmentwillnotdamagethecircuitry.Toreplacethebatteries:

1. Removethebatterydoorbypartiallyunscrewingthetwoknurledthumbscrews.Theknurledknobsare“captivescrews”andarenottobecompletelyremovedfromthebatterydoor.

2. RemovethebatterypackfromtheControlHousing.It’snotnecessarytodisconnectthebattery leadconnector.Beverycarefulnottoputanyunduestrainonthebatteryleads.

3. Removethebatteriesfromthebatterypack,andinstall fresh alkaline batteries. You may also userechargeableNiCads,butexpectabouthalfthebatterylife.

4. Insert the battery pack into the Control Housing.Withyourfinger,pushthetopofthebatterypack(withtheleads)intotheControlHousingfirst,thenletthebottomfollow.

5. Make sure the O-ring and both sealing surfacesareclearandfreeofdebrisbeforereinstallingthebatterycover.THIS IS EXTREMELY IMPORTANT!

See page 36 for gasket orientation.6. Finger tighten the thumb screws, then carefully

tightenagain1/4turnwithacoinorscrewdriver.

DO NOT MIX OLD AND NEW BATTERIES

BATTERY REPLACEMENT

Figure 6.Youcanhip-mountyourCZ-21byslidingthecontrolhousingfromthehandleandattachingittoyourbelt.Thisreducestheweightofthestem,creatingnearlyeffortlesshunting.

9

Control housing

Shortened stem length

Extra, coiled cable

3. Youshouldnowbeabletomoveintoyour“search”positionbyleaningslightlyforwardandraisingthesearchcoilnomorethan2-inchesabovetheground.Yourarmshouldstillbestraight,andthecoilshouldbeparalleltotheground,about12-inchesinfrontofyourfoot.Thecoilanglemayhavetobeslightlyreadjustedatthispoint.

SETTING UP FOR DIVING Unlike most VLF metal detectors, the CZ-21 works well in saltwater.Thiscapability,alongwithitsdeep-seekingsensitivity,makesitidealforunderwatertreasurehuntingandwreckdiving.TheCZ-21iswaterprooftoadepthof250feet.Remember,alwayspracticesafedivingmethods.

When diving with your CZ-21, use the shortest stem length possible, with the extra cable wrapped tightly around the stem, as closely as possible to the control housing. Never hip-mount your control housing while diving.

1. Adjustthestemlengthasshortasyoucanwithouthavingthesearchcoildetectyourdivinggear.

2. Adjust the searchcoilparallel to the seabed, riverorlakebottom.

3. Makesureextracableiscoiledtightlyontheupperstemascloselyaspossible to thecontrolhousing,with justenoughslacknearthesearchcoiltoallowittoswivelasfarasitcanineitherdirection.Toomuchloosecablenearthesearchcoilmaygeneratefalsesignals.

4. Removethetetheredearphoneplugsforrapidpressureequalizationasyoudiveandreturntothesurface.

SETTING UP

Figure 5.

36

BATTERY REPLACEMENT

VERY IMPORTANTFollowtheseinstructionscarefullytoavoidgettingwater inthebatterycompartment.

1. Tuckinthewires.Donotpinchtheminthesealwhenclosing.

2. Thebatterydoorwillcapturethebatteryholderandself-centeritasyouinstallthedoor.

3. TightentheknobsSECURELY. a. Useacoin. b. TightenbyhandFIRMLY. UsemaximumMANUALforce. c. DoNotuseatool. d. DoNotuseascrewdriver. Torque Specification is 8 in-pounds.

4. Ifyouhaveremovedthegasket,seepage36forinstallationinstructions.An improperly installed gasket = a water leak!

5. Submergethedetectorinwaterfor1/2hour. a. Removefromwater. b.Dryoffthedetector c. Removethebatterydoor d. Verifythatnowaterhasentered. This step is necessary to insure that you are applying enough force to the screws.

6. Ifyoucannottightenthescrewssecurelybyhand,thenuseascrewdriver.

a. Tightenthescrewamaximum additionalrotationof15°beyondthe

hand-tightenedposition.

7. Lithium grease is installed between thecontact surfaces of the thumb-screw andinsertinthecase.

a.Donotwipeoffthegrease.b.Withusage,thegreasemaywearoff.c.Without grease, the thumb-screw may seize up after

tightening.Ifthishappens,reapplyasmallamountoflithiumgreasebetweenthecontactsurfaces.

15°

8

SETTING UP FOR LAND OR SHALLOW WATER Puttheheadphonesaroundyournecktokeepthemoutofthewaywhilemakingthefollowingadjustments:

1. Adjust the stem length and coil angle so thesearchcoilrestsflatonthegroundabout6-inchesinfrontandslightlytotherightofyourfoot(totheleftofyourleftfootifyou’relefthanded).

2. Leaveenoughslackinthecoilcabletoallowthecoiltoswivelasfarasitcanineitherdirection.Thecoilwingnutshouldbetightenoughtopreventthecoilfrommoving.

SETTING UP

ASSEMBLY

Figure 4. Whensearchingonlandorinshallowwater,keepyourarmstraightandyoursearchcoilnomorethan2-inchesabovetheground.

AdjustableArmrest

Figure 3.

37

MAINTENANCE YourCZ-21doesn’trequirealotofcare.It’sbuiltwithhigh-qualitymaterials,andit’swaterprooftoadepthof250feet.Butthereareafewthingsyoushoulddotokeepitinpeakoperatingcondition.

Handling 1. Donotdropyourdetector.2. Donotdropthehousingdirectlyontotheknobs. Damage caused by impact is not warrantable.

Storage 1. If you’re not going to be using it for awhile, take

thebatteriesout.Aciddamagecausedbyleakingbatteriescanbesevere.

Damage from battery acid is not warrantable.2. Avoidextremetemperatures.Don’t leaveit inside

aclosedcarsittinginthesunorevenworse,inthetrunkofacar.

Cleaning 1. Sandanddirtbetweenthecoil“ears”andlowerstem

willgrindawaytheearsandstem.2. Theheadphoneearpadsmayberemoved,rinsed

and squeezed out to remove any sea water saltbuildup.

3. Sand,siltorfinedirtbetweentheupperandlowerstemswillcausethelowerstemtofreezeup.Rinsefrequently.

4. Rinse the lowerareaunder the twoknobson thecontrolpanelthoroughlyafteruseinsaltwater.

5. Alwayscleananddrytheareaaroundthebatterycoversealbeforeopening.

Battery Compartment 1. Removethebatterycoverandcheckforwater

aftereachuseinwater.2. Keepthesealingsurfacesofthebatterycover

andcontrolhousingcleanandfreeofscratchesandnicks.Removeandcleantheneoprenegasketfrequently.Lubricatingthegasketisnotrecommended.Cleanthegasketwithmildsoapandwarmwateronly.Donotusepetroleumjellyorsiliconegreaseatanytime.

3. Re-installgasketcorrectly(seeillustrationnextpage)

Screw

ScrewHole

UpperStem

7

ASSEMBLY

Submersible Headphones

Control Housing

Target-ID Decal

Foam Hand Grip

7-foot Searchcoil Cable

Fiberglass Upper StemArmrest Screw

Battery Access Panel

8-inchSpider

coil

NylonWing Nut

Fiberglass Reinforced Nylon Lower Stem

Headphone Plug

Adjustable Armrest

YourFisher®CZ-21requireslittleassembly.Handleitcarefully,careforitregularly,anditwillgiveyouyearsofdependableservice.

1. Remove the headphone, handle and searchcoilassembliesfromthebox.Becarefulnottoputanystrainonthecableconnections.

2. Adjust the lower stem to theapproximate lengthyouwillbeusing:extendedforstand-upuseorasshortaspossiblefordiving.Toextendthelowerstem,pushinthespringlock,pulloutthelowerstemandletthespringlocksnapintoanotherhole.

3. Unwindjustenoughcabletoattachthesearchcoiltothelowerstem.

4. Removetheboltandwingnutfromthesearchcoil.Lineuptheholeinthelowerstembetweenthetwoholesinthesearchcoil“ears.”Attachthecoiltothestemwiththeboltandwingnutandfingertighten.

5. Thearmrestmayberepositionedformaximumcomfortbyremovingthearmrestscrew,slidingthearmresttothenextscrewholeandre-insertingthearmrestscrew.

Control Panel

Figure 2. CZ-21QuicksilverDetector. 38

BATTERY DOOR GASKET: ORIENTATIONCROSS SECTION

Therubbergasket,whichfitsintothebatterydoor,mustbeinstalledwith the larger protrusion (B), toward the battery door.

Ifyouremovethegasketforcleaning,re-installcorrectly.Improperinstallationwillresultinleakage.

Figure 16. Batterydoorgasketinstallation

CASE BATTERYDOOR

A = Small side to caseB = Large side to battery door

A B

6

2. Adjustthevolumecontrolforacomfortablevolumewhen the coil is passed over a large, shallowtarget.

3. Travel slowly, overlap your sweeps and keep thesearchcoilmoving.Remember,you’reina“motion”search mode, and the coil must be in motion todetectatarget.

4. Whenyougetagood,repeatablesignal,pinpointthetarget.


39

Where To Use Your Metal Detector In The U.S.

National Forest and Federal Lands—Metaldetectingisallowedonlybyspecialpermitacquiredfromthefederalgovernment.Eachareahasadistrictoffice.Corps of Engineers, Lakes, Shorelines and Lands—Permissionhasbeengrantedonlyonpre-disturbedsites,suchasbeachesandattachedswimmingareas.NewCorpslakesandlandsmustbeokayedbythemainofficeoftheArmyCorpsofEngineers.Eachareahasadistrictoffice.State Parks and Lands—Somestateparksareopentometaldetecting,butsomearenot.Alwayscheckwiththeparkrangerbeforeattemptingtouseyourdetector.Bureau of Land Management (BLM) Lands—Someareasareopenformetaldetecting,andsomearenot.Alwayscheckwiththedistrictoffice.City or County Park Lands—Mostareopentometaldetectingunlessnoticeisgivenbyasignorcityordinance.Whenindoubt,alwayscheckwiththecity’sParksandRecreationDepartment.Public School Grounds—Mostareopentometaldetectingunlessnoticeisgivenbyasign,cityordinance,lawenforcementofficial,orschoolemployee.Youshouldalwayscheckwiththeschoolofficefirst.Privately Owned Lands (Private Property)—Permissionrequired.Itisalwaysbesttohavethepermissioninwriting.Historically Marked Lands or Sites—Metaldetectingisnotallowed.Don’teventhinkaboutit.

TheCZ-21issuppliedwithpermanentlyattachedwaterproofheadphones.Theycannotberemovedbytheuser.Iftheyaredamagedorneedservice,youmustreturntheentiredetectorassemblytothefactoryrepairorreplacement.

Headphonesimprovesbatterylife,andpreventsthesoundsfromannoyingbystanders.Italsoallowsyoutohearsubtlechangesinthesoundmoreclearly,particularlyifsearchinginanoisylocation.Forsafetyreasons,donotuseheadphonesneartrafficorwhereotherdangersarepresent.Thisdeviceistobeusedwithinterconnectingcables/headphonecablesshorterthanthreemeters.

Using Headphones

5


Factory Pre-Set “Turn-On-and-Go” Marks YourCZ-21QuickSilverissimpletooperate.Evenso,westronglyrecommendthatyoureadthisentiremanual.You’llbeabletotuneyourCZ-21toyourspecificneedsandconditions.

1. Set all the controls to the red “Turn-On-and-Go”pre-set: GROUND =5 DISC =4 SENSITIVITY =3 VOLUME =5

Thisputsyouina“coins-only”mode,andyou’rereadytostartsearching.KeepinmindthattheGROUNDsettingof“5” isprobablynot theoptimumsettingforthegroundyou’researching.Thesensitivitylevelissetlowtoreducefalsesignalscausedbygroundmineralization.

Pre-set Audio Boost mark at “5”

Salt-water Pre-set SENSITIVITY at “3”

Pre-set DISCRIMINATION at “4”

Pre-set GROUND at “5”

Figure 1. Factorypre-setturn-on-and-gomarks(circledinredorblueonyourCZ-21controlpanel)cangetyouupandrunningimmediately.

40

SPECIFICATIONSLength..................... Extended.................................................... 50”................................... Collapsed................................................... 30”

WeightComplete(withheadset)..............5lb...11oz.6lb...1oz.5.4lb.HandleandSearchcoil............... 2lb...6.9oz.2lb...12.9oz.2.1lb.ControlHousing....................................................................... 2.8lbs.

Frequency............... 1.Dual,VLFSearch5KHzand15KHz................................... 2.AudioTargetResponseIronID....................... 200Hz(Lowtone)FoilandTabID........ 450Hz(Midtone)CoinID1KHz(Hightone)Auto-Tune................ 500Hz-1KHz(V.C.O.)Pinpoint................... 500Hz-1KHz(V.C.O.)

OperatingModes1.Auto-Tune.... VLF-Motion,AllMetalwiththresholdtone2.Target-ID..............................................................VLF-SlowMotion,............................................................... SilentSearchDiscrimination3.Pinpoint................................................ VLF,AllMetal,NoMotion

Searchcoil................ Type...........................Concentric,Co-Planar................................... Diameter.................................. 8”,10.5”or5”................................... Shielding........................................... 100%ESI................................... Interchangeable.......................................No...................................

Headset...................................................Waterproof,PiezoElectricInterchangeable............................................................................No

GroundBalance.......................................... TouchPad,Manualor.................................................................. “Preset”ControlMarkingsHip-mountableControlHousing..................................................YesSaltWater/FreshWaterOperation..............................................YesLandOperation.............................................................................YesSubmersible....................................................................... to250feet

8”Coil 10.5” Coil5”

Fresh-water sensitivity Pre-set at “7”

ABOUT YOUR DETECTOR

4

10. Searchcoils: The CZ-21 comes with the 8” coil asstandard equipment, but can also be customorderedwiththe10”coil.Allcoilsarepermanentlyattached.

11. Balanced, Comfortable and hip-mountable: Cushioned armrest, soft foam grip and a controlhousingthatslipsoffthehandleandontoyourbelt.

12. Salt Water Compensation: Saltwater iselectricallyconductive, and therefore induces a strongsignal in the searchcoil. Unlikemostothermetaldetectors, the CZ-21 uses Fourier Domain signalanalysistocancelthesaltwatersignal.Undermostconditionsyouwillnotexperienceanyfalsesignalsfromsaltwater. Whenworkinginthesurfzoneathighsensitivitysettingsyoumayhearanoccasional“whisper”whichiseasilyignored.

13. Easy-to-Use:Justpickitup,setthecontrolontheredcirclesandstartsearchingina“coins-only”mode.Or formaximumperformance,adjust thecontrolsfor your own specific situation.

Read this instruction manual thoroughly, practice often and you’re in for some exciting treasure hunting. Dropusalineifyouhaveanyquestions,commentsorgoodfindstotellusabout.Inthemeantime...

HappyHunting,Fisher®ResearchLabs

41

Batteries.................... SeparatelySealedCompartment...........Yes................................... Type.......................................... (4)9VAlkaline................................... LifeAlkaline......................................35-55hrs.................................... NiCads..............................................10-20hrs.

OperatingTemperature..... 32°-110°F

FaintTargetAudioBoost.... YesManualThresholdTuning.... InAuto-TuneModeTarget-ID............................... Threetonesplusbelltoneforlarge,............................................... shallowtargets,plus7presetDISC................................................ controlsettings

SPECIFICATIONS

Notes:

1. Subjecttoimprovementormodificationwithoutnotice.2. Approximate.3. PulsegateUnipolarAudioProcessing.AdvancedFisher®circuitrywhichallows

silentoperationbelow“audiothresholdtone”withnolossinsensitivity.4. TheCZ-21isa“motion”detectorwhileinthesearchmode.TheSearchcoil

mustbemovingatleastslightlytodetectatarget.5. Electro-Static-Insulatedtoeliminatecertaintypesoffalsesignals.

3

ABOUT YOUR DETECTOR Your CZ-21 QuickSilver is an all-purpose metal detectorengineeredforland,beach,saltandfresh-watertreasurehunters.Herearesomeimportantfeatures:

1. Leak-proof:Submersibleto250feet.2. 3-Tone Target-ID:Alowtoneforiron,amid-tonefor

pulltabs,foilandmostgoldrings,andahightoneforU.S.coins,silverringsandsomegoldrings.

3. Depth:PatentedFourierdomainsignalanalysis.Two deep-seeking, ground-compensating VLF signals(oneat5KHzandoneat15KHz)providetwiceasmuchtargetinformationforaccurateanalysisandidentification.

4. Two Search Modes: A silent running, slow motionTarget-IDModeandahot,Auto-TuneModeforAllMetalsearching.

5. V.C.O. No-Motion Pinpointing: Tapthepinpointbuttonandtheaudiotoneincreasesinpitchandvolumeasthecenterofthecoilapproachesthetarget.

6. Big-Target Alert: The CZ-21 circuits may overloadon large, shallow targets. A distinctive bell toneimmediatelywarnsyouthatthetargetistoolargetoidentify.

7. Faint-Target Audio Boost:Asyouincreasethevolumelevelpast“5”,strongtargetsoundsremainatafixedvolumewhilefaint,deep-targetsoundscontinuetogetlouder.

8. Quick Manual Ground Balance: Tap the pinpointbuttonandlowerthecoiltotheground.Thensetthegroundcontroljustbelowtheaudiotoneandyouarepreciselytunedforon-siteconditions.

9. Separately Sealed Battery Compartment:Protectstheelectronicsfromaccidentalflooding.

TREASURE HUNTERS’ CODE OF ETHICSLET’S PRESERVE OUR TREASURED SPORT!

Lawsgoverningtheuseofmetaldetectorsarebecomingmoreandmorecommon.Inmanycountries,theuseofmetaldetectorsisillegalorseverelyrestricted.Don’tletthishappeninyourarea.

•AlwayscheckFederal,State,Countyandlocallawsbeforesearching.

•Respectprivatepropertyanddonotenterprivatepropertywithouttheowner’spermission.

•Takecaretorefillallholesandleavenodamage.•Removeanddisposeofanyandalltrashandlitter

found.•Appreciateandprotectourinheritanceofnaturalre-

sources,wildlifeandprivateproperty.•Actasanambassadorforthehobby,usethoughtful-

ness,considerationandcourtesyatalltimes.•Neverdestroyhistoricalorarchaeologicaltreasures.•Alltreasurehuntersmaybejudgedbytheexampleyou

set;alwaysconductyourselfwithcourtesyandconsid-erationofothers

42

CONTENTSAbout Your Detector ..............................................................pg. 3

Condensed Operating Instructions ......................................pg. 5

Headphones ...........................................................................pg. 6

Assembly ................................................................................pg. 7

Setting Up ................................................................................pg. 8

For Land or Shallow Water ..................................................pg. 8

For Diving .............................................................................pg. 9

For Hip-mounting ................................................................pg. 10

Control Panel ..........................................................................pg. 12

Turn on Procedure ..................................................................pg. 13

Ground Balancing ..................................................................pg. 13

Touch Pad ............................................................................pg. 14

Bobbing................................................................................pg. 15

Search Modes .........................................................................pg. 17

Auto-Tune ............................................................................pg. 17

Target-ID ..............................................................................pg. 18

Searching on Land or in Shallow Water ...............................pg. 20

Searching Underwater ...........................................................pg. 23

Pinpointing ..............................................................................pg. 24

Target Identification ...............................................................pg. 25

Target Recovery .....................................................................pg. 29

Recovery Tools ........................................................................pg. 30

False Signals ............................................................................pg. 31

Battery Replacement .............................................................pg. 35

Maintenance ..........................................................................pg. 37

Battery Door Gasket: Orientation .........................................pg. 38

Where To Use Your Metal Detector In the U.S. .....................pg. 39

Specifications .........................................................................pg. 40

Treasure Hunters’ Code of Ethics ..........................................pg. 42

Warranty ..................................................................................pg. 4343

2-Year Limited WarrantyRegister your warranty on-line for a chance to win a

FREE DETECTOR.For details, visit www.fisherlab.com

TheCZ-21metaldetectoriswarrantedagainstdefectsinmaterialsandworkmanshipundernormalusefortwoyearsfromthedateof

purchasetotheoriginalowner.

Damageduetoneglect,accidentaldamageormisuseofthisproductisnotcoveredunderthiswarranty.Decisionsregardingabuseormisuseof

thedetectoraremadesolelyatthediscretionofthemanufacturer.

Proof of purchase is required to make a claim under this warranty.

NOTE TO CUSTOMERS OUTSIDE THE U.S.A.Thiswarrantymayvaryinothercountries,checkwithyour

distributorfordetails.Warrantydoesnotcovershippingcosts.

LiabilityunderthisWarrantyislimitedtoreplacingorrepairing,atouroption,themetaldetectorreturned,shippingcostprepaid,toFisher®

Labs.ShippingcosttoFisher®Labsistheresponsibilityoftheconsumer.

AccordingtoFCCpart15.21ChangesorModificationsmadetothisdevicenotexpresslyapprovedbythepartyresponsibleforcompliancecouldvoid

theusersauthoritytooperatethisequipment.ThisdevicecomplieswithFCCPart15SubpartBSection15.109ClassB.

Toreturnyourdetectorforservice,pleasefirstcontactFisher®LabsforaReturnAuthorization(RA)Number.ReferencetheRAnumberonyourpackageandreturnthedetectorwithin15daysofcallingto:

Fisher Research Labs, Inc.1465-H Henry Brennan Dr.

El Paso, TX 79936Phone: 915-225-0333 ext. 118

Warrantycoveragedoesnotincludethecostoftransportingthedetectorbacktoanownerwhoislocated

outsideoftheUnitedStatesofAmerica.

CZ-21 QuickSilver

Operating Manual

Deep Search, Land and Underwater, Target-ID Metal Detector

MCZ21B Rev.2 092513

ATTENTION:Damagedotoneglectoraccidentaldamageis

notwarrantable

IMPACT WARNING:Impacttothefrontknobs,thefrontedge,orthe

casewillcausethefrontplatetofracture,resultinginleakage.

Such damage is not warrantable.

CABLE STRESS:Ifyouhip-mounttheCZ-21,leaveslackinthecable

soasnottopullcabletauntatendofsweep.Damagetocoilcableathousingconnectionis not warrantableifaresultofrepetitive,excessivestress.

Copyright©2010byFisher®ResearchLabs,Inc.

Allrightsreserved,includingtherighttoreproducethisbook,orpartsthereof,inanyform.

PublishedbyFisher®ResearchLabs,Inc.Fisher®isaregisteredtrademarkofFisher®ResearchLabs,Inc.

www.fisherlab.com1465-HHenryBrennanDr.,ElPaso,TX79936•(915)225-0333

MADEINUSA

cz-21 quicksilver - teknetics rev 2 09.25.13 - reader.… · for u.s. coins, silver rings and some...

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