Fisher Research Labs CZ-21 QuickSilver Bedienungsanleitung

CZ-21 QuickSilver

Operating Manual

Deep Search, Land and Underwater, Target I.D. Metal Detector

FISHER RESEARCH LABS

MCZ21B 060110

ATTENTION:

Damage do to neglect or accidental damage is

not warrantable

IMPACT WARNING:

Impact to the front knobs, the front edge, or the

case will cause the front plate to fracture, resulting

in leakage.

Such damage is not warrantable.

CABLE STRESS:

If you hip-mount the CZ-21, leave slack in the cable

so as not to pull cable taunt at end of sweep.

Damage to coil cable at housing connection is not

warrantable if a result of repetitive, excessive stress.

or parts thereof, in any form.

Published by Fisher Research Labs, Inc.

Fisher® is a registered trademark of Fisher Research Labs, Inc.

www.sherlab.com

1465-H Henry Brennan Dr., El Paso, TX 79936 • (915) 225-0333

CONTENTS

About Your Detector ..............................................................pg. 1

Condensed Operating Instructions ......................................pg. 3

Headphones ...........................................................................pg. 4

Assembly................................................................................pg. 5

Setting Up ................................................................................pg. 6

For Land or Shallow Water..................................................pg. 6

For Diving .............................................................................pg. 7

For Hipmounting..................................................................pg. 8

Control Panel ..........................................................................pg. 10

Turn on Procedure ..................................................................pg. 11

Ground Balancing ..................................................................pg. 11

Touch Pad............................................................................pg. 12

Bobbing................................................................................pg. 13

Search Modes.........................................................................pg. 15

Auto Tune.............................................................................pg. 15

Target I.D..............................................................................pg. 16

Searching on Land or in Shallow Water ...............................pg. 18

Searching Underwater ...........................................................pg. 21

Pinpointing ..............................................................................pg. 22

Target Identification ...............................................................pg. 23

Target Recovery .....................................................................pg. 27

Recovery Tools........................................................................pg. 28

False Signals............................................................................pg. 29

Battery Replacement .............................................................pg. 33

Maintenance ..........................................................................pg. 35

Battery Door Gasket: Orientation .........................................pg. 36

Where To Use Your Metal Detector In the U.S. .....................pg. 37

Specifications .........................................................................pg. 38

Treasure Hunters’ Code of Ethics ..........................................pg. 40

2-Year Limited Warranty

The CZ-21 metal detector is warranted against defects in materials

and workmanship under normal use for two years from the date of

purchase to the original owner.

Damage due to neglect, accidental damage or misuse of this product is

not covered under this warranty. Decisions regarding abuse or misuse of

the detector are made solely at the discretion of the manufacturer.

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

NOTE TO CUSTOMERS OUTSIDE THE U.S.A.

This warranty may vary in other countries, check with your

distributor for details.

Warranty does not cover shipping costs.

Liability under this Warranty is limited to replacing or repairing, at our

option, the metal detector returned, shipping cost prepaid, to Fisher

Labs. Shipping cost to Fisher Labs is the responsibility of the consumer.

According to FCC part 15.21 Changes or Modifications made to this device

not expressly approved by the party responsible for compliance could void

the users authority to operate this equipment.

To return your detector for service, please first contact Fisher Labs for a

Return Authorization (RA) Number. Reference the RA number on your

package and return the detector within 15 days of calling to:

Fisher Research Labs, Inc.

1465-H Henry Brennan Dr.

El Paso, TX 79936

Phone: 915-225-0333 ext.118

Warranty coverage does not include the cost of transporting

the detector back to an owner who is located

outside of the United States of America.

ABOUT YOUR DETECTOR

Your CZ-21 QuickSilver is an all-purpose metal detector

engineered for land, beach, salt and fresh-water treasure hunters.

Here are some important features:

1. Leakproof: Submersible to 250 feet.

2. 3-Tone Target I.D.: A low tone for iron, a mid-tone for

pull tabs, foil and most gold rings, and a high tone

for U.S. coins, silver rings and some gold rings.

3. Depth: Patented Fourier domain signal analysis. Two

deep-seeking, ground-compensating VLF signals

(one at 5 KHz and one at 15 KHz) provide twice as

much target information for accurate analysis and

identication.

4. Two Search Modes: A silent running, slow motion

target I.D. mode and a hot, autotune mode for all-

metal searching.

5. VCO No-Motion Pinpointing: Tap the pinpoint button

and the audio tone increases in pitch and volume

as the center of the coil approaches the target.

6. Big-Target Alert: The CZ-21 circuits may overload

on large, shallow targets. A distinctive bell tone

immediately warns you that the target is too large

to identify.

7. Faint-Target Audio Boost: As you increase the volume

level past “5”, strong target sounds remain at a xed

volume while faint, deep-target sounds continue to

get louder.

8. Quick Manual Ground Balance: Tap the pinpoint

button and lower the coil to the ground. Then set

the ground control just below the audio tone and

you are precisely tuned for on-site conditions.

9. Separately Sealed Battery Compartment: Protects

the electronics from accidental ooding.

TREASURE HUNTERS’ CODE OF ETHICS

LET’S PRESERVE OUR TREASURED SPORT!

Laws governing the use of metal detectors are becoming

more and more common. In many countries, the use of metal

detectors is illegal or severely restricted. Don’t let this happen in

your area.

• Always check Federal, State, County and local laws

before searching.

• Respect private property and do not enter private

property without the owner’s permission.

• Take care to rell all holes and try not to leave any

damage.

• Remove and dispose of any and all trash and litter

found.

• Appreciate and protect our inheritance of natural re-

sources, wildlife and private property.

• Act as an ambassador for the hobby, use thoughtful-

ness, consideration and courtesy at all times.

• Never destroy historical or archaeological treasures.

• All treasure hunters may be judged by the example you

set; always conduct yourself with courtesy and consid-

eration of others

ABOUT YOUR DETECTOR

10. Search Coils: The CZ-21 comes with the 8” coil as

standard equipment, but can also be custom

ordered with the 10” coil. All coils are permanently

attached.

11. Balanced,Comfortableand Hipmountable:Cushioned

arm rest, soft foam grip and a control housing that

slips off the handle and onto your belt.

12. Salt Water Compensation: Salt water is electrically

conductive, and therefore induces a strong

signal in the searchcoil. Unlike most other metal

detectors, the CZ-21 uses Fourier Domain signal

analysis to cancel the salt water signal. Under most

conditions you will not experience any false signals

from salt water. When working in the surf zone at

high sensitivity settings you may hear an occasional

“whisper” which is easily ignored.

13. Easy to Use: Just pick it up, set the control on the red

circles and start searching in a “coins-only” mode.

Or for maximum performance, adjust the controls

for your own specic situation.

Read this instruction manual thoroughly, practice often and

you’re in for some exciting treasure hunting. Drop us a line if you

have any questions, comments or good nds to tell us about. In

the meantime . . .

Happy Hunting,

Fisher Research Labs

Batteries.................... Separately Sealed Compartment........... Yes

................................... Type.......................................... (4) 9V Alkaline

................................... Life Alkaline ......................................35-55 hrs.

................................... Nicads10-20 hrs.

Operating Temperature ..... 32° - 110° F

Faint Target Audio Boost .... Yes

Manual Threshold Tuning.... In Autotune Mode

Target I.D. ............................. Three tones plus bell tone for large,

............................................... shallow targets, plus 7 preset DISC.

............................................... control settings

SPECIFICATIONS

Notes:

1. Subject to improvement or modication without notice.

2. Approximate.

3. Pulsegate Unipolar Audio Processing. Advanced Fisher circuitry which allows

silent operation below “audio threshold tone” with no loss in sensitivity.

4. The CZ-21 is a “motion” detector while in the search mode. The search coil

must be moving at least slightly to detect a target.

5. Electro-Static-Insulated to eliminate certain types of false signals.

CONDENSED OPERATING INSTRUCTIONS

Factory Pre-Set “Turn-On-and-Go” Marks

Your CZ-21 QuickSilver is simple to operate. Even so, we strongly

recommend that you read this entire manual. You’ll be able to

tune your CZ-21 to your specic needs and conditions.

1. Set all the controls to the red “Turn-On-and-Go”

pre-set:

GROUND = 5

DISC = 4

SENSITIVITY = 3

VOLUME = 5

This puts you in a “coins-only” mode, and you’re ready

to start searching. Keep in mind that the GROUND

setting of “5” is probably not the optimum setting

for the ground you’re searching. The sensitivity level

is set low to reduce false signals caused by ground

mineralization.

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. Factory pre-set turn-on-and-go marks (circled in red or

blue on your CZ-21 control panel) can get you up and running

immediately.

SPECIFICATIONS

Length ..................... Extended .................................................... 50”

................................... Collapsed ................................................... 30”

Weight

Complete (with headset)..............5 lb...11 oz. 6 lb...1 oz. 5.4 lb.

Handle and Search Coil.............. 2 lb...6.9 oz. 2 lb...12.9 oz. 2.1 lb.

Control Housing....................................................................... 2.8 lbs.

Frequency ............... 1. Dual, VLF Search 5 KHz and 15 KHz

................................... 2. Audio Target Response

Iron I.D. ..................... 200 Hz (Low tone)

Foil and Tab I.D. ...... 450 Hz (Mid tone)

Coin I.D. 1 KHz (High tone)

Autotune ................. 500 Hz - 1 KHz (VCO)

Pinpoint ................... 500 Hz - 1 KHz (VCO)

Operating Modes

1. Autotune ..... VLF-Motion, all-metal with threshold tone

2. Target I.D .............................................................VLF-Slow Motion,

............................................................... Silent Search Discrimination

3. Pinpoint .................................................VLF, All-Metal, No Motion

Search Coil............... Type ...........................Concentric, Co-Planar

................................... Diameter .................................. 8”, 10.5” or 5”

................................... Shielding ........................................... 100% ESI

................................... Interchangeable .......................................No

...................................

Headset................................................... Waterproof, Piezo Electric

Interchangeable............................................................................No

Ground Balance .......................................... Touch Pad, Manual or

.................................................................. “Preset” Control Markings

Hipmountable Control Housing................................................... Yes

Salt Water/Fresh Water Operation .............................................. Yes

Land Operation............................................................................. Yes

Submersible....................................................................... to 250 feet

8” Coil 10.5” Coil 5”

Fresh-

water

sensitivity

Pre-set

at “7”

2. Adjust the volume control for a comfortable volume

when the coil is passed over a large, shallow

target.

3. Travel slowly, overlap your sweeps and keep the

search coil moving. Remember, you’re in a “motion”

search mode, and the coil must be in motion to

detect a target.

4. When you get a good, repeatable signal, pinpoint

the target.

CONDENSED OPERATING INSTRUCTIONS

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

National Forest and Federal Lands—Metal detecting is allowed

only by special permit acquired from the federal government.

Each area has a district ofce.

Corps of Engineers, Lakes, Shorelines and Lands—Permission has

been granted only on predisturbed sites, such as beaches and

attached swimming areas. New Corps lakes and lands must be

okayed by the main ofce of the Army Corps of Engineers. Each

area has a district ofce.

State Parks and Lands—Some state parks are open to metal

detecting, but some are not. Always check with the park ranger

before attempting to use your detector.

Bureau of Land Management (BLM) Lands—Some areas are

open for metal detecting, and some are not. Always check with

the district ofce.

City or County Park Lands—Most are open to metal detecting

unless notice is given by a sign or city ordinance. When in

doubt, always check with the city’s Parks and Recreation

Department.

Public School Grounds—Most are open to metal detecting

unless notice is given by a sign, city ordinance, law enforcement

ofcial, or school employee. You should always check with the

school ofce rst.

Privately Owned Lands (Private Property)—Permission required. It

is always best to have the permission in writing.

Historically Marked Lands or Sites—Metal detecting is not

allowed. Don’t even think about it.

Using headphones (not supplied) improves battery

life, and prevents the sounds from annoying

bystanders.

It also allows you to hear subtle changes in the

sound more clearly, particularly if searching in

a noisy location. For safety reasons, do not use

headphones near trafc or where other dangers

are present. This device is to be used with

interconnecting cables/headphone cables shorter

than three meters.

Using Headphones

ASSEMBLY

Submersible

Headphones

Control Housing

Target I.D. Decal

Foam Hand Grip

7-foot Search Coil Cable

Fiberglass Upper Stem

Arm-rest Screw

Battery Access Panel

8-inch

Spider

coil

Nylon

Wing Nut

Fiberglass Reinforced

Nylon Lower Stem

Headphone

Plug

Adjustable Arm Rest

Your Fisher CZ-21 requires little assembly. Handle it carefully, care

for it regularly, and it will give you years of dependable service.

1. Remove the headphone, handle and search coil

assemblies from the box. Be careful not to put any strain

on the cable connections.

2. Adjust the lower stem to the approximate length you

will be using: extended for stand-up use or as short as

possible for diving. To extend the lower stem, push in the

spring lock, pull out the lower stem and let the spring lock

snap into another hole.

3. Unwind just enough cable to attach the search coil to

the lower stem.

4. Remove the bolt and wing nut from the search coil. Line

up the hole in the lower stem between the two holes in

the search coil “ears.” Attach the coil to the stem with

the bolt and wing nut and nger tighten.

5. The arm rest may be repositioned for maximum comfort

by removing the arm-rest screw, sliding the arm rest to the

next screw hole and re-inserting the arm-rest screw.

Control Panel

Figure 2. CZ-21 Quicksilver Detector.

BATTERY DOOR GASKET: ORIENTATION

CROSS SECTION

The rubber gasket, which ts into the battery door, must be

installed with the larger protrusion (B), toward the battery door.

If you remove the gasket for cleaning, re-install correctly.

Improper installation will result in leakage.

Figure 16. Battery door gasket installation

CASE BATTERY

DOOR

= Small side to case

= Large side to battery door

A B

SETTING UP FOR LAND OR SHALLOW WATER

Put the headphones around your neck to keep them out of

the way while making the following adjustments:

1. Adjust the stem length and coil angle so the search

coil rests at on the ground about 6 inches in front

and slightly to the right of your foot (to the left of your

left foot if you’re left handed).

2. Leave enough slack in the coil cable to allow the

coil to swivel as far as it can in either direction. The

coil wing nut should be tight enough to prevent the

coil from moving.

SETTING UP

ASSEMBLY

Figure 4.

When searching on land

or in shallow water, keep

your arm straight and your

search coil no more than 2

inches above the ground.

Adjustable Arm Rest

Figure 3.

MAINTENANCE

Your CZ-21 doesn’t require a lot of care. It’s built with high-quality

materials, and it’s waterproof to a depth of 250 feet. But there are a

few things you should do to keep it in peak operating condition.

Handling

1. Do not drop your detector.

2. Do not drop the housing directly on to the knobs.

Damage caused by impact is not warrantable.

Storage

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

the batteries out. Acid damage caused by leaking

batteries can be severe.

Damage from battery acid is not warrantable.

2. Avoid extreme temperatures. Don’t leave it inside

a closed car sitting in the sun or even worse, in the

trunk of a car.

Cleaning

1. Sand and dirt between the coil “ears” and lower stem

will grind away the ears and stem.

2. The headphone ear pads may be removed, rinsed

and squeezed out to remove any sea water salt

build up.

3. Sand, silt or ne dirt between the upper and lower

stems will cause the lower stem to freeze up. Rinse

frequently.

4. Rinse the lower area under the two knobs on the

control panel thoroughly after use in salt water.

5. Always clean and dry the area around the battery

cover seal before opening.

Battery Compartment

1. Remove the battery cover and check for water

after each use in water.

2. Keep the sealing surfaces of the battery cover

and control housing clean and free of scratches

and nicks. Remove and clean the neoprene

gasket frequently. Lubricating the gasket is not

recommended. Clean the gasket with mild soap

and warm water only. Do not use petroleum jelly or

silicone grease at any time.

3. Re-install gasket correctly (see illustration next page)

Screw

Screw Hole

Upper Stem

Control housing

Shortened stem length

Extra, coiled

cable

3. You should now be able to move into your “search”

position by leaning slightly forward and raising the

search coil no more than 2 inches above the ground.

Your arm should still be straight, and the coil should

be parallel to the ground, about 12 inches in front

of your foot. The coil angle may have to be slightly

readjusted at this point.

SETTING UP FOR DIVING

Unlike most VLF metal detectors, the CZ-21 works well in salt

water. This capability, along with its deep-seeking sensitivity, makes

it ideal for underwater treasure hunting and wreck diving. The CZ-21

is waterproof to a depth of 250 feet. Remember, always practice

safe diving methods.

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 hipmount your

control housing while diving.

1. Adjust the stem length as short as you can without having

the search coil detect your diving gear.

2. Adjust the search coil parallel to the sea bed, river or

lake bottom.

3. Make sure extra cable is coiled tightly on the upper stem

as closely as possible to the control housing, with just

enough slack near the search coil to allow it to swivel

as far as it can in either direction. Too much loose cable

near the search coil may generate false signals.

4. Remove the tethered earphone plugs for rapid pressure

equalization as you dive and return to the surface.

SETTING UP

Figure 5.

BATTERY REPLACEMENT

VERY IMPORTANT

Follow these instructions carefully to avoid getting water in the

battery compartment.

1. Tuck in the wires. Do not pinch them in the seal when closing.

2. The battery door will capture the battery holder and self-center

it as you install the door.

3. Tighten the knobs SECURELY.

a. Use a coin.

b. Tighten by hand FIRMLY.

Use maximum MANUAL force.

c. Do Not use a tool.

d. Do Not use a screwdriver.

Torque Specication is 8 in-pounds.

4. If you have removed the gasket, see page

36 for installation instructions.

An improperly installed gasket = a water leak!

5. Submerge the detector in water for 1/2 hour.

a. Remove from water.

b. Dry off the detector

c. Remove the battery door

d. Verify that no water has entered.

This step is necessary to insure that you are applying

enough force to the screws.

6. If you cannot tighten the screws securely by

hand, then use a screwdriver.

a. Tighten the screw a maximum

additional rotation of 15° beyond the

hand-tightened position.

7. Lithium grease is installed between the

contact surfaces of the thumb-screw and

insert in the case.

a. Do not wipe off the grease.

b. With usage, the grease may wear off.

c.Without grease, the thumb-screw may seize up after

tightening. If this happens, reapply a small amount of

lithium grease between the contact surfaces.

15°

Caution: Hipmounting the CZ-21 control housing is not

recommended for underwater use. The search coil cable may

become entangled with a submerged object, making it difcult

for the diver to resurface quickly in case of emergency.

SETTING UP FOR HIPMOUNTING

For nearly-effortless treasure hunting, the control housing is

easily removed from the handle and attached to the belt clip

(included).

INSTRUCTION FOR REMOVAL OF CZ-21 FROM HANDLE

WARNING DO NOT DO THIS

Do not push on unit from the back (battery side.). Doing this will

most likely cause unit to release suddenly and y off, impacting

on the control knobs on the oor, and damaging the unit.

THIS TYPE OF DAMAGE WILL VOID YOUR WARRANTY

SETTING UP

Figure 6. You can hipmount your CZ-21 by sliding the control housing from

the handle and attaching it to your belt. This reduces the weight of the

stem, creating nearly effortless hunting.

The CZ-21 is powered by four, 9-volt transistor batteries located

in the rear section of the control housing. The batteries are sealed

off from the electronics so that accidental water leakage into the

battery compartment will not damage the circuitry. To replace

the batteries:

1. Remove the battery door by partially unscrewing

the two knurled thumb screws. The knurled knobs

are “captive screws” and are not to be completely

removed from the battery door.

2. Remove the battery pack from the Control Housing.

It’s not necessary to disconnect the battery lead

connector. Be very careful not to put any undue

strain on the battery leads.

3. Remove the batteries from the battery pack, and

install fresh alkaline batteries. You may also use

rechargeable Nicads, but expect about half the

battery life.

4. Insert the battery pack into the Control Housing. With

your nger, push the top of the battery pack (with

the leads) into the Control Housing rst, then let the

bottom follow.

5. Make sure the O-ring and both sealing surfaces

are clear and free of debris before reinstalling the

battery cover. THIS IS EXTREMELY IMPORTANT!.

See page 36 for gasket orientation.

6. Finger tighten the thumb screws, then carefully

tighten again 1/4 turn with a coin or screwdriver.

BATTERY REPLACEMENT

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