CZ-20 Quicksilver Deep Search, Body Mount, Target I.D.
CONTENTS About Your CZ-20 ....................................................................pg. 1 Condensed Operating Instructions .......................................pg. 3 Assembly ..................................................................................pg. 5 Setting Up..................................................................................pg. 6 For Land or Shallow Water .....................................................pg. 6 For Diving ...........................................
ABOUT YOUR DETECTOR Your CZ-20 QuickSilver is truly an all-purpose metal detector engineered for land, beach, salt and fresh-water treasure hunters. Here are some important built-in features: 1. Leakproof: Submersible to 250 feet, headphones and all. 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.
ABOUT YOUR DETECTOR conditions. 10. Separately Sealed Battery Compartment: Protects the electronics from accidental flooding. 11. Spider Coils: Your choice of the all-purpose 8inch or deep-seeking 10 1/2-inch Spider coils. Light, tough and with open centers for accurate pinpointing. The hot, little 5-inch coil is great for extremely trashy areas, tight spots or highly mineralized ground. 12.
CONDENSED OPERATING INSTRUCTIONS Factory Pre-Set ‘Turn-On-and-Go’ Marks Your CZ-20 QuickSilver is fairly simple to operate, especially when compared to other target-I.D. machines. Even so, we strongly recommend that your read this entire manual. You’ll be able to tune your CZ-20 to your specific needs and conditions. And if you have a good understanding of how to do it and why, you’ll find more.
CONDENSED OPERATING INSTRUCTIONS GROUND setting of “5” is probably not the optimum setting for the ground you’re searching, and that’s why the sensitivity level is lowto reduce false signals caused by ground mineralization. 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.
ASSEMBLY 1. Remove the headphone, handle and searchcoil assemblies from the carrying case. Be careful not to damage the foam-rubber inserts or 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.
ASSEMBLY However, it’s a sophisticated electronic instrument containing state-of-the-art components. Handle it carefully, care for it regularly, and it will give you years of dependable service. The CZ-20 requires little assembly. Unpack it carefully and save the carton; it comes in handy if you ever have to return the instrument for service.
SETTING UP 1. Adjust the stem length and coil angle so the search coil rests flat 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. 3.
SETTING UP 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.
SETTING UP “Hipmounting” the CZ-20 in this manner takes about half the weight off the handle and allows the land or shallow-water Treasure Hunter to search much longer without arm fatigue. 1. Grasp the handle grip firmly with one hand and the control housing with the other. 2. Slide the control housing off the mounting bracket by pulling it toward you. 3. Slide the belt clip into grooves on the bottom of the control housing. This is a snug fit, and you’ll have to bend the clip slightly. 4.
CONTROL PANEL 1. VOLUME/OFF: Power on-off and volume control. Volume is gradually increased from 1-5 settings. From 5-10, loud-target response is held constant while faint targets continue to get louder. 2. DISC: In the 0-6 positions, the CZ-20 is in the target mode, which is a silent, no-threshold, motiondiscrimination mode of operation with the ability to identify and then ignore (“reject”) or accept many kinds of small metal targets. In the AUTOTUNE position, the CZ-20 is in an all-metal mode.
CONTROL PANEL 6. LIGHT EMITTING DIODES (LED’s): Used to indicate target signal strength. When the SENSITIVITY control is in the “BATT TEST” position and both LED’s are fully lit up, the batteries are fully charged. When both LED’s are out, it’s time to replace the batteries. TURN ON PROCEDURE 1. Set your controls as follows: GROUND = “10” DISC = “0” for normal use in target I.D. mode. (Set DISC to “Autotune” for deep search, all-metal AUTOTUNE mode. SENS = “10” VOLUME = OFF 2.
GROUND BALANCING PUSHBUTTON This will probably be your method of choice in all but the most difficult of ground conditions. It’s fast, easy and accurate. You can use this method in either the Autotune or Target-I.D. mode. 1. With your controls set as in the “Turn-On” procedure (GROUND control at “10”), hold your search coil parallel to and 6 to12 inches off the ground. Press the PINPOINT button and hold it until you’ve completed step 2. Make sure you’re at least 3 feet away from any metal objects. 2.
GROUND BALANCING BOBBING 1. AUTOTUNE and the SENSITIVITY control is set so you can just barely hear a threshold hum. Hold the search coil parallel to and 6 to 12 inches over the ground and at least 3 feet away from any metal objects. Do not use the PINPOINT button during any part of this procedure. 2. Lower the coil to an inch or two above the ground and then quickly raise it.
GROUND BALANCING have gone past the correct ground-balance setting. Increase the ground-balance level (rotating the control counterclockwise) in small increments until there is little or no change in the threshold level. 7. With a little practice, you should be able to ground balance quickly by “bobbing” the coil up and down in a continuous movement as you adjust the GROUND control with your thumb. NOTES: 1.
SEARCH MODES Your CZ-20 has two search modes: Target I.D. and Autotune. Both search modes are “motion” modes, meaning the search coil must be in motion to detect a target. AUTO TUNE Set the DISC control to AUTOTUNE, and you’re in a very sensitive, wide-scan, all-metal, motion search mode. Since this mode responds to all metal targets and does not have the ability to identify or reject objects, this will probably not be your normal search mode.
SEARCH MODES on the discrimination level, reject or ignore most of them. To better understand just how your CZ-20 responds to different targets, try the following: 1. Scatter some sample targets such as coins, rings, pull tabs, nails and foil on the ground at least 18 inches apart. Include some large targets as well: jar lids, soda cans, etc. 2. Set the DISC control at “0,” SENS at “5.” Adjust the VOLUME control for a comfortable level when you are over a large target. 3.
SEARCH MODES to overload than the 8- or 10 1/2-inch coils. 8. Most silver rings will give a high tone. Most gold rings will fall into the pull tab/foil mid-tone category. This is due to the unavoidable fact that most gold rings are conductively similar to aluminum foil and pull tabs. Some are more closely identical to the U.S. 5-cent piece; however, the CZ-20 does have the unique ability to separate those signals from the aluminum trash signals. 9. Now increase the DISC control to “1.
SEARCH MODES targets and at different levels of discrimination. Note that as you progressively increase the discrimination level you eliminate more and more targets. 13. Now switch the DISC control to the AUTOTUNE position and note the completely different kind of response. No tone, just a smoother, solid response over every target. NOTE: Be aware that due to the virtually infinite variety of sizes, shapes and alloys of many “good” targets (relics, jewelry, foreign coins, etc.
SEARCHING ON LAND OR SHALLOW WATER search coil in a tight semicircle as shown. When the stem length is properly adjusted, the CZ20 is balanced for sweeping in a tight pattern around the front of the operator: wide to the right for right handers, wide to the left for left handers. Be sure to overlap your sweeps. 6. Keep the coil parallel to the ground and as close to the ground as practical.This is extremely important for maximum coverage and depth.
SEARCHING ON LAND OR SHALLOW WATER 1 2 3 4 The effects of sweep speed, ground mineralization and search mode. 1. Minimum depth a. Very slow or very fast sweep speed b. Highly mineralized soil c. Target I.D. search mode 2. Good depth a. Moderate sweep speed b. Moderately mineralized soil c. Target I.D. search mode 3. Maximum depth a. Moderate sweep speed b. Non-mineralized soil c. Autotune search mode 4.
SEARCHING UNDERWATER The CZ-20 is waterproof to 250 feet, and it operates the same underwater as on land. However, some differences in search technique should be noted. 1. Tune your CZ-20 underwater on the bottom as instructed on p. 9. Many divers prefer to use the Autotune mode, in which case you may want to run your threshold tone slightly higher than you would on land. If you’re wearing a hood, you’ll probably have to turn the volume control to maximum. 2.
PINPOINTING Target location is quick and easy using the pushbutton Pinpoint mode. You do not have to keep the coil moving to get a response in this mode. 1. Once the presence of a target is indicated by the “beep-beep” of your CZ-20, simply move the coil away from the target area, and with the coil lightly on the ground or very close to it, press and hold the PINPOINT button. (It doesn’t matter which mode you’re searching in, Autotune or Target I.D.) Edge of signal with pinpoint button pushed once.
PINPOINTING Target I.D. Mode and Autotune Mode Pinpointing in either of the search modes is more difficult, but with practice you should be able to get the hang of it. (Many CZ-20 operators don’t even bother with the Pinpoint mode.) Simply use the same basic procedure as you would using the Pinpoint mode, moving the coil side to side and front to back over the target area, stopping over the strongest audio response.
TARGET IDENTIFICATION the DISC setting you’ve chosen, and your CZ-20 is rejecting it. 4. Once you’ve pinpointed your target and you’re getting a good, consistent signal, you’ve identified or at least classified your target. A low tone means your target is probably ferrous. A mid tone indicates a pull tab or foil, and the high tone indicates a U.S. coin. 5. The DISC control provides increments of rejection and identification within the mid- and high-tone target classifications. Take a look at the target I.
TARGET IDENTIFICATION sources of error. Remember, the CZ-20 is designed to I.D. small, coin-sized targets only, and even some of these may be deep enough, bent, damaged, or corroded enough to give a false signal. 9. You should also realize that there are many good targets which are not classified by the CZ-20. As mentioned earlier, gold rings, for example, may fall into any category except iron. Many foreign coins, especially the new ones, may I.D. as foil or pull tab.
RECOVERY TOOLS 1. Sand scoops designed especially for beachcombers and shallow- water treasure hunters are available at metal detector outlets. 2. Divers use a variety of recovery tools, depending on the condition of the sea bed or lake bottom. A sturdy dive knife will suffice in packed mud or small rocks. Most divers prefer to use their hands in loose sand. Professional treasure hunters often use an air hose fed by a surface compressor to blow away loose sand, gravel or mud. 3.
FALSE SIGNALS A “false signal” occurs when a target is incorrectly identified. For example , a small, broken-off piece of pull tab may be identified as a nickel. Or a small, deep coin, especially in mineralized soil, may read “IRON.” The more sensitive the metal detector, the harder it is not to have false signals. Your CZ-20 is an extremely sensitive machine, so you’re bound to encounter them. Here are some of the most frequent sources of false signals and what to do about them: 1.
FALSE SIGNALS sensitivity level, taking shorter, slower sweeps, or increasing the discrimination level may reduce the number of false signals caused by trash. 2. Deep Targets: Deep targets, just barely within the range of the CZ-20, may be misidentified. For example, a deep coin may I.D. as iron, or a deep piece of iron may I.D. as a coin. There’s not much you can do to avoid this other than to use your pinpoint mode to ensure that you are exactly centered over the target.
FALSE SIGNALS number of false signals caused by salt water by lowering your sensitivity and making sure you are ground balanced properly. 7. Hot Rocks: Some rocks, by virtue of their high mineral content, will be seen by metal detectors as a metal target. In the Autotune mode, the CZ-20 will respond to most hot rocks. Prospectors (who will most likely be using the Autotune mode in an area where hot rocks abound), however, will learn to distinguish between many hot-rock and nugget sounds. In the target-I.D.
FALSE SIGNALS a) Shallow coins (at or near the surface) or coins on edge will give a double beep: one on either side of the coin, just like a nail. Like the nail, the coin on edge will give a single beep directly over the target if you sweep at right angles to your original position. b) A coin lying in the ground at an angle (as shown) may give a single target response but may pinpoint several inches away from its true location. Check around the inside edges of the hole.
OPERATING TIPS 3. Recheck your ground balance occasionally. 4. Here’s a quick and easy way to tell the difference between a small, shallow piece of foil and a gold ring (or other possibly good target) without digging: If you get a good solid “FOIL” I.D., set the search coil down close to the target and then whip it rapidly across the target just once with what can best be described as a flick of the wrist. lf the target disappears, it’s probably a small, shallow piece of foil.
OPERATING TIPS over the target area, or if it beeps in only one sweep direction, it’s probably a piece of trash something below your discrimination setting. 8. If you’re in a relatively non-trashy area, try searching in the Autotune mode and then identifying your targets by switching to DISC = “0.” You’ll find more and deeper targets this way. And you’ll eliminate almost all false signals. 9. If you’re having any difficulty pinpointing or identifying a target in the I.D. mode, don’t waste any more time.
OPERATING TIPS you’re on the bottom before putting your headset on, and take it off before surfacing. 17. Divers should also keep the search coil at least 2 feet away from their bodies. Metal gear (weights, gauges, tanks, etc.) will be detected by the CZ-20 if held too close. 18. Practice. Practice over known targets. Practice ground balancing. Practice pinpointing. Reread the appropriate part of this manual if you’re having problems.
BATTERY REPLACEMENT 1. Remove the battery door by partially unscrewing the two knurled thumb screws with a coin or screwdriver. (The knurled knobs are “captive screws” and do not have 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.
MAINTENANCE Your CZ-20 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. 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. 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.
TREASURE HUNTER’S CODE OF ETHICS LETS 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 get permission to hunt on private property. ALWAYS leave a site cleaner than you found it. Take at least some trash with you or, if you can, take it all. ALWAYS fill in your holes neatly whether you’re in a city park or remote wildernessness.
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 office. 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 office of the Army Corps of Engineers. Each area has a district office.
SPECIFICATIONS Length Extended ............................................................................. 50" Collapsed ......................................................................................... 30" 8" Coil .............................................................................................. 10.5" Coil 5" ............................................................................................... Coil Weight Complete (with headset) ....5 lb., 11 oz. 6 lb., 1 oz. 5.4 lb.
SPECIFICATIONS Type ............................................................................... (4) 9V Alkaline Life Alkaline ........................................................................... 35-55 hrs. Nicads .................................................................................... 10-20 hrs. Operating Temperature ................................................... 32° - 110° F Faint Target Audio Boost ...............................................................
QUALITY Fisher detectors are renowned for their quality. Each detector is hand crafted in the USA with pride PERFORMANCE Treasure Hunters worldwide rely on Fisher. Our detectors are durable, dependable, and search deeper.. REPUTATION Fisher produced the first patented metal detector in 1931. For over 70 years, the Fisher logo has been a mark of excellence.
