Fisher CZ-CZ-70 PRO Quicksilver Operating Manual

Deep search, body mount, target i.d. metal detector

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CZ-70 PRO Quicksilver
Deep Search, Body Mount, Target I.D. Metal Detector
Operating Manual
F I S H E R
R E S E A R C H
L A B O R A T O R Y

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Summary of Contents for Fisher CZ-CZ-70 PRO Quicksilver

  • Page 1 CZ-70 PRO Quicksilver Deep Search, Body Mount, Target I.D. Metal Detector Operating Manual F I S H E R R E S E A R C H L A B O R A T O R Y...
  • Page 2: Table Of Contents

    CONTENTS About Your Detector ............. pg. 1 Setting Up................pg. 5 Body Mounting ..............pg. 8 Turn-On-And-Go “Preset” Operation ........pg. 9 Control Panel ................. pg. 11 Turn-On Procedure ..............pg. 16 Ground Balancing..............pg. 17 Pushbutton ................pg. 18 Bobbing ..................
  • Page 3: About Your Detector

    ABOUT YOUR DETECTOR Your CZ-70 Pro is an extremely advanced and sophisticated instrument. It combines deep seeking, microprocessor, target- I.D. technology with user friendly controls and a very rugged and unique body-mount control housing. 1. Easy to Use: Just set the ground-balance knob on the red 5, push the "PRESET' touch pad and you're ready to start searching in a "coins only"...
  • Page 4 ABOUT YOUR DETECTOR 6. 4-Tone Target l.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 and silver rings and a new 4th tone for old coinsand relics. 7.
  • Page 5 ABOUT YOUR DETECTOR 12. 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 identification. 13. Faint-Target Audio Boost: The lower range of the volume control of the CZ-70 Pro is like any other that you've used.
  • Page 6 ABS lock nut. 20. Balanced and Comfortable: The universal arm rest detector stand along with Fisher's "S" handle design and pistol-grip mounted control housing give the CZ 70 Pro superior balance and maximum comfort.
  • Page 7: Setting Up

    SETTING UP Your Fisher CZ-70 Pro QuickSilver is built to last for years. 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-70 Pro requires little assembly.
  • Page 8 SETTING UP spring clip to snap into one of the holes in the center stem. The coil angle is adjusted by loosening the nylon wing nut on top of the search coil. NOTE: Remember, the longer the shaft, the more you'll have to bend your elbow to keep the coil off the ground and the sooner your arm will get tired.
  • Page 9 SETTING UP 5. Reconnect the coil cable to the control housing. Be careful not to cross thread it and make sure it's snug, but hand tighten only. 6. With the shaft length and coil angle properly adjusted, you should be able to move into your search position by leaning forward very slightly and raising angle so the coil rests flat on the ground about 6 to 12 inches in front of your arm.
  • Page 10: Body Mounting

    4. Reconnect the cable to the control housing. 5. The control housing can then be mounted on your belt or on the optional Fisher Chest Harness, which is especially useful for shallow water hunting.
  • Page 11: Turn-On-And-Go "Preset" Operation

    TURN-ON-AND-GO ‘PRESET’ OPERATION Your CZ-70 Pro Quicksilver is fairly simple to operate, especially when compared to other target-I. D. machines. Even so, we strongly recommend that you read this entire manual. You'll be able to tune your CZ-70 Pro to your specific needs and ground conditions.
  • Page 12 TURN-ON-AND-GO ‘PRESET’ OPERATION optimum for the ground you're searching, and that's why your sensitivity is set relatively low-to minimize false signals caused by ground mineralization. 7. Travel slowly, overlap your sweeps and keep the search coil moving. Remember, you're in a "motion"...
  • Page 13: Control Panel

    CONTROL PANEL Note that the touch pads are slightly raised so that you can actually feel them. When you press these custom touch pads you can feel and hear a definite "click (so you know the switch has been activated). The CZ-70 Pro control panel features a...
  • Page 14 CONTROL PANEL LCD when VOL pad has been pressed and volume is set to 6 using Arrow touch pads. targets continue to get louder. Exit the volume function by momentarily pressing and releasing the SEARCH/PINPOINT touch pad.* NORM/SALT: Press momentarily and release to select either the NORM or SALT mode.
  • Page 15 CONTROL PANEL When searching in the PRESET VOL = 6 mode, you can set the NORM/SALT - NORM GROUND BALANCE knob to AUTO/I.D. = I.D. the red 5 or you can adjust it in SENS = 4 accordance with the ground Notch Discrimination = balancing procedure.
  • Page 16 CONTROL PANEL the I.D. and SEARCH/PINPOINT modes. LEFT-RIGHT ARROWS: These Arrow touch pads are used in conjunction with the VOL, SENS and NOTCH functions. Adjustments are made by first pressing a function pad, and then pressing the appropriate Arrow pad, which moves the cursor left or right one space across the LCD.
  • Page 17 CONTROL PANEL 3. Autotune or Target I.D. made 4. BATTERY condition. Three markers indicate a full or near-full charge. Two markers indicate the batteries have some hours on them but are still OK. One or no markers mean that it's time to change batteries.
  • Page 18: Turn-On Procedure

    TURN ON PROCEDURE 1. (optional) Adjust your headset volume controls to minimum, and plug the headphone jack into the CZ-70 Pro control panel. Leave the headset around your neck for now. 2. When you first turn the power on, you will probably notice a momentary display on the LCD.
  • Page 19: Ground Balancing

    GROUND BALANCING Metal detectors like the CZ-70 Pro operate by generating an electromagnetic field from the search coil into the ground. When this field surrounds a metallic object, it becomes distorted and the distortion is recognized as a target by the CZ- 70 Pro electronic circuitry.
  • Page 20: Pushbutton

    GROUND BALANCING If you have difficulty ground balancing, try reducing your sensitivity level or moving to another spot just in case you are over a buried piece of metal. In some areas of high ground mineralization you may not be able to use the pushbutton method.
  • Page 21: Bobbing

    GROUND BALANCING you're probably over a piece of metal. Move away and try again. 2. If you get a sudden bell tone that is not preceded by an increasing audio response as you lower the coil, you're probably in some very highly mineralized soil or sand.
  • Page 22 GROUND BALANCING 2. Lower the search coil to an inch or two above the ground. Now, quickly raise the search coil. Note that as you lower the coil, the tone dies out and then gets louder as you raise it. Finally, the tone returns to normal when you stop it about 6 inches above the ground.
  • Page 23 GROUND BALANCING in small increments until there is little or no change in the threshold hum as you bob the search coil. 7. With a little practice, you should be able to ground balance quickly by "bobbing" the search coil up and down in a continuous movement as you adjust the GROUND BALANCE control with your thumb.
  • Page 24: Search Modes

    SEARCH MODES Your CZ-70 Pro has two search modes: Target I.D. and Autotune. Both search modes are "motion" modes, meaning the search coil must be moving to detect a target. Autotune Search Mode Press the AUTO/I.D. pad to place the LCD marker over AUTO. Now you're in a very sensitive, widescan, all-metal, motion search mode.
  • Page 25: Target-I.d

    SEARCH MODES are generally found in highly mineralized soil so this will be the search mode of choice for prospectors. NOTE: In the AUTOTUNE mode, you will hear a slight `threshold" hum at maximum sensitivity but not of settings of 8 and lower.
  • Page 26 SEARCH MODES pennies will also be correctly classified. Silver coins, copper coins, and the newer clad coins will I. D. on the highest category. 6. Note that an elongated ferrous object such as a nail will give you a double "beep" as you cross it from end to end and a single "beep"...
  • Page 27: Audio Response Chart

    SEARCH MODES 9. When you go over a large, shallow target, the CZ-70 Pro will respond with a distinctive bell tone. This is because metal detectors can only identify small targets. What usually happens is the detector circuits overload and identify a large target as "good"...
  • Page 28 SEARCH MODES 11. Continue to increase the number of your target categories by using the NOTCH pad in conjunction with the Arrow pads. You can reject (notch out) any combination of target categories. For example, if you're hunting for iron Civil War relics, you can reject every category except IRON.
  • Page 29 SEARCH MODES LCD in NOTCH mode set up for gold-ring hunting. If you're in an area that's loaded with round tabs, however, you could notch them out also. You'd lose rings that fall into that category, but you'd still get all the rings falling into the foil and nickel categories, which includes 75 percent...
  • Page 30: Searching

    SEARCHING Good search techniques are every bit as important as having a good detector. 1. Make sure your CZ-70 Pro is properly ground balanced and the proper mode is selected: SALT for wet ocean beaches and NORM for just about every other situation.
  • Page 31 SEARCHING 6. Keep the coil parallel to the ground and as close to the ground as practical. This is extremely important for maximum coverage and depth. If you’re searching on a lawn, you may set the coil right on the grass and lightly “scrub it.” Keep the search coil as close to the ground as possible for greater...
  • Page 32 SEARCHING you’ve been so that you don’t retrace your steps or miss any productive areas. 9. Keep the search coil moving at a comfortable rate. Remember: the CZ-70 Pro is a motion detector and responds only when the search coil (or target) is moving (except when in the no- motion Pinpoint mode).
  • Page 33: Pinpointing/Depth Reading

    PINPOINTING/DEPTH READING Pushbutton Pinpoint Mode Target location is quick and easy using the SEARCH/ PINPOINT touch pad. And when you pinpoint your target, your CZ-70 Pro will give you an approximate (usually within an inch or so) depth reading for coin-sized targets.
  • Page 34: Target Identification

    PINPOINTING/DEPTH READING quickly than in getting an accurate depth reading, don't worry about moving your coil at least "1 foot away" (as in step 1) and placing the coil "lightly on the ground" (as in steps i and 6). Just press the SEARCH/PINPOINT pad and zero in on the strongest response.
  • Page 35 TARGET IDENTIFICATION tabs or relics. Gold nuggets, depending on their size and shape, may fall into just about any category, the smaller nuggets falling on the lower half of the scale. So if you're not just looking for U.S. coins, you should test some sample targets to determine what level of discrimination you want to work at and what targets you want to dig.
  • Page 36: Target Recovery

    TARGET RECOVERY Once you have identified and pinpointed your target, your objective is to recover it quickly and neatly, leaving virtually no trace of your excavation. There are almost as many ways to do this as there are Treasure Hunters. Whatever works for you is good enough as long as you don't break any laws, damage vegetation, or leave uncovered holes.
  • Page 37: False Signals

    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.
  • Page 38 FALSE SIGNALS one-way signal or it disappears, move on. Also, if your pinpointing location is different than your I.D. location, your target is probably a piece of iron. Using the small 5-inch coil and/or reducing your sensitivity level will also reduce the number of false signals caused by trash.
  • Page 39 FALSE SIGNALS 6. Wet Sand: Your CZ-70 Pro should be able to handle most wet sand easily unless it's black (see Black Sand #5). Chances are, if you're having trouble in wet sand, you've forgotten to switch your NORM/ SALT touch pad to SALT and re-ground balance when you moved from dry to wet sand.
  • Page 40 FALSE SIGNALS 10. Other Targets that Aren't There: Good, lock-on, repeatable signals but nothing there. 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 direction.
  • Page 41: Operating Tips

    OPERATING TIPS 1. It's always a good idea to walk slowly and overlap your sweeps. But if you're searching a large expanse of new territory, you may want to walk a little faster and not overlap your sweeps as much until you start making a few good finds, Then, slow down, overlap your sweeps and cover every inch of ground.
  • Page 42 OPERATING TIPS categories. If you're in an area with very little trash, you may not want to notch out anything other than iron. On the other hand, if you're looking for coins in an extremely trashy area, you may even want to notch out zinc pennies and nickels and concentrate on the copper, clad and silver coins.
  • Page 43 OPERATING TIPS deeper and wider, cover it up and go on. You may be over a buried pipe or some other large deep target. 12. When in doubt, dig. If your CZ-70 Pro can't quite decide whether a target is good or bad, dig it up.
  • Page 44: Battery Replacement

    BATTERY REPLACEMENT Three battery markers showing on the LCD indicate fully charged, or nearly fully charged batteries. Two markers mean that the batteries have been used for several hours but are still well within operating range. One or no markers mean that it's time for new batteries.
  • Page 45: Maintenance

    MAINTENANCE Your CZ-70 Pro doesn't require a lot of care. It's built with high- quality materials and it's splashproof and dustproof. But there are a few things you should do to keep it in peak operating condition. 1. If you're not going to be using it for a while, take the batteries out.
  • Page 46: Specifications

    SPECIFICATIONS Operating Modes 1. Autotune ..... VLF-Motion. all-metal with threshold tone 2. Target I.D....VLF-Stow Motion. Silent-Search Discrimination 3. Pinpoint Depth Reading ......VLF. All-Metal. No Motion Frequency ........Dual. VLF Search 5 kHz and 15 kHz Manual Ground Adjust ............... Yes Search Coil Type ..........
  • Page 47 10.The length and terms of the warranty will vary outside the U.S. Check with your distributor for detarts. Fisher Research Laboratory does not warrant suitability to specific use. Fisher Research Laboratory shall in no event be liable for any direct. incidental, consequential or indirect damage.
  • Page 48 R E P U T A T I O N Fisher produced the first patented metal detector in 1931. For over 70 years, the Fisher logo has been a mark of excellence. L I F E T I M E W A R R A N T Y...

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