CZ-7a PRO Quicksilver Deep Search, Body Mount, Target I.D.
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 .......................................
ABOUT YOUR DETECTOR Your CZ-7a Pro is an extremely advanced and sophisticated instrument. It combines deep seeking, microprocessor, targetI.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" mode. For maximum performance, you can easily adjust the CZ-7a Pro for your own specific situation.
ABOUT YOUR DETECTOR 6. 3-Tone Target l.D.: A low tone for iron; a midtone for pull tabs, foil and most gold rings; and a high tone for U.S. coins, silver rings and some gold rings. 7. Target Separation: It's a sad-but-true fact that most gold rings, pull tabs, foil and nickels fall into the same conductivity range, meaning that a detector user has to dig a lot of trash to find rings and nickels.
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-7a Pro is like any other that you've used. But as you increase the volume above mid range, strong target sounds remain at a fixed volume while faint, deep-target sounds continue to get louder.
ABOUT YOUR DETECTOR 19. Adjustable, Double-Locking Lower Stem: Fiber glass reinforced nylon stem with a steel spring clip to keep it in perfect alignment and a positive grip injection-molded 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 7a Pro superior balance and maximum comfort. 21.
SETTING UP Your Fisher CZ-7a 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-7a Pro requires little assembly. 1. Unpack your CZ-7a Pro carefully and save the carton: it may come in handy if you ever have to return the instrument for service. 2. Slip the lower stem into the upper stem. 3.
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. The CZ-7a Pro is balanced for comfortable searching in a tight semicircle around the front of the operator. 4.
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. 7. (when using optional headphones) Plug the headphones into the HEADPHONES jack on the control panel.
BODY MOUNTING 1. Disconnect the cable from the control housing and unwind all but the last 12 inches or so from the stem. Secure the lower end of the cable with a Velcro strap at least 12 inches up from the coil. 2. Remove the control housing from the pistol grip by holding the grip with one hand and sliding the housing toward you wilth the other hand. 3.
TURN-ON-AND-GO ‘PRESET’ OPERATION Your CZ-7a 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-7a Pro to your specific needs and ground conditions. And if you have a good understanding of how to ground balance and why, you'll find more.
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" search mode, and the coil must be moving at least slightly to detect a target. 8.
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-7a Pro control panel features a manual, analog knob for ground balance and 10 custom, microprocessor controlled touch pads for all other functions.
CONTROL PANEL LCD when VOL pad has been pressed and volume is set to 6 using Arrow touch pads. 0 2 4 6 8 10 VOL 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. A cursor will remain above the appropriate mode name (NORMAL or SALT). Use the SALT mode when beach hunting on wet sand. AUTO 5 AUTO/I.D.
CONTROL PANEL When searching in the PRESET mode, you can set the GROUND BALANCE knob to the red 5 or you can adjust it in accordance with the ground balancing procedure. VOL = 6 NORM/SALT - NORM AUTO/I.D. = I.D. SENS = 4 Notch Discrimination = accepts - coins only * You can check your Volume and Sensitivity levels by passing the search coil over targets while in either the VOLUME or SENSITIVITY modes. Be sure to press and release the SEARCH pad, however, when you are ready to begin your actual search.
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. When in the Notch function, the cursor is positioned below the appropriate icon to accept or reject that category of target. Use the Arrow pads to also adjust the volume and sensitivity.
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. LCD in PINPOINT mode when SEARCH/ PINPOINT pad is pressed and held. According to the LCD, the target is approximately 8 inches deep.
TURN ON PROCEDURE 1. (optional) Adjust your headset volume controls to minimum, and plug the headphone jack into the CZ-7a 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. This is normal for the CZ-7a Pro. Set your controls as follows: GROUND BALANCE = 10 AUTO/I.D. = I.D. for normal use in target I.D. mode.
GROUND BALANCING Metal detectors like the CZ-7a 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 CZ7a Pro electronic circuitry. Ground mineralization can also distort a search coil's electromagnetic field, and a detector may respond to ground minerals just as it would to a real target.
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. IMPORTANT NOTE: If you body mount your CZ-7a Pro, you'll find that the "Bobbing" method is the easier of the following two ground balancing methods.
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. In this case, it's best to use the "Bobbing" method. paying particular attention to the notes on p. 17. 3.
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. Conversely, if you set the GROUND control to 1, the threshold hum gets louder as you lower the coil and dies out when you raise it. 3.
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. The "bobbing" method takes a little more practice, but you may find it slightly more accurate. You may hear and see fewer false signals if you're in highly mineralized ground.
SEARCH MODES Your CZ-7a 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. Since this mode responds to all metal targets and does not have the ability to identify or reject targets, this will probably not be your normal search mode.
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. Target I.D. Search Mode When the AUTO/I.D. control is set to I.D., the CZ-7a Pro has the ability to identify many types of small targets, and depending on the NOTCH discrimination settings, reject or ignore all of them, most of them, or any combination of them.
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" if you cross its center. 7. Most silver rings will I.D. at the highest end of the scale. If you have enough gold rings you will note that most of them fall in the pull tab, foil and nickel categories.
SEARCH MODES 9. When you go over a large, shallow target, the CZ-7a 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" (silver, coin, etc.). Your CZ-7a Pro, however, will alert you to a target that's big and shallow and cannot be accurately identified. (Big deep targets, however, will usually be classified as a coin.
SEARCH MODES 11. You may also note that some rectangular tabs I.D. as round tabs and vice versa. Because of the wide variety of sizes, shapes and conductivity of the many pull tabs manufactured over the years, some overlap of identification occurs. Small pieces of tabs or aluminum are often misidentified; the tail of a round tab, for example, may I.D. as a nickel. However, most tabs and most of the targets on the CZ-7a Pro LCD will be identified accurately. 12.
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 fail into that category, but you'd still get all the rings falling into the rectangular tab, foil and nickel categories, which includes 75 percent of gold-ring I.D.s. 14.
SEARCHING Good search techniques are every bit as important as having a good detector. 1. Make sure your CZ-7a Pro is properly ground balanced and the proper mode is selected: SALT for wet ocean beaches and NORM for just about every other situation. 2. If you're going to use the I.D. mode, decide which targets you want and don't want, and set up your Notch function accordingly. 3. Remember, a volume setting above 4 will amplify the response of faint, deep targets so that they sound like shallow targets.
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 penetration, and make sure the search coil remains parallel to the ground as you search. 7. Overlap your sweeps by at least 50 percent.
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-7a Pro is a motion detector and responds only when the search coil (or target) is moving (except when in the nomotion Pinpoint mode). 10. Take your time. If you walk too fast you can overlap your sweeps and you’ll miss a lot of ground. If you swing your coil too fast, you could lose some sensitivity to deep and/or small targets. 11.
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-7a Pro will give you an approximate (usually within an inch or so) depth reading for coin-sized targets. It doesn't matter which mode you're in (ID. or Autotune), and you don't have to keep the search coil in motion to get a response as long as the SEARCH/ PINPOINT pad is pressed. 1.
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. Also, remember that you can pinpoint targets of any size but you can only get accurate depth readings for coin-sized targets.
TARGET IDENTIFICATION tab. 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. 4) Your CZ-7a Pro will correctly identify most small targets most of the time, but it can be foooed.
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. Generally speaking, beachcombers do little if any damage to the environment while recovering targets.
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-7a Pro is an extremely sensitive machine, so you're bound to encounter false signals. Here are some of the most-frequent sources of false signals and what to do about them: 1.
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. 2. Deep Targets: Deep targets. just barely within the range of the CZ-7a Pro, 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.
FALSE SIGNALS 6. Wet Sand: Your CZ-7a 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. If that's not the problem, lower your sensitivity. 7. Hot Rocks: Some rocks, by virtue of their higher mineral content, will be seen by metal detectors as a metal target.
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.
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. 2. In trashy areas, to reduce the "masking" effects of trash on nearby good targets, use a shorter and slower sweep pattern.
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. If you're looking for relics, artifacts or small ancient coins, you'll have to keep your notches to a minimum.
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-7a Pro can't quite decide whether a target is good or bad, dig it up. 13. Good things often come in twos. Or ever? threes. Once you've recovered a good target, always recheck the hole for a second signal and carefully search the immediate area by walking slowly around the hole two or three times, overlapping your sweeps in an ever-widening circle.
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. Two 9-volt transistor batteries are located in separate compartments on the underside of the control housing. LOW OK 1.
MAINTENANCE Your CZ-7a Pro doesn't require a lot of care. It's built with highquality 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. Acid damage caused by leaking batteries can be severe. 2. Avoid extreme temperatures. Don't leave it inside a closed car that's sitting in the sun. Or even worse, the trunk of a car. 3.
SPECIFICATIONS Operating Modes 1. Autotune ..................... VLF-Motion. all-metal with threshold tone 6 2. Target I.D. ............. VLF-Stow Motion. Silent-Search Discrimination 6 3. Pinpoint Depth Reading ......................... VLF. All-Metal. No Motion Frequency .................................. Dual. VLF Search 4 5 kHz and 15 kHz Manual Ground Adjust ....................................................................... Yes Search Coil Type .............................................
SPECIFICATIONS Audio Output Speaker .......................................................................................... Built-in Stereo Headphones ................................................................(optional) Waterproof Headphones ......................................................(optional) Target I.D. LCD ....................................................................... Lock-On, 7 categories Tone ................................................................................
QUALITY Fisher detectors are renowned for their quality. Each instrument is hand crafted in the USA with pride PERFORMANCE 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. LIFETIME WARRANTY Fisher believes in the products we produce and backs this belief with a Limited Lifetime Warranty, Warranty may vary outside the United States.
