CZ-7a 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
CONTENTS
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.............................................................About Your Detector |
pg. 1 |
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Setting Up................................................................................ |
pg. 5 |
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Body Mounting ...................................................................... |
pg. 8 |
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Turn-On-And-Go “Preset” Operation .................................. |
pg. 9 |
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Control Panel ......................................................................... |
pg. 11 |
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Turn-On Procedure ................................................................ |
pg. 16 |
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Ground Balancing................................................................. |
pg. 17 |
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Pushbutton .............................................................................. |
pg. 18 |
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Bobbing .................................................................................. |
pg. 19 |
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Search Modes........................................................................ |
pg. 22 |
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Autotune ................................................................................. |
pg. 22 |
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Target-I.D. ............................................................................... |
pg. 23 |
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Audio Response Chart .......................................................... |
pg. 25 |
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Searching ............................................................................... |
pg. 28 |
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Pinpointing/Depth Reading ................................................. |
pg. 31 |
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Target Identification .............................................................. |
pg. 32 |
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Target Recovery .................................................................... |
pg. 34 |
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Recovery Tools ...................................................................... |
pg. 34 |
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False Signals ........................................................................... |
pg. 35 |
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Operating Tips ........................................................................ |
pg. 39 |
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Battery Replacement ............................................................ |
pg. 42 |
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Maintenance ......................................................................... |
pg. 43 |
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Specifications ........................................................................ |
pg. 44 |
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ABOUT YOUR DETECTOR
Your CZ-7a 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" mode. For maximum performance, you can easily adjust the CZ-7a Pro for your own specific situation. Ground balancing and fine tuning with the touch pads is quick and simple.
2.Tactile Feedback Touch-Pad Controls: Raised touch pads give a positive click when pressed. Unlike many touch pads, you know when you're touching them-without looking; and you know when you've entered a command.
3.Liquid Crystal Display with Back-Light: A large liquid-crystal display gives you quick and accurate information about the target, operating mode and battery condition. Use this function sparingly as it will significantly reduce battery life.
4.Notch Discrimination: You can selectively ignore or accept any combination of seven small-target classifications: iron, round pull tabs, rectangular pull tabs, foil, zinc pennies, nickels and a category including copper pennies and other U.S. clad and silver coins.
5.Visual Target ID.: A microprocessor-controlled display registers one of seven small-target categories. When the powerful, dual-frequency CZ-7a Pro classification system makes an identification, a marker appears on the LCD under the appropriate target-category icon. If identification is difficult due to irregular size, conductivity or depth, the CZ-7a Pro will alert you by jumping back and forth between the two most likely categories.
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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. But the CZ-7a Pro separates the nickels from the trash and even separates the tabs from the foil so the ring hunter can determine just how much trash he's willing to put up with. For example, in an area heavily infested with nails and foil, you can set the CZ-7a Pro to ignore iron and foil and still dig nickels, other coins and all gold rings falling into the nickel and pull-tab categories.
8.Silent-Search, Slow-Motion Target LD. Mode:
No threshold tone; no chatter. The audio and visual target ID. circuits ignore everything you've "notched" out. For example, if you've notched out iron targets, you'll never hear the low "iron" tone, and you'll never see a marker under the iron icon.
9.All-Metal Autotune Mode: Hot, smooth running, wide-scan search mode for all-metal treasure hunting and prospecting.
10.Pushbutton VCO Pinpointing and Depth Reading: Push the PINPOINT touch pad and the CZ-7a Pro operating mode changes to no motion. The search coil doesn't have to be moving to locate a target. The signal tone increases in pitch and volume as the center of the coil approaches the target. Target depth is displayed in inches.
11.Touch-Pad Ground Balancing: Just press the pinpoint touch pad 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.
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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.
14.Big-Target Alert: Ordinary detector circuits overload on large, shallow targets, identifying them as good targets. But not the CZ-7a Pro. A distinctive belt tone immediately warns you that the target signal is too strong to identify.
15.Wet Sand Operation: Just press the NORM/ SALT touch pad, reset the ground control and you can search wet salt-sand like nobody's business. In fact, you can submerge the coil for shallow saltwater beachcombing.
16.Splashproof, Rainproof, Dustproof: The control housing is sealed and the battery compartments have their own gaskets. The search coil is submersible. The cable connector and headphone jack (when the phone plug is inserted) are splashproof. The CZ-7a Pro is not submersible, but rain and dust are no problem, and the speaker is splashproof.
17.Drop-In Batteries: No wires, no clip, no hassle. Just drop in two 9volt transistor batteries.
18.Constant Battery Monitor: You always know the condition of your CZ-7a Pro batteries. Three bars on the Liquid Crystal Display indicate fully charged batteries. Two bars means they're about half gone, and one bar means it's time to replace them.
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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.Spider Coils: Your choice of an all-purpose, 8- inch Spider coil or a deep-seeking 10 1/2-inch Spider coil. They're light, tough and have open centers for accurate pinpointing. The hot, little 5- inch coil is great for extremely trashy areas, tight spots or highly mineralized ground.
22.Three-Piece Breakdown: The CZ-7a Pro breaks down to fit into an optional carrying case not much bigger than a briefcase and small enough for most airline carry-on luggage.
23.Last-Setting Turn-On Memory: When you turn your CZ-7a Pro on, it automatically sets the Sensitivity, Volume, Notch and Mode exactly as they were when you turned it off (even if the batteries have been removed!). Note that no battery drain is required to retain your last settings in memory.
24.Body Mount or Handle Mount: Just slide the control housing off the handle grip, snap on the belt loop and put it on your belt. What's left is so light it will feel like part of your arm.
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 finds to tell us about. In the meantime. . .
Happy Hunting,
FISHER RESEARCH LABORATORY
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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.Adjust the stem length and coil angle so that the search coil rests flat on the ground about 6 to
12inches in front of and slightly to the right of your right foot (to the left of your left foot for left handers). Your arm should be straight and relaxed, the grip held loosely (see drawing on next page). The stem length is adjusted by loosening the lower lock nut and allowing the
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Liquid |
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8-inch Spider |
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search coil |
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Control |
crystal |
Center |
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display |
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housing |
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stem section |
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Touch pads |
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Search |
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coil cable |
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Foam |
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hand grip |
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Padded |
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Arm rest |
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Nylon wing nut |
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Upper |
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Lower |
(with |
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lock nut |
replaceable |
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lock nut |
Duro-Neoprene |
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Adjustable, |
bushings) |
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fiberglass |
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filled, |
nylon |
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lower stem |
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Upper stem
5
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. With the stem length properly adjusted, wrap the search coil cable snugly around the lower stem and the center section. Leave just enough slack near the coil to allow it to be tilted completely backward and forward.
NOTE: A loose cable near the search coil may cause false signals, but don't wrap it so tightly that it pulls against the housing or the coil.
Adjust the stem length and coil angle so the coil rests flat on the ground about 6 to 12 inches in front of your foot. Move into your "search" position by leaning slightly and raising the coil about 2 inches off the ground. This should put the coil about 12 to 18 inches in front of your lead foot.
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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.
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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.Attach the belt loop to the control housing by slipping it over the brass posts on the bottom of the control housing and pulling it toward the control panel to lock it in place.
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.
It is especially important that the cable connector be installed tightly to prevent false signals during body-mount use. Tight, but never tightened with anything but your hands.
For belt mounting, left handers should wear the housing on their right hip and right handers should wear it on their left hip.
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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.
But if you just can't wait any longer, and you're an experienced detector user, here's some quick instructions to get you going:
1.If using optional headphones: Plug your headphones into the jack on the control panel and put them around your neck.
2.Turn the power on by rotating the the GROUND BALANCE knob clockwise to the red 5.
3.Press and release the PRESET touch pad.
4.Your CZ-7a Pro is now in a "coins-only" mode, preset at the factory to accept U.S. coins and reject small ferrous and aluminum trash.
5.You are ready to begin your search at this point, but first, if using optional headphones, put them on and pass the coil over a large target. If the response is too loud or not loud enough, adjust the volume by pressing and releasing the VOL touch pad and pressing the left/right arrows touch pads. Press and release the SEARCH/ PINPOINT pad to exit the Volume function and activate the Search mode.
6.As you begin your search, keep in mind that the GROUND BALANCE setting of 5 may not be
To use the turn-on-and-go feature of your CZ-7a Pro, turn the GROUND BALANCE knob to the red 5 preset mark and touch and hold the PRESET touch pad.
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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.When you get a good, repeatable signal, pinpoint the target by placing the coil on the ground away from the target, pressing and holding the SEARCH/ PINPOINT pad and then bringing the coil back over the target.
9.Once you've pinpointed the target, note the approximate depth reading on the LCD, then identify the target by releasing the pinpoint button and moving the coil side to side in short strokes over the target. A cursor will lock under the appropriate target classification.
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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.
GROUND BALANCE, ON/OFF: This knob turns the unit on and off and compensates for ground mineralization when used in conjunction with the SEARCH/PINPOINT touch pad. (See p. 17 for more on Ground Balancing). 5 is the preset (red) position.
When the power is turned on, the volume, sensitivity, notch and made functions are automatically set at the same levels they were when last turned off (this is true even if the batteries have been replaced.)
LIGHT: When pressed momentarily and released, the LCD is backlit for night searching. Press and release to turn off. *Use this function sparingly as it will significantly reduce battery life.
VOL: Press and hold until the numbers 0-10, a row of cursors and the abbreviated word "VOL" appear. Adjust the volume by using the left-right arrow touch
pads. Volume is gradually increased from settings 0 to 4. From 6 to 10, the faint-target audio boost function becomes active; loud target response remains constant while faint, weak
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CONTROL PANEL
LCD when VOL |
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pad has been |
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pressed and |
0 |
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6 |
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volume is set to 6 |
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VOL |
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. 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.: Press momentarily and release to change from the Autotune mode to the Target I.D. mode or vice versa (this should take less than a second). A cursor will let you know which mode you are in. (See p. 17 for more on the Autotune mode.) SENS: Press and hold until the numbers 0-10, a row of cursors and "SENS" appear. Adjust sensitivity as you did the volume above. Exit the sensitivity function by momentarily pressing and releasing the SEARCH/PINPOINT pad.*
LCD when SENS pad has been pushed and sensitivity is set to 8 using the Arrow touch pads.
0 2 4 6 8 10
SENS
PRESET: When this pad is pressed and held momentarily, the CZ-7a Pro defaults to the factory preset control settings:
Factory preset control settings on LCD when PRESET pad has been pushed.
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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.
CAUTION: If you press the PRESET pad by mistake, there is no indication on the LCD to alert you to the fact that you may have changed your volume, modes, sensitivity and notch settings.
NOTCH: Press and hold the NOTCH pad until you see a cursor appear below the row of target icons. Accept or reject target categories by moving the cursor back and forth beneath the target icons
with the left-right arrow touch pads and pressing NOTCH when the cursor is below the selected target. A visible marker means the target will be accepted. When NOTCH is pressed and the cursor is below a marker, the marker will disappear and the target will be rejected. If the NOTCH pad is pressed below a target with no marker, the marker will appear and the target will be accepted. Exit the NOTCH function by pressing and releasing the SEARCH/PINPOINT pad. To check your notch settings over actual targets, make sure you're in
LCD in NOTCH mode rejecting iron, pull tabs and foil and accepting coins. Notice the cursor under the Zinc penny notch marker.
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