Search Modes; Auto Tune - Fisher M-Scope CZ-20 QuickSilver Operating Manual

TARGET IDENTIFICATION
much you might find in an area that would
otherwise be unsearchable at high sensitivity levels.
12. Set your discrimination at an appropriate level. If
there's very little trash in the area, set it low, say at
iron discrimination, and dig every good signal. If
there is a lot of trash present and you're mainly
interested in coins, set the discrimination level high
you may even want to sacrifice nickels and zinc
pennies in extremely trashy areas. If you're looking
for gold rings, relics, artifacts, or small ancient coins,
you'll have to set your discrimination level low. The
best way to find out how low is to bury some sample
targets or just dig everything for awhile until you
get a feel for which target classifications will be
the most productive.
13. Look for repeatable signals and don't waste time
on disappearing or one-way signals. If you hear a
good beep but can't repeat it when you go back
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.
14. 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. If you're
having any difficulty pinpointing or identifying a
target in the I.D. mode, don't waste any more time.
Push the pinpoint button for quick pinpointing, then
release it for accurate I.D.
15. If your target disappears when you go into the
Pinpoint mode, you've probably tuned it out by
pressing the button too close to the target or over
another piece of metal. Try again, this time pushing
the PINPOINT button over another piece of ground.
16. Don't waste a lot of time digging holes for targets
you can't find. If your hole keeps getting deeper
and wider, cover it up and go on. You may be over
a buried pipe or some other large deep target.

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. Unlike other metal
detectors, the discrimination level has little, if any, effect on the
depth capability of the CZ-20. Note, however, that the all-metal
Autotune mode has a wider search pattern and may detect a
little deeper. Depth is also determined by the size, shape and
conductivity of the target as well as the sensitivity setting of the
CZ-20.

AUTO TUNE

Set the DISC control to AUTOTUNE, for 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 a normal search mode.
The Autotune mode is useful to use in three situations:
1. Non-Trashy Areas. Since the Autotune mode has a
2. Highly Mineralized Soil or Sand. The Autotune mode
3. All Metals Searching. Evidence recovery teams,
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wider scan than the I.D. mode, you're less likely to
miss a good target when using it. Search in the
Autotune mode until you find a target. Pinpoint the
target using the PINPOINT button and then switch the
DISC control to "0" to identify it. The DISC control is
positioned so that you can switch back and forth
between AUTOTUNE and "0" with a flick of your thumb.
is recommended for black and gray beaches or
highly mineralized soil. Under these conditions it may
be necessary to lower the sensitivity level and
sweep several inches off the ground (see the notes
on p. 14) Gold nuggets are generally found in highly
mineralized soil so this will be the search mode of
choice for prospectors.
archeologists and professional underwater treasure
hunters will often opt for the deep search, all-metals
Autotune mode.
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