15
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.
The Autotune mode does have some advantages, however,
which make it useful to use in at least three situations:
1. Non-Trashy Areas. Since the Autotune mode has
a 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.
2. Highly Mineralized Soil or Sand. The Autotune
mode 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 note
under paragraph 7 on p. 15) Gold nuggets are
generally found in highly mineralized soil so this will
be the search mode of choice for prospectors.
3. All Metals Searching. Evidence recovery teams,
archeologists and professional underwater
Treasure Hunters will often opt for the deep search,
all-metals Autotune mode.
TARGET I.D.
When the DISC control is set in the 0-6 positions, the CZ-20 has
the ability to identify many types of small targets and, depending
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