Fisher CZ-7a PRO Quicksilver Operating Manual page 32

SEARCHING
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Effects of sweep speed, ground
mineralization and search mode
Unlike other metal detectors, the discrimination settings have
little if any effect on the depth capability of the CZ-7a Pro.
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-7a Pro.
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 no-
motion 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. The illustration below shows the CZ-7a Pro
search coil pattern and how it is effected by
sweep speed, ground mineralization and search
mode.
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1. Minimum depth
a. Very slow or very fast sweep speed
b. Highly mineralized soil.
c. Target I.D. search mode
2. Good depth
a. Moderate sweep speed
b. Moderately mineralized soil
c. Target I.D. search mode
3. Maximum depth
a. Moderate sweep speed
b. Non-mineralized soil
c. Autotune search mode
4. Missed target
Many targets well within the range
of you CZ-7a Pro will not be
detected unless you overlap your
sweeps.
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