Fisher M-SCOPE CZ-3D - Manual (Page 10)

“BOBBING” THE SEARCH COIL METHOD
This method takes a little more practice, but you may find it slightly
more accurate with fewer false signals from ground minerals.
“PUSHBUTTON” GROUND BALANCE METHOD
This will probably be your method of choice in all but the most
difficult of ground conditions. It’s fast, easy and accurate. You can
use this method in either the Autotune or Target ID mode.
1. With your controls set as in the “Turn-On” procedure,
(GROUND control at 10), hold the search coil parallel
to and 6 to 12 inches off the ground. Press the
PINPOINT button and hold it until you’ve completed
step 2. Make sure you’re at least three feet away
from any metal objects.
2. Still pressing the PINPOINT button, lower the coil to the
ground. Starting at 10, rotate the GROUND control
clockwise until you hear an audio tone. Then back
it off to the exact point where the tone disappears.
Release the PINPOINT button and you’re ready to
search.
NOTES:
1. If you get an audio response as you first lower the coil with the
GROUND control at 10, you’re probably over a piece of metal.
Move and try again.
2. If you get a sudden belltone not proceeded 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.
3. If you don’t get any audio response, or just a very faint one
as you rotate the GROUND control from 10 all the way to 0,
you’re probably in an area where there’s very little ground
mineralization. Just leave the GROUND control at 10 and
begin searching.
4. Recheck your ground balance occasionally and make sure you
haven’t accidentally moved the MODE switch.
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