No-Motion Mode - Fisher Gold Bug Operating Manual

PINPOINTING
NO-MOTION MODE PINPOINTING
Pinpointing is even more precise in the No-Motion mode. You
don't have to keep the search coil moving and the VCO (Voltage
Controlled Oscillator) circuitry responds to the target with a more
distinct increase in pitch as well as volume. For very faint targets
or in extremely mineralized ground you may have to re-ground
adjust the Gold Bug when you switch to the No-Motion mode.
For most situations however the following simple procedure is
adequate.
1. Place the coil lightly on the ground away from
the target area and switch to the No-Motion mode.
If you don't immediately hear the faint threshold
tone, push and hold the retune button for a couple
of seconds and then release it.
2. Raise the search coil about an inch.
a. If the threshold tone remains about the same
just move the coil back and forth over the target
area as you would in either the Motion or Auto-
Tune mode. This time however you can stop the
coil to determine exactly where the strongest
response is.
b. If the threshold increases to aloud level when
you lift the coil, push and release the retune button,
then lower the coil slightly and move back to the
target area for pinpointing as in 2.a. above.
c. If the threshold fades when you lift the coil,
you'll still be able to pinpoint most targets from
an inch or so above the ground. If not, lower
the coil to the ground again to regain the
threshold tone and lightly "scrub" the target area.
3. For quick and accurate pinpointing of very
strong signals, push the retune button again close
to the center of the target area. This "tunes-out"
most of the target so you will receive a response
only directly over or very nearly over the target.
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