Ground Reject Procedure - Fisher Gold Bug 2 Operating Manual

GROUND REJECT PROCEDURE

When your Gold Bug-2 is properly tuned or "ground balanced,"
it will have only a minimum response to ground minerals when
the search coil is raised or lowered. Precise adjustment of the
GROUND REJECT control is critical to your success. The lower the
MINERALIZATION or the higher the SENSITIVITY settings, the more
important it is to maintain proper
ground rejection.
If you
MINERALIZATION setting, you may
have to retune your Gold Bug-2
slightly to maintain optimum
performance.
GROUND REJECT setting should be
close enough for pinpointing or for
a quick check in one of the other
modes. At worst, a change in
modes will require only a quick fine
tuning.
To tune your Gold Bug-2, follow these steps:
Figure 10.
Tune your Gold Bug-2 by bobbing
the search coil up and down while
adjusting the GROUND REJECT
control.
change
However,
1. With your controls still set as
2. Lower the coil to within an inch
3. Your objective now is to adjust
the
the
Figure 9.
The
control consists of a coarse-
adjustment knob on top of
a fine-adjustment knob.
described in the "Turn On
Procedure" (See page 12), hold
the search coil parallel to and
about 6 inches above the
ground.
or two of the ground and
quickly raise it. Note that the
threshold tone becomes louder
as you
disappears when you raised it
and finally returns to normal
when you hold it 6 inches above
ground.
GROUND REJECT
lower the coil,
13