Touchpad Controls; Menu/ Ground Grab Computerized Ground Balancing; And; Pinpoint - Fisher F19 Owner's Manual

CONTROL PANEL
GAIN versus THRESHOLD
"Gain" increases, or multiplies, the strength of signals from buried metal objects.
For maximum detection of the smallest or most deeply buried objects, increase
the Gain. To minimize the weakest signals, reduce the Gain.
"Threshold" controls the detector's audio level. Positive threshold values
increases the audio response of weak target signals. Negative threshold
values suppress sensitivity.
For searching at maximum sensitivity
set threshold into the positive region, with a comfortable background-hum
volume level. Then increase Gain to a comfortable level, free of chatter.
Increase Gain to a slight amount of chatter if you can tolerate the chatter
while searching.
For silent searching, set threshold to a negative number, and also reduce
Gain if necessary. Silent searching will result in the loss of some sensitivity.

TOUCHPAD CONTROLS

1. MENU / GG
This button has a dual function, depending on the detection mode.
a. In DISC Mode, this control cycles through menu options. The active menu
option appears in bold on the display.
The menu times-out after 3 seconds.
b. In ALL METAL Mode, press-and-hold the button to activate GROUND GRAB
Ground Grab
to the phase of the ground you are searching over. See the section on
Ground Balancing for a more thorough explanation of this feature and the
reason for using it.
2.

and

a. In Discrimination Mode,
option.
b. In All Metal Mode,
Balance Setting.

3. PINPOINT

Press-and-hold to activate the Pinpoint feature.
Pinpoint temporarily engages a no-motion detection mode. Searchcoil
motion is not necessary to detect metal. Any metal within the searchcoil's
detection field will induce a sound. Pinpoint is generally used to determine
the exact location of a target previously detected in Discrimination Mode.
14
® allows you to set the detector's internal ground setting equal
and
and
, first set the Gain at a low level. Then
change the setting of the active menu
provide a manual override to the Ground
® .