You can search silently or at any level of con-
stant sound. It is recommended that you
always operate the instrument at a minimum
level of sound. You can hear the audio
increase sharply whenever a target is encoun-
tered. Also, you will be able to hear even the
faint signals that sometimes occur on tiny tar-
gets or deeply buried objects. When head-
phones are used, it will usually be necessary to
decrease the threshold level since sound is
more audible through headphones.
After you have made audio adjustments, press
AUDIO to reenter your previous operating
mode.
Battery
The Investigator G-500 will indicate accurately
the condition of standard (carbon or alkaline)
or NiCad rechargeable batteries with the four
squares after BATT.
to existing environmental conditions.
Press (+) to increase detection depth. Press
(-) to decrease.
A single touch and release adjusts the level in
a small increment. A continuous pressing
results in a continuous adjustment. The Upper
Scale on the Graphic Display indicates 18 lev-
els that are available. Minimum depth is 25%.
When you have made your adjustment, press
DEPTH again to reenter an operating mode.
Audio Threshold
When the AUDIO touchpad is pressed, the dis-
play screen will appear (diagram below) with
factory setting indicated on the Upper Scale.
Use the + and - touchpads to adjust the thresh-
old, which is the level of sound that is constant-
ly being produced by the Investigator G-500 as
it is being scanned.
23
PN 1529570 Rev B
22
Garrett G-500
