Sensitivity; Ground Balance; Automatic Ground Balance; Manual Ground Balance - Garrett AT Pro INTERNATIONAL Owner's Manual

SENSITIVITY

SENSITIVITY
Pushbutton
The AT Pro has eight (8) settings for sensitivity. Use the (+)
or (-) SENSITIVITY buttons to step through the eight levels,
which are continuously shown on the LCD.
Use higher sensitivity levels when searching for very
small or very deep targets. Use lower sensitivity levels in
locations where the detector is behaving erratically due to
excessive metallic trash, highly mineralized soils, saltwater
beaches, electrical interference or the presence of other
metal detectors.
30 Garrett Metal Detectors
Sensitivity
Indicator

GROUND BALANCE

NOTCH DISC
GND BAL
Pushbutton
Pushbutton
(use with GND BAL)
GND BAL Pushbutton—Hold for Automatic Ground Balance
or use in conjunction with the NOTCH DISC pushbuttons for

Manual Ground Balance.

Detector performance can be negatively affected by ground
mineralization. The AT Pro can be ground balanced either
automatically or manually to cancel unwanted ground signals
and obtain maximum stability and target detection.
Automatic Ground Balance: Press and hold the GND BAL
pushbutton while continually "bouncing" or "pumping" the
searchcoil from 2 to 20 centimeters above the ground. When
there is a minimal audio response from the ground, release
the pushbutton and begin hunting. The ground balance value
will have been indicated in the center of the LCD. Low ground
GND BAL
Indicator
(only displays on
LCD when in use)
GND BAL Setting
(only displays
while in Ground
Balance mode)
31
AT Pro International™