Discrimination; Notch Discrimination - Garrett AT Pro Owner's Manual

Notch Discrimination—The AT Pro's NOTCH DISC
pushbuttons are used in conjunction with the ELIM pushbutton
to eliminate trash objects from detection such as foil or pull-
tabs.
The AT Pro has 12 pixels or "notches" of discrimination (in
addition to the 40 points of High-Res Iron Discrimination).
Any combination of these pixels can be switched on or off
based upon your preference. There are two primary methods
for modifying the Notch Discrimination Pattern to reject a
specific type of trash or unwanted item.
The first method uses the NOTCH DISC and ELIM
pushbuttons (seen above) to manually modify the Lower
Scale's Notch Discrimination pattern.
Use the (+) or (-) NOTCH DISC pushbuttons to move the
Target ID cursor to the left or right. Next, press the ELIM
pushbutton to eliminate or activate the pixel located on
the Lower Scale, directly below the Target ID cursor. (See
illustrations on next page.)
22 Garrett Metal Detectors

DISCRIMINATION

NOTCH DISC
Pushbutton
ELIM
Pushbutton