Garrett Metal Detector GTI 1500 Owner's Manual page 40

ing good targets in the lower conductivity
range, items generally sought by most
relic hunters.
Zero Discrimination
This mode, shown above, permits you
to hunt with no discrimination and offers
a method of "dual-mode" hunting. Your
detector will give a "beep" to announce
any metal it scans over while a cursor
indicates it. You can then press Last Mode
to return to another of the Discriminate
modes to "quick-check" a target.
Custom
This mode was designed to be set by
the operator. When the detector leaves
the factory, Custom has been set to the
Coins mode. Through use of the ACCEPT/
REJECT touch pad, a hobbyist can modify
this mode's discrimination to individual
specifications. And modifications will be
0 - Garrett Metal Detectors