User manual

16 - Garrett Metal Detectors
+ & -
These touchpads permit precise regulation
of the GTI 2500.
You will note that on certain Menu adjust-
ments each press of a touchpad causes
segments on the Lower Scale to move
rather rapidly either to the right (+) or to
the left (-). After 20 movements on the
Lower Scale, an Upper Scale segment will
move. This operation is similar to that of
the decimal system.
The (+) and (-) touchpads enable the fol-
lowing regulation:
• Permit alternation between the five
Discriminate search modes.
• Permit adjustment of levels of Sensitivity
(Depth), Threshold, Frequency, Volume
and Tone and in Discriminate and All-Metal
modes; Surface Elimination in Discriminate
mode; and Auto Track in All-Metal mode.
• Activate (+) or turn off (-) Salt
Elimination, Belltone and Bi-Level target
audio in Discriminate mode.