Garrett Metal Detectors Metal Detectors GTAx 550 User Manual
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Mode A (Zero Discrimination)
You will want to hunt in this detection mode, which
is preset with no discrimination, when searching for
caches or deep relics. You may also wish to hunt in
this mode when hunting in areas with many targets
spaced closely together. This will help to identify
individual targets and improve recovery of coins
and other treasure. Gold hunting will also be carried
out in a ZERO discrimination mode. Because no
discrimination is programmed in this mode, your
detector will give an audible signal announcing
every piece of metal it scans over. Remember, you
can always return to the alternate discrimination
mode to quickly check a target by pressing the LAST
MODE touchpad.
Mode B (Coins)
Discrimination preset at the factory mode is designed
to eliminate the detection of lower conductivity trash
targets normally encountered in coin hunting such
as foil, nails and most pull tabs. Bent pull tabs and
pull tab pieces may not be eliminated from detection.
Successful treasure hunters, however, expect to dig
some junk on occasion.