5. Pass the same metallic targets (as used in 2)
across the bottom of the searchcoil and listen
for the sound to increase only when certain
items are scanned. Notice the specific
segments on the Upper Scale of the display
that are highlighted when various targets are
passed across the searchcoil.
6. Perform the same tests in the JEWELRY
Mode and observe the sounds produced by the
GTP 1350.
7. Experiment with the ACCEPT / REJECT
touchpad. Notice which of the 24 segments are
illuminated as you identify various targets.
8. Keep written records of the results and use
them when hunting in the field.Remember that
your detector is a sensitive electronic
instrument, but is engineered to withstand
rugged treatment in the outdoors. Use your
Garrett detector to the fullest extent possible,
39
Bench testing enables you to test typical trash items and
learn about the discrimination capabilities of the GTP
1350 before taking it into the field or attempting to alter
the Discrimination settings. The following tests should be
performed as shown below with the searchcoil
perpendicular to a bench, floor or other non metallic
object.
1. Select the ZERO Discrimination Mode. (See
page 14)
2. Pass various metallic objects across the
bottom of the searchoil at a distance of about
two inches. Each target will cause the sound to
increase, which represents true, non-
discriminating operation.
3. Select the COINS Mode (See page 14)
4. Press the OPERATE touchpad
38
Bench Testing
Summary of Contents for GTP 1350
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