Bench Tests - Garrett ACE 350 Owner's Manual

BENCH TESTS

You should conduct bench tests to become more familiar
with your detector's operation. To conduct a bench test:
1. Place the searchcoil on a flat, non-metallic surface that is
several feet from other metallic objects.
2. Select the ZERO mode.
3. Pass various metal objects (coins, bottle caps, nails, etc.)
across the searchcoil at a distance of 3 to 4 inches. Your
metal detector will audibly and visually identify the target.
4. Perform this test in all the modes available on your
detector. Observe the sounds as well as the graphics on
the LCD that are made in each mode.
5. Record the results of your bench tests and refer to them
when hunting in the field.
24 Garrett Metal Detectors
Once you have determined how your test targets register
on the Target ID during bench tests, test them in the soil. Bury
your targets at recorded depths to create a "test plot." Note
how various targets read based upon whether they are lying
in the ground flat or at various angles.
Keep accurate records or surface markers to indicate your
test plot targets and their depths. Try testing these targets
again in several months after the ground has settled, during
periods of extreme drought or after a soaking rain. Take note
of any changes in how these targets are detected.
The following illustrations depict a ACE 350 in ZERO Mode
scanning selected targets during a bench test. (Note: these are "air
tests" conducted in a pristine environment. The target ID scale can
be influenced by the soil as well as the conductivity, permeability,
thickness, size, shape and orientation of the target.)
TARGET TARGET ID DISPLAY
Small,
rusty iron
nail
Aluminum
foil
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ACE 350™