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on either side. The AT Pro is now programmed to find the
missing earring based on the conductivity of its matching
pair.
Note: The notch discrimination function can be used
to modify each Mode's discrimination pattern. Notch
Discrimination modifications made while in CUSTOM (either
in Standard or Pro mode) will be retained when the detector
is switched OFF. However, all changes made to the Notch
Discrimination pattern while in ZERO or COINS modes will
return to the factory settings when the detector is switched
OFF and back ON again.
Iron Discrimination—The AT Pro features a high-resolution
iron discrimination adjustment. This additional resolution
allows more precise control of how much iron discrimination
can be applied. The level can be adjusted from 0 (no iron
discrimination) to 40 (maximum iron discrimination).
24 Garrett Metal Detectors
High-Resolution Iron
Discrimination Setting
IRON DISC Pushbutton
Use the (+) or (-) IRON DISC
pushbuttons to adjust the Iron
Discrimination up or down.
The small two-digit number
above the words "IRON DISC"
on the LCD indicates the iron
discrimination setting.
The examples shown below illustrate how an iron object
can often "mask" out the signal of an adjacent good
target when too much iron discrimination has been applied.
Using the AT Pro's High-Res Iron Discrimination, apply just
enough iron discrimination to reject the undesired iron nail
shown in this example. By using only a minimal amount of
iron discrimination, the detector will detect the combined
conductivity of the coin and nail together thus overcoming the
potential "masking" problem.
Illustration 1
Iron targets, such as the nail shown in Illustration 1, can sometimes
mask a good target's signal. If too much iron discrimination is
applied, the good target (seen in Illustration 2) can be missed.
Read page 26 to learn how to apply the proper amount of iron
discrimination to eliminate the nail shown in Illustration 1 and still
detect the good target shown in Illustration 2.
Illustration 2
25
AT Pro International™
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