Tone Roll Audio (Pro Mode); Target Id Information - Garrett AT Pro Owner's Manual

Tone Roll Audio (Pro Mode)

This feature of Pro Mode provides the user with more
audible target information to help identify targets, particularly
flat iron objects, such as bottle caps and washers. Standard
Mode audio produces a single tone based upon the target's
strongest signal. For flat iron objects, this single tone is often
the same as a good target. Tone Roll Audio, however, provides
a variance of target tones as the searchcoil approaches and
passes over the target. These varying tones of audio provide
better overall target information and identification.
Tone ID Comparison: Standard vs Pro Mode
Bottle cap
While in STD Mode, bottle caps, steel washers and other flat iron objects
often sound like good targets, producing a high tone response. This is
because the bottle cap's shape and flat surface resembles a coin which
can trick the detector. In PRO Mode, however, the bottle cap will produce a
very distinctive response with multiple tones. As shown, the bottle cap will
produce a distinctive response of Low-High-Low as compared to the coin's
response of only High tone.
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Cursor to indicate a target's probable identity. Ferrous (iron)
targets will indicate on the left half, non-ferrous targets that
are thin or have low conductivity will indicate in the middle,
and thick or high conductivity targets (e.g. thick silver) will
indicate at the right.
conjunction with the Target ID Legend, indicates the probable
identity of a detected target. The upper scale consists of
Coin
twenty (20) graphic segments for Target ID.
Scale, continually indicates the discrimination pattern. The AT
Pro will produce an audible target response for the pixels that
are switched on, and no audible response for those that have
been switched off. The Target ID Cursor will always indicate
all targets.
in the "Discrimination" section).

TARGET ID INFORMATION

Target ID Cursor
Target ID Legend
(Upper Scale)
Target ID Legend—Works in conjunction with the Target ID
Target ID Cursor (Upper Scale)—The Target ID cursor, in
Lower Scale—The lower scale, or Notch Discrimination
The discrimination pattern can be adjusted (as described
Discrimination
Pattern
(Lower Scale)
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AT Pro™