Overload Audio; Coin Depth Measurement - Garrett Graphic Target Profiling 1350 Owner's Manual

OVERLOAD AUDIO

Very large and / or close targets may cause the GTP
1350's circuitry to overload, resulting in inaccurate
Target ID and Profiling information. If target overload
occurs, as indicated by a machine-gun sound, raise
the searchcoil a few inches until the overload audio
ceases.

COIN DEPTH MEASUREMENT

Pinpoint the target as mentioned in the PINPOINTING
section. While still pressing the PINPOINT touchpad,
check the Lower Scale to determine the coin-depth
in inches. You will notice that coin-depth always
indicates the shallowest (most accurate) reading
and will not be overwritten by subsequent off-center
scans.
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