Garrett Metal Detectors Metal Detectors GTAx 550 User Manual
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interference and irregular ground mineralization
may sometimes require reduced sensitivity which
usually results in less detection depth.
Do not worry about losing "deep" targets when
you reduce this setting. You will not lose any depth
since you will always be operating as deeply as soil
conditions permit.
Attempting to operate above a sensitivity level that
permits a quiet and stable audio threshold may
actually cause you to miss deep targets you would
have found had you not "pushed" the detector.
5. ACCEPT / REJECT - Permits acceptance or
rejection of specific target segments shown on the
Lower Scale to establish discrimination notches.
6. SET AUDIO - Permits using the + and -
touchpads to regulate the audio threshold. When
the audio touchpad is pressed, the display screen
will appear, use the (+) and (-) touchpads to adjust
the threshold of sound that is constantly being
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