Open The Audio Quick Menu; Volume Gain; Threshold Level - Minelab CTX3030 Instruction Manual

CTX 3030 Instruction Manual
Function Buttons

Open the Audio Quick Menu

Press and hold the Audio button at any time to display the Audio Quick Menu and
adjust your audio settings. The menu options are:

• Volume Gain

• Threshold Level

• Volume Limit
• Threshold Pitch
For Threshold Level and Volume Limit, the currently used audio output will be
adjusted.
Volume Gain
Range: 1–30
Factory Preset: 24
Volume Gain controls the amplification of a target's audio response, relative to the
target signal strength. This audio setting is most similar to volume adjustments in
other devices (e.g. radio or television volume controls).
With a setting of 1 the target signal will not be amplified. Weak target signals will
sound quiet, medium target signals will sound mid-range and strong target signals
will sound loud. There will be greater differentiation between target signal strengths;
however, weak signals will be harder to hear.
With a setting of 30, all target signals will be amplified to a loud audio response. At
this setting there will be less differentiation between medium and strong signals,
but weak target signals will be easier to hear.
Threshold Level
Range: 1–30
Factory Preset: 30
The constant background 'hum' produced by the detector is called the Threshold.
Variations in the Threshold help you to hear very small and deep targets. When a
rejected target is detected, the Threshold sound will 'blank' (become silent) indicating
that an undesired target is underneath the coil.
The Threshold is controlled by Threshold Level and Threshold Pitch. The correct
adjustment of both Threshold settings will depend on your hearing and
environmental noise such as wind, waves and machinery.
Adjust the Threshold Level to a faint,
audible hum. This will highlight variations
in signal response which may indicate the
presence of a target. If the soil conditions
change the Threshold Level may need
adjustment.
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