Sometimes it may not be possible to remove the effects of interference
completely by using the Tune control alone.
Once the detector has been tuned for a particular location, it should not
require readjustment unless conditions change or new interference is
introduced, e.g. other detectors being used in the same area. If the
interference persists after tuning, consider using the Coil switch set to
Cancel position.
Boost (Shallow/N/Deep)
Boost selects the type of processing and filtering applied to the detector
signals.
• N (Normal) may be used for general detecting conditions. This
does not boost any signals.
• Shallow boosts signals from small targets close to the surface. This
makes faint target signals easier to hear. This setting may also boost
any ground noise, therefore Shallow is well suited for 'quiet'
ground conditions.
• Deep may be used when searching for large targets at depth.
This smooths the threshold and target signals from small targets, making
small changes in threshold easier to hear.
Selection of the more suitable position should be after considering both
target size/depth and ground conditions.
NOTE When Boost is changed, Threshold may also need to
be adjusted.
External amplifiers may be used in addition to the Boost switch,
provided that they have loudness limiters built in. This prevents loud
signals becoming unpleasant or dangerous to the user's hearing.
DETAILED OPERATING INSTRUCTIONS
32
OPERATION
5
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