Minelab F1A4 Manuel de service télécharger pdf (Page 20)

Operations Manual

Page 20

5.1.2 Noise Cancel

Noise Cancel negates the effects of electro-magnetic interference.

Installations such as local television stations, radar transmitters and

electrical power cables emit signals that can interfere with the detector.

Performing a Noise Cancel procedure forces the detector to reset itself

so as to minimise the effects of any interference.

CAUTION

When the detector is emitting a repetitive warble without the coil being

moved it is necessary to perform a Noise Cancel procedure. The

detector will emit random sounds when operated in close proximity to

electrical storms, arc welders and other electrical equipment.

5.1.3 Audio Reset

The Audio Reset procedure resets the threshold level of the

background tone heard from the internal speaker or operator“s earset.

The best sound level for detecting mines and other ordnance is a faint

constant tone, just above no sound at all. Using Audio Reset achieves

this ideal setting, but it is possible for the level to drift. In this instance,

an Audio Reset procedure should be performed.

5.1.4 Battery Low

This Red LED flashes and the detector emits a loud oscillating tone

when the charge in the batteries drops to a predefined, low level. If the

F1A4 is operated while the LED is flashing and the oscillating tone can

be heard, the unit may become unstable.

The detector must not be used to detect mines and other ordnance

while the battery level is low.

WARNING

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Minelab F1A4 Manuel de service Page 20