F3 Operations Manual
20
NOTE
Circuitry within the F3 ensures that its performance remains
consistent regardless of the type or charge state of the batteries.
When the batteries can no longer supply the necessary power to
sustain correct performance of the detector, a Low Battery Alarm will
alert the operator.
3.4 Test Piece – Functional Test. The F3 is supplied with a
Test Piece specially designed to confirm that the detector is working
to correct specifications. The sensitivity of the detector should be
checked with the Test Piece before, during and after demining
operations, (in compliance with local Standard Operating
Procedures). In some instances, a user may prefer to use inert
mines as test pieces because they represent the local threat.
Minelab recommends that the detector always be first tested with
the supplied Test Piece before local test pieces are used for testing.
NOTE
Maximum sensitivity is only available 30 seconds after the Threshold
Tone is heard. Do not test the detector with the Test Piece until 30
seconds after the Threshold Tone is heard.
When Low Battery Alarm occurs the operator must
immediately STOP demining operations. The F3 should be
switched off and new or recharged batteries inserted into the
Battery Pack (Refer to Section 4.7 for instruction on changing
batteries).
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