
F3 INSTRUCTOR NOTES
Minelab Countermine Division Safety Through Excellence
21
Procedures.
NOTE
Noise Cancel and Audio Reset procedures can be performed at any time the
Threshold Tone becomes noisy, uneven, or rises in volume. Having completed
STEPS 1, 2 and 3 the F3 remembers the Ground Balance setting even after the
detector has been switched off. After Noise Cancel is completed the F3
remembers the frequency selected to minimize interference, even if the detector
is switched off.
Eighteen
Summary of Procedures
Explain the following summary of procedures.
• Remember that:
o Optional Procedures can be performed at any time during
operations but the F3 cannot be used for detection of targets
during these procedures.
GROUND BALANCE
TEST PIECE
NOISE
CANCEL
AUDIO
RESET
Y
N
N
Optional
Procedure
Threshold
L
Threshold
Noisy/Uneven?
Y
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