Sweeping Procedure - Minelab F3 Compact Operation Manual

Noise Cancel and Audio Reset procedures can be performed any time the
F3 Compact becomes noisy, uneven or rises in volume.
Once Noise Cancel and/or Audio Reset are complete, continue with Standard
Procedure STEPS 2 and 3. Figure 21 illustrates this sequence. Once completed,
the F3 Compact can commence operations in compliance with local Standard
Operating Procedures.
NOTE
Having completed STEPS 1, 2 and 3 the F3 Compact remembers the Ground Balance
setting even after the detector has been switched off.
After Noise Cancel is completed the F3 Compact remembers the frequency selected
to minimise interference, even if the detector is switched off.

Sweeping Procedure

The F3 Compact should be swept with a smooth even motion at a speed of
0.6 m/s (2 ft/s). If the detector is swept too fast or too slow, small or deep targets
may be missed. The coil should always be kept at the same height above the
ground with care taken to ensure that the coil is not inadvertently raised at the
end of each sweep (see Figure 22).
Direction of
Movement
Mine Lane
Figure 22: Sweeping procedure
F3 Compact Operations Manual Operating Procedures | 29