Minelab F3 COMPACT Service Manual page 8

F3 COMPACT Service Manual
_______________________________________________________________________________________________________________________
The coil should not be moved nor should metallic objects be brought near the coil during the
If functioning correctly, the noise cancelling procedure will commence with 2 single
•
beeps followed by 45 seconds of sharp triple (3) beeps and finish with 4 single beeps.
During the 45 seconds the F3 COMPACT scans the environment searching for the source
•
of any electrical interference. Once detected, the detector will automatically select a
different operating frequency to eliminate or reduce the interference.
e. Audio Reset Test. This test confirms the Audio Reset button (also the ground balance
button) and the associated wiring and circuitry operates correctly. The objective is to ensure the
detector returns to its quiet steady state. The test is conducted as follows:
Hold the coil at least 60cm (24in) off the ground and away from any metallic objects.
•
Induce a detection tone increase in volume by slowly moving the coil toward a metal
•
object, once the detection tone increases in volume hold the detector stationary.
Whilst there is a detection tone, press and immediately release the green audio reset
•
button. (Figure 5)
Within two (2) seconds, the detector should return to its correct quiet sound level.
•
Figure 4: Noise Cancel
NOTE
Noise Cancel.
8