Functional Tones - Minelab F3 Mine Detector Operation Manual

Where a minimum metal mine threat exists, the F3 MUST
be operated with the Black Sensitivity Endcap.
Depending on the size of the target and the depth of
detection required, the Red Sensitivity Endcap may not be
suitable for use. It is recommended that, prior to
operational use, the capability of the F3, fitted with the Red
Sensitivity Cap, be tested against the local threat to ensure

3.3 Functional Tones.

The F3 emits tones that vary in pitch and volume to alert an operator
to targets, automatic detector functions or equipment alarm
conditions. The following table summarises the tones that an F3 can
produce:
Tones
Start-Up
Threshold
Ground Balance
Target
**WARNING**
detection occurs.
Event
Internal checks when
the F3 is switched on
Signifies correct
operation of detector
Indicates successful
Ground Balance
procedure completed
Indicates metal target
detected
18
Description
Four rising tones over
12 seconds
Steady low volume
continuous tone
One fast high pitched
double beep
Increases volume
(compared to
Threshold Tone) and
high or low pitch
depending on target
metal composition and