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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:
**WARNING**
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
detection occurs.
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