AQ1B Underwater Metal Detector User Manual
6
Diver prepared for EOD survey using AQ1B/20cm - Harness mounted
2.
The Bonephone should be placed under the hood, if no hood is worn it can be
placed under the strap of the facemask or under a suitable neoprene headband.
Position the Bonephone so that it is on a bony part of the head close to the ear.
N.B. NEVER PLACE THE PHONE DIRECTLY OVER THE EAR AS
THIS COULD INTERFERE WITH PRESSURE EQUALISATION ON
THE EARDRUM.
3. Dive to the search area to be searched.
4. Switch the unit on and rotate the SET AUDIO control to achieve the audio
threshold point keeping the search loop at arms length and up from the seabed,
this avoids detecting any metallic part of the personal diving equipment or any
buried items.
5.
Search by scanning the loop from side to side close to the seabed in a fanning
action, Avoiding passing the loop close to regulator, air tanks or weightbelt as
these or any other metal object on the diver, will give false responses.
6. If too much signal is obtained from the seawater such that the ‘SET AUDIO’
control will not achieve the desired threshold, turn the ‘REJECT’ control
clockwise until the ‘SET AUDIO’ control comes back into range.
Note: Different water depths will make a small difference to the threshold
setting which can be readjusted by the control knob. This effect does not
occur in fresh water.
