HWM DXmic User Manual page 12

Using the DXmic
Select the sensor attachment required, either the acoustically shielded ground microphone foot,
or the optional handheld microphone unit with probe rods or tripod, which must be screwed into
the bottom of the microphone housing.
Microphone foot warning
The Microphone foot has a sensor attached that can be seen from the bottom of the unit. Users
must not attempt to unscrew this sensor as this will break internal components of the
microphone resulting in irreparable internal damage. Sensor
replacement is then the only option. Any necessary repair or
dismantling of the foot must be carried out by HWM Water or
by an authorised distributor.
If the sensor does become loose it should be tightened
manually so that it is "finger tight". Excessive force will cause
damage.
Sensor: Do NOT attempt to unscrew
Hand probe
For normal soft ground surfaces, the single pointed extension rod should be connected - do not
over-tighten the screw thread. For direct contact with underground fittings via access covers it
may be necessary to use the second extension rod. To do this, remove the single rod and
connect the extension rod - replacing the pointed rod again. If the rods have been over-
tightened, spanner slots allow easy removal.
Ensure headphones are paired / connected.
DXmic Controls
The DXmic is fitted with a LCD touchscreen for fingertip operation. Avoid operating with hard or
sharp material such as a ball point pen or a mechanical pencil except a polyacetal pen (tip
R0.8mm or greater).
DXmic Switch On/Off
Switch the unit on with a long (2 sec) press of the On/Off button on the front of the DXmic. The
unit will switch on and remain switched on until this same button is long pressed again, or is left
unused for a long period of time (1 hour from last interaction).
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