B&G H2000 Pilot *DISCONTINUED* - Manual (Page 213)

HB-0845-06 213
(f) The transducer is faulty or has been damaged. The
transducer should be checked for any damage, barnacle growth or
thick layers of paint. If it needs cleaning this should be done with
a scrubbing brush. The face of the transducer may have a thin
coat of anti-fouling applied to it making sure no air bubbles are
trapped in the paint. The cable should be checked for damage.
The resistance between the BLUE and BLACK cores should be in
the region of 0.5 to 5 Ohms and resistance between the screen and
the cores should be infinity.
CAUTION:
Resistance measurements should only be made with the
transducer disconnected from the Processor Unit.
(g) The gain of the receiver has been set too low. It is possible to
adjust the maximum gain via CAL VAL1 on gain. This is
normally set to 30 and should not be adjusted.
6.3.2 Yacht Moving
Symptom: Display shows pattern below when yacht is
moving:
-
- -
-
This is most often an indication of difficult sounding
conditions, but can also indicate a poorly located transducer.
Possible causes:
(a) Difficult sounding conditions and/or depth sounder unable to
track rapidly changing bottom. If coming into shallow water
yacht should slow down and proceed with caution.
(b) Aeration in the water, most often caused by the wake of
another vessel. This can persist in the water for a long period after
the passing of the vessel. In some instances the depth sounder will
indicate the depth of the aeration layer caused by a large vessel.