B&G H2000 Pilot *DISCONTINUED* - Manual (Page 151)

HB-0844-04
6-9
(d) 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 orange/green cores should be in the region of 0.5 to 5
Ohms and resistance between the screen and the cores should be
infinity.
Resistance measurements should only be made with the transducer
disconnected from the Processor Unit.
(e) 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 (Floating Bars) when yacht is moving:
-
- -
-
This is most often an indication of difficult sounding conditions, but can also
indicate a badly positioned 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.
(c) Poorly sited transducer. Determine what conditions cause the
problem by doing some manoeuvring trials in an area that has a
relatively uniform depth, a solid bottom and is clear of the wake
from other boats. First determine the maximum speed at which