B&G H2000 Pilot *DISCONTINUED* - Manual (Page 150)

HB-0844-04
6-8
6.3 DEPTH SOUNDER
Fault finding on the depth sounder is often difficult as depth sounder
performance is dependent on many factors: transducer type and installation,
boat speed, electrical noise, sea state, sea bed conditions, air and plankton
in the water. Indications of problems with the depth sounder normally
manifest themselves in one of three ways:
(a) display shows (Floating Bars)
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(b) display locks down showing depths in the range 0 to 1.5m,
or
(c) display shows random deep depths
All of the above symptoms can be caused by external conditions so care
and additional tests should be performed before concluding that the fault lies
within the depth sounder. There are two values output by the depth sounder
that can be of assistance in diagnosing problems, these are receiver gain
and noise that can be found in the PARAMTR Menu on a FFD.
6.3.1
Yacht Stationary
Symptom: Display consistently shows (Floating Bars) when well within the
range of the sounder with the yacht stationary in the water:
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This is an indication that no consistent signal is being received by the depth
sounder.
Possible Causes:
(a) The transducer is not connected.
(b) The transducer is not in its housing.
(c) If sounding through the hull there is not enough oil in the
housing or the hull material is not suitable to sound through.