Simrad SH90 - REFERENCE MANUAL REV A Reference Manual page 18

Simrad SH90
16
WARNING
The power supply cabinet contains high voltages.
Do not open the cabinet door while the SH90 is
switched on.
Hull Unit
The is designed to lower the transducer 1.0 meters
Hull Unit
below the ship's hull.
The transducer can also be lowered to any selected middle
position. In case of voltage failure, the transducer can be raised
or lowered manually by means of a hand crank.
The sensor for the electronic stabilisation of the sonar beams
is housed in the Motor Control Unit, which is mounted on the
Hull Unit.
WARNING
If the transducer hits larger objects or bottom, the
transducer shaft may be bent, or - in worst case -
it can be broken off. A broken transducer shaft will
cause water leakage through the top of the shaft.
In such cases, do not raise the transducer shaft to
its upper position.
To prevent serious damage, you must have a water
pump and a warning system in the sonar room.
Transducer
The cylindrical
Transducer
360 degrees coverage of the water volume from +10 and down
to -60 degrees.
allows the sonar beam to give full
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