Installation manual

Introduction
Note
Note that SH80 sonars shipped before August 2003 use a
different Processor Unit; the APC10. These sonars do not have
the Interface Unit fitted. All interfaces to peripheral equipment
are then handled by the APC10.
Sonar room units
The Transceiver Unit is located in the sonar room, close to the
Hull Unit. One signal cable is used for communication with
the Interface Unit in the wheelhouse. The transceiver performs
the signal processing and the digital beamforming of the 240
transmitters and 480 receiver channels, which are located on the
eight identical transceiver boards.
The
Hull Unit is designed t o be lowered 1.0 meters below the
ship’s hull. The t ransducer can also be lowered to any selected
middle position. Note that in case of voltage failure, the H ull Unit
can be manually raised or lowered by means of a hand crank.
The cylindrical
Transducer array allows the sonar beam to give
full 360 degrees coverage of the water volume down to -60
degrees. The sensor for the electronic stabilization of the sonar
beams is housed in the Motor Control Unit, which is mounted
on the Hull Unit.
The sensor for the electronic stabilization of the sonar beams
is housed in the Motor Control U nit, which is mounted on the
Hull Unit.
WARNING
If the transducer hits larger o bjects 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 in the top of the shaft.
To prevent larger leakages in such a case, do not
raise the transducer shaft t o the upper position.
To prevent serious damages it is therefore of great
importance to have a good pump and warning
system in the sonar room.
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