Kongsberg Simrad MF90, Installation Manual

Page: 316 / 426

314
476671/B
Testing the operating functionality of the MF90
system
Topics
Checking the hull unit lowering and hoisting functionality, page 314
Verifying system operation by means of the Element BITE functionality, page 319
Measuring the noise in passive mode, page 323
Verifying system operation by means of the Diagnostics functionality, page 325
Making a noise/speed curve to determine vessel noise, page 329
Checking the hull unit lowering and hoisting functionality
The hull unit is used to lower the transducer down below the ship’s hull when the MF90
system shall be used. This is a key functionality of the MF90 system. It is very important
that the hoist/lower function is tested before the MF90 system is put to operational use.
To test the lower and hoist functionality two tasks must be done at the same time.
Two persons are needed.
• One person must stay on the bridge in order to operate the MF90 system.
• One person must stay in the sonar room to make sure that the MF90 system starts, and
that the hull unit works properly.
Proper oral communication must exist between the bridge and the sonar room.
Note
This test can only be done if the water depth allows the transducer to be lowered completely.
If this is not the case, the vessel must be moved to another location, or the test must be
cancelled. Kongsberg Maritime cannot take responsibility for tests that are cancelled for
this reason.
Certain steps in the procedures are location specific. The steps marked [ Sonar room ] are
done in the sonar room. The steps marked [ Bridge ] are done on the bridge.
Simrad MF90 Installation Manual