Kongsberg Simrad MF90, Installation Manual

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476671/B
b When the transducer shaft stops, make sure this happens at the correct middle
position.
5 [ Bridge ]: Lower the transducer to its bottom position.
a [ Bridge ]: On the Operating Panel, press
Down
.
b When the transducer shaft stops, verify that the correct bottom position has been
reached.
6 [ Bridge ]: On the
Horizontal
menu, set
Range
to a suitable range.
7 [ Bridge ]: Set
Mode
to Bow Up .
8 [ Bridge ]: Start "pinging".
a [ Bridge ]: Set
Tx Power
to Low .
b [ Bridge ]: Make sure that echoes appear on the display presentation.
c Make sure that all the transceiver boards are fully functional.
Each transceiver board is fitted with several LED indicators. To verify normal
operation, check the LED activity on all transceiver boards simultaneously.
During normal operation, they will behave nearly identical. If the LEDs on one
board act suspicious related to the other boards, you may have an error.
d If possible, verify that you can hear the sound of the transmit pulse from the
transducer.
e [ Bridge ]: Set
Tx Power
to Medium .
f [ Bridge ]: Make sure that echoes on the display presentation appear stronger.
g If possible, verify that the sound of the transmit pulse is louder.
h [ Bridge ]: Set
Tx Power
to Maximum .
i [ Bridge ]: Make sure that echoes on the display presentation appear even stronger.
j If possible, verify that the sound of the transmit pulse is even louder.
9 [ Bridge ]: Set
Tx Power
to Off .
10 [ Bridge ]: Hoist the transducer to its upper position.
a [ Bridge ]: On the Operating Panel, press
Up
.
b When the transducer shaft stops, verify that the correct upper position has been
reached.
11 [ Bridge ]: Notify the sonar room that the test is finished.
12 Close the door on the Transceiver Unit.
a Place the door on its frame.
b Tighten the four bolts that secure the door.
Simrad MF90 Installation Manual