Simrad SU90 - Measuring the Self-Noise

SimradSU90
6[Bridge]Lowerthetransducertoitslowerposition.
7[Bridge]Hoistthetransducerbackuptoitsmiddleposition.
8[Bridge]Hoistthetransducerbackuptoitsupperposition.
9[Bridge]Lowerthetransducertoitslowerposition.
10[Bridge]Hoistthetransducerbackuptoitsupperposition.
11[Bridge]Notifythesonarroomtoperformthenextstep.
12Setthehoist/lowerswitchS302intheMotorControlUnittoSTOPposition.
[_____]Ok
13[Bridge]Switchoffthesonar.
14[Bridge]Notifythesonarroomthatthetestisnished.
Measuringtheself-noise
Purpose
Thistestprocedureallowsyoutocheckthenoiseconditions.
Note
Procedure
1Startupthesonar.
[_____]Ok
2MakesurethatTXPowerissettoOff.
[_____]Ok
3Makesurethatanydummyloadhasbeendisconnected.
[_____]Ok
4Selectthefollowingparametersinthemenusystemtopreparethesonarforthe
self-noisetest.
aOpentheSetupmenu.
bLocatetheTestbutton,andclickittoopentheSystemTestmenu.
cClicktheTestCongbuttontoaccesstheTestCongparameterdialoginthe
lowerpartofthemenueld.
dClickNoise&VRtoselecttheNoisetestmenusettings.
Afterthethesepreparationshavebeendone,theecholevelfortheselectedaudio
beamwillbedisplayedintheEchoLevelbuttonintheSystemTestmenu.
[_____]Ok
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