Simrad SU90 - Page 37

409977/B
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4Makethefollowingpreparations.
aOntheMainmenu:
•SetRangeto1500m.
bOpentheOperationmenu.
•SetTxPowertoOff.
cOpentheActivemenu.
1SetPulseTypetoCWMedium.
2SetFrequencyto20kHz.
3SetVerticalTXSectortoNarrow.
4SetNoiseFiltertoOff.
5SettheBottomFilterThresholdtoOff.
dOpentheSetupmenu.
•SelectBITEtoopentheBITE(Built-InTestEquipment)dialogbox.
5SelectTransceivertoopenthepage.
Thispageprovidesagraphicpresentationofthe12transceiverboards.The
presentationreectstheirphysicallocationintheTransceiverUnit.Only
staticinformationisprovided.TheBoardInformationparametersofferkey
informationaboutthesupplypowertotheselectedtransceiverboard,aswellas
theenvironmentalconditions.
6Makesurethatallthe12transceiverboardsarefullyfunctional.
7SelectTransducertoopenthepage.
TheTransducerpagepresentsalltheelementsthatareusedintheSU90transducer.
Thepresentationattemptstoorganizetheelementsinthesamemannerasinthe
physicaltransducer.Thetransceiverboardsareshownas"buttons".Selecta
transceiverboardtohighlighttheelementsthatarephysicallyconnectedtothe
board.
8SelectReceptionTesttostartanautomatictestoftheindividualtransducerelements.
ThereceptiontestvalidateseachsingleelementintheSU90transducer,andreturns
thestatususingasimplecolourcoding.
•Green:Thetransducerelementisfullyoperational.
•Red:Thetransducerelementoffersreducedperformance.
•Black:Thetransducerelementisnotworking("dead").
Formoreinformation,observethetooltipprovidedforeachelementrectangle.
9Verifythatthemaximumnumberofunserviceable("dead")elementsdoesnot
exceed4.
Asmallnumberofunserviceabletransducerelementsareaccepted,evenfor
operationaluse.Thisisregardedas"gracefuldegradation”.
TestingtheSU90operationalfunctionality