
Operationalprocedures
•Afterashortperiodyouwillseethesonarpictureon
thedisplay.
•IfthesonarsystemhasbeendisconnectedfromAC
power,theProcessorUnitmustbestartedmanually.Use
theon/offswitchbehindthelidonthefrontpanel.
3Checkthatthewaterdepthbeneaththekeelissufcientto
lowerthetransducer.
4PresstheDownbuttononthecontrolpaneltolowerthe
transducer.
•Thegreenlampnexttothebuttonwillash,andan
audiblesignalindicatesthatthetransducerislowered.
•Whenthelowerpositionhasbeenreached,thelamp
willbelitcontinuously,theaudiblesignalstops,and
thetopbuttonintheStatusparameterdialogshows
Transducer:Down.
•Bydefaultthetransmitpowerisdisabledwhenthe
sonarispoweredup.Thisisforsafetyreasons.Onthe
Horizontalmenu,youwillseethattheTXpowerbutton
ashestoremindyouofthis.
5ClicktheTXpowertoselectFull.
Howtoswitchoffthesonar
ThisprocedureexplainshowtopowerofftheSimradSH90.
1PresstheUpbuttonontheOperatingPanel.
•Thegreenlampnexttothebuttonwillash,andan
audiblesignalindicatesthatthetransducerishoisted.
•Whentheupperpositionhasbeenreached,thelampwill
illuminatecontinuously,theaudiblesignalstops,andthe
upperbuttonintheStatusmenushowsTransducer:UP.
2PressthePowerbuttonontheOperatingPanel,andkeepit
depressedforapproximatelytwoseconds.
323775/B
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