Simrad ST90 - Turning on the ST90 to Passive Mode

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4RemovethedoorfromtheTransceiverUnit.
aLoosenthefourboltsthatareusedtosecurethedoor.
bRemovethedoorcarefully.
5Onthepowersupply,settheServiceswitchtoOff.
6SettheServiceswitchtoService.
7Makesurethattheinternalfansstart.
8MakessurethatallrelevantpowerLEDsonallthetransceiverboardsarelit.
9SettheServiceswitchtoRemote.
10MakesurethatthefansintheTransceiverUnitstop.
11ClosethedoorontheTransceiverUnit.
aPlacethedooronitsframe.
bTightenthefourboltsthatsecurethedoor.
Relatedtopics
Settingtoworksummary,page242
TurningontheST90forthersttime,page276
TurningontheST90toPassivemode
InordertousetheST90,youmustrstturniton.Inthissituationwedonotwantthe
ST90totransmit,sowewillleaveitinPassivemode.
Prerequisites
ThisprocedureassumesthattheentireST90installationhasbeeninspected.Allpower
sourceshavebeenmeasuredandveried.Allsystemcablesandconnectorshavebeen
checkedandtested.
Note
ThetransceiverplugisnotconnectedtotheTransceiverUnit.
Context
TheST90programstartsautomaticallywhentheProcessorUnitisturnedon.
Caution
YoumustneverstartST90transmissions("pinging")whentheshipisindrydock.The
transducermaybedamagedifittransmitsinopenair.
SimradST90InstallationManual