Simrad SU90 - Operating Panel Power Supply; Audio Amplifier with Loudspeakers; Transceiver Unit; Hull Unit

SimradSU90
OperatingPanelpowersupply
Asmallcommercialpowersupplyisimplementedtoprovidestand-bypowertothe
OperatingPanel.ThepowersupplyisconnectedtotheProcessorUnit.
Audioamplierwithloudspeakers
AnamplierwithoneortwoloudspeakersmaybeconnectedtotheProcessorUnitto
providetheaudiooutput.
Theseoptionalitemsarenotprovidedwiththestandardsonardelivery.
IfstandardcommercialPCloudspeakersareused,thesearenormallypoweredbya
separatepowersupply.
TransceiverUnit
TheSU90TransceiverUnitislocatedinthesonar
room,closetotheHullUnit.
Thetransceiverperformsthetransmissionand
receptioncontrolofthe384transmittersand384
receiverchannels.12identicaltransceiverboards
areused.TheTransceiverUnitalsoholdstwopower
supplies,anEthernetswitch,andalargecapacitorbank.
TwoEthernetcablesareusedforcommunicationwith
theProcessorUnitonthebridge,whileathirdEthernet
cableisusedtocontrolthehullunit.
Thetransducercablesfromthehullunitareplugged
intothesidewalloftheTransceiverUnitcabinetusingaspecialplug.
TheTransceiverUnitismountedonthebulkheadusingpowerfulshockabsorbers.The
connectorsforpowerandinterfacearelocatedatthebottomofthecabinet.
HullUnit
ThestandardSU92HullUnitisdesignedtolowerthetransducer1.2metersbelowthe
ship’shull.Maximumvesselspeedisthen25knots.
TheoptionalSU93HullUnitwilllowerthetransducerto1,6metersbelowthehull.With
theSU93HullUnit,themaximumvesselspeedis20knots.
Whenthesonarisswitchedon,presstheDownbuttonontheOperatingPaneltolower
thetransducerintothewater.Beforethesonarisswitchedoff,presstheUpbuttonon
theOperatingPaneltoretractthetransducerintotheinstallationtrunkforprotection.
Ifyouforgetthis,thetransducerishoistedautomaticallybeforethesonarisswitched
off.Itisalsohoistedautomaticallyifaseriousmalfunctionoccurstothecommunication
betweenthebridgeandthehullunit.
Thetransducercanalsobeloweredtoanyselectedmiddleposition.Incaseofvoltage
failure,thetransducercanberaisedorloweredmanuallybymeansofahandcrank.
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