
SimradSH90
Thecomputerisbasedonacommercialdesign,butthesoftware
andhardwarehasbeenspeciedandassembledbySimradtosuit
theSH90requirements.
ThecomputerholdsaDVDplayerforusewithfuturesoftware
upgrades.
Figure2ProcessorUnit
Thepurposeofthiscomputeristoallowyoutocontrolthesonar.
Thecomputerservesseveralfunctions.
•Itcontrolstheoveralloperationofthesonarfunctions.
•Itprovidesthegraphicpresentationofthesonarmodesand
echoes.
•Itholdsthemenusystem.
•ItcommunicateswiththeOperatingPaneltoreadthebuttons
andtrackballmovements.
•Itperformstheadvancedsignalprocessingandbeamforming
requiredtopresenttheinformationonthedisplay.
•Itcommunicateswithperipheraldevicesandsensorsusing
seriallines.
•ItcommunicateswiththeTransceiverUnit.
OperatingPanelpowersupply
Asmallpowersupplyisimplementedtoprovidestand-bypower
totheOperatingPanel.Thepowersupplyisconnectedtothe
ProcessorUnit.
Sonarroomunits
TransceiverUnit
TheSH90TransceiverUnitislocatedinthesonarroom,closeto
theHullUnit.
Thetransceiverperformsthetransmissionandreceptioncontrol
ofthe480transmittersand480receiverchannels.16identical
transceiverboardsareused.Adedicatedpowersupplyis
providedtosupplytherequiredDCvoltagestothetransceiver.
OneEthernetcableisusedforcommunicationwiththeProcessor
323775/B
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