Simrad TRANSDUCER - INSTALLATION GENERIC REV H Manuale di Installazione Pagina 17

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SimradMS70
Themaincomponentsinthetransceiverare:
3eaTRXUTransceiversubracks
6eaTRCBeamformingcomputers
1eaEthernetswitch
Cabinetfanunit
PowerSupplyUnit
TheSimradMS70comprisesthreePowerSupplyUnits.EachunitprovidesACandDC
powertooneofthethreetransceiverracksinthetransceiver.Externalanaloguepower
supplieshavebeenchosentoensureminimumelectricnoise.
InordertoreducethevoltagedropinthepowercablesbetweeneachPowerSupplyUnit
andtheTransceiverUnit,thesecablesmustbekeptasshortaspossible.Thecablesmust
alsoberuninsteelconduitstominimizeelectricnoise.
ThemainactivecomponentsineachPowerSupplyUnitare:
OneInternetPowerSwitch
Onepowersupply,6Vdc
Onepowersupply,12Vdc
Onepowersupply,75Vdc
Transducer
Figure3TheSimradMS70
transducer
TheMS70Transducerisplane,andconsistsofa
ceramic-polymercompositematrix.
Thematchingtransformerforeachtransducer
elementislocatedinthetransducer,thisallowsalow
impedanceconnectiontotheTransceiverUnit.The
arrayisconnectedtotherearsideofthethreeTRXU
Transceiversubracksusing25cables.
UninterruptedPowerSupply(UPS)
InordertoensurecontinuousoperationoftheSimrad
MS70independentofvaryingqualityofthevessel’s
mainssupply,theuseofuninterruptedpowersupplies
(UPS)isimportant.
AUPSsystemm
u s t bettedtosupplytotheTRCcomputersintheTransceiverUnit.
AUPSsystemiss
t r o n g l y r e c o m m e n d e d topowertheMultibeamOperatorStationand
thePowerSupplyUnits.
Normally,twoUPSunitsareused:
OneisusedtopowertheMultibeamOperatorStationandotherrelevantunits.
331549/B
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