Installation manual
SimradES70
Figure5GeneralPurposeTransceiver(GPT)
TheGeneralPurposeTransceiver(GPT)isasmallself-containedunitcontainingits
ownpowersupply.Itoperateson+12Vdcor115-230V ac.Theunitcaninprinciplebe
mountedanywhereonboardtheship,providedthatthelocationisdryandventilated.
Makesurethatamplespaceisprovidedinfrontoftheunittoallowformaintenanceand
partsreplacements.Powercableandmountingbracketsareenclosed.Werecommend
thattheGPTismountedasclosetothetransducer(s)aspossible.
AnEthernetlinkconnectstheGeneralPurposeTransceivertotheProcessorUnit
(computer).ThislinkmaycompriseastandardEthernetcableand-ifnecessary-an
Ethernetswitch.ThetransceiverincludesitsownEthernetinterface.Anetworkinterface
boardmustbettedtothecomputer.
AsinglefrequencyGeneralPurposeTransceiveracceptsoneechosoundertransducer,
whileadualfrequencytransceiveracceptstwotransducers.
TheGeneralPurposeTransceiverisavailableinsinglebeamandsplitbeam
congurations.Adualfrequencysinglebeamcongurationisalsoprovided.The
possibleoperatingfrequenciesarelistedinthetechnicalspecications.Typical
congurationsinclude:
•GPT-S38(4)-F(singlebeam38kHz,4kW)
•GPT-S50(4)-F(singlebeam50kHz,4kW)
•GPT-S70(1)-F(singlebeam70kHz,1kW)
•GPT-S120(1)-F(singlebeam120kHz,1kW)
•GPT-S200(1)-F(singlebeam200kHz,1kW)
•GPT-Q38(4)-F(quad(split)beam38kHz,4kW)
•GPT-Q120(4)-F(quad(split)beam120kHz,4kW)
•GPT-S38(1)/S50(1)-F(singlebeam38and50kHz,1+1kW)
TwoormoreGeneralPurposeTransceiverscanexistonthesameEthernetcable.A
multi-frequencysounderemergessimplybyusingseveraltransceiversontheEthernet
cable.
Example:Adualfrequencysplit-beamsounderemergesbyconnectingtwosplit-beam
transceiverstotheEthernetcable.
Example:Atriplefrequencysingle-beamsounderemergesbyconnectingthree
single-beamtransceiverstotheEthernetcable.
Notethatforcertainoperationalfrequencies,theGeneralPurposeTransceiversissetup
usinganexternalpowersupply.
20
343522/A