Motorola GTR 8000 - Figure 2-6 Power Amplifier Module; Power Amplifier Input;Output Connections

2.1.2.1PowerAmplierInput/OutputConnections
Thepoweramplier(PA)isaforcedconvection-cooledRFpoweramplier.Itacceptsalow-levelmodulatedRF
signalfromthetransceivermodule,andampliesitfortransmissionthroughthesitetransmitantenna.Also,to
completetheCartesiancorrectionloop(linearizationmethod),itprovidesalowlevelRFfeedbacksignaltothe
transceivermoduletoachievetherequiredtransmitterlinearity.
TransmitpoweroutputcanbesetusingConguration/ServiceSoftware(CSS).See4.4.10ConguringTxPower
ValuesandBatteryType,page4-31.
Thepoweramplieralsoperformsfunctionsrelatedtothefanmodule,includingreportingofthefanmodulestatus
andsupplyingpowertothefanpowerbus.
Figure2-6PowerAmplierModule
Thepoweramplieriscomprisedofsixinternalmodules:
•CoreBoard
•ConverterBoard
•DriverAmplierBoard
•FinalAmplierBoard
•DistributionBoard
•OutputCircuitry
2.1.2.1PowerAmplierInput/OutputConnections
Therearethreeelectricalconnectionassembliesonthepoweramplier:
•RFoutput(frontQN"quick-N"connector)onfrontofpowerampliermodule
ThisiscabledtotheN-typefemalebulkheadconnectionattherearofthebaseradiohousing.
•DCpowersupply/controlsignal(backplaneconnection)
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