Zte ZXSDR R8860E GU858 - Page 28

ZXSDRR8860EGU858UserManual
2.PA
AmplifydownlinkRFsignalinputbyADTR,andoutputittoDFL;
ProvidedigitalpredistortionfeedbacksignalforADTR;
Providepoweramplicationoutputcontrol;
FeedbackforwardpowercouplingsignaltoADTR,andADTRdoforwardpower
inspection;
FeedbackbackwardpowercouplingsignaltoADTR,andADTRdobackwardpower
(SWR)inspection;
ProvidePAinternaltemperaturedatatoADTRandADTRwilldotemperature
inspection.
3.DFL
Combinationandseparationofreceivingandtransmittingsignal;
Filterfunctionofreceiving&transmittingsignal;
Low-noiseamplicationfunction;
ProvideDFLalarminspectionfunction.
4.RIE
AccessfollowingthesesignalsfromPIBboard:Ethernetsignal,485drycontact,LED
indicator,singleboardresetsignal,jumper,buttonsignal,digitalground;
Transmittheaccesssignalbythesocketandnishthefunctionofinterfaceconversion.
5.PIB
AccessfollowingthesesignalsfromADTRboard:Ethernetsignal,LEDindicator,
singleboardresetsignal,jumper,buttonsignal,digitalground,power,groundand
458signalofelectricallytunedantenna;
Power,ground,and458signalofelectricallytunedantenna,outputtoelectricallytuned
antennabysocket;othersignalsareintroducedtooutsidebytestsocket,tododebug
anduseasindicativesignal;
FinishAISGinterfacepowerlteringand485lighteningprotection;
Finishinterferenceprotectionforindicators,resetsignals,buttons,andjumpers.
6.RPDC
FinishpowerconversionfromDCtoDC,andprovidepowersupplyfunction;
Inspectinputovervoltageorundervoltage,inputpowerdisconnection,output
overvoltageorundervoltage,outputover-currentalarm,andreportittoADTRboard.
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SJ-20101210110401-001|2010-12-06ZTEProprietaryandCondential