ZXSDRR8882ProductDescription
lProcessesclocksignals.
lProvidesLEDindication.
lProvidesexternalmonitoringinterfaces.
lSupportslocalorremotemonitoring.
PAD
lAmpliesdownlinkradiosignalsreceivedfromtheTRM,andoutputstheamplied
signalstotheFLD.
lAmpliesfoursignalsreceivedfromtheFLDthroughtheLNA,andthensendsthe
ampliedsignalstotheTRM.
lProvidesapre-distortionfeedbackinterfacefortheTRM.
lProvidesaninterfacetotheTRMforVoltageStandingWaveRatio(VSWR)detection
(forwardpowerdetection).
lSupportsseparateswitch-off.
lSupportsinner-moduletemperaturedetection.
FLD
lTransmitsandreceivesuplinkanddownlinksignalsinduplexmode.
lSuppressesspuriousemissiononthedownlinktogetacceptableout-bandTx
spuriousemissionrequiredbythesystemandrelatedprotocol.
lSuppressesinterferencesignalsontheuplinktoachieveasatisednoisecoefcient.
EPB
lProvideslightningprotectionfor-48Vpowersupply.
lProvides-48Vpowerlter.
lProtectsAISGsignals(AISGpower,half-duplex485signal).
lPerformsdrycontactprotection.
lProtectstheRS485monitoringsignals.
lProvidesadaptationforexternalMONinterface,AISGinterface,andpowerinterface.
2.2SoftwareSubsystem
Figure2-2showsthesoftwaresubsystemoftheZXSDRR8882.
2-2
SJ-20150104112914-001|2015-01-04(R1.0)ZTEProprietaryandCondential