Zte ZXMW NR8250 - 134239929 Baseband Alarm

Chapter2Alarm
lAlarmInformation:ThealarmisreportediftheIFisunlockedduetoabnormalexternal
clockoftheIFunitorinternalhardwarefault.
lAlarmLevel:Critical
lAlarmType:CommunicationsAlarm
Sub-codeDescription
None
EffectontheSystem
1.Innon-protectionmode,trafcisinterrupted.
2.Inprotectionmode:
lTrafcisinterruptedifbothactiveandstandbyRMUsareunlocked.
lSwitchoverisperformediftheactiveRMUisunlocked.
PossibleCauses
1.TheIFisunlocked.
2.TheIFcircuitisfaulty.
HandlingProcedure
lForshort-timeunlocking:
1.Detectthealarmandcheckwhetherthedeviceisoperatingnormally.
2.Usethesoftwaremanagementsoftwareorlevelrecordertocheckwhetherthe
faultiscausedbyattenuation.ChecktheODUreceivinglevel.
3.Checkifinterferenceexists.Ifyes,ndoutthefrequencyoftheinterference
sourceandchangethedevicefrequency.
4.Adjusttheantennaheight.
lForlong-timeunlocking:
1.CheckwhethertheODUfrequenciesatbothendsmatcheachother.
2.Checkwhetherthecongurationsofbandwidthandmodulationmodeare
consistentatbothends.
3.CheckwhethertheIFoutputinterfaceoftheODUunithasratedDCvoltage.If
yes,itindicatesthattheIDUisoperatingnormally.Ifno,replacetheIDU.
4.Checkwhetherthefeederandfeederconnectorareingoodcondition.
5.CheckwhethertheantennaandODUinstallationpolarizationarecorrect.
6.Checkwhethertheantennaazimuthdeviatesfromthedesignedvalue.
7.Checkwhetherthelinkisblocked.
2.2.28134239929Basebandalarm
AlarmProperty
lAlarmCode:134239929
lAlarmInformation:ItisthealarmdetectedintheModem.
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SJ-20111008094748-008|2012–05–30(R1.1)ZTEProprietaryandCondential