Zte ZXMW NR8120D - Instantaneous Link Break; The MU Loses Lock; Air Interface Performance Is Zero

Chapter2Troubleshooting
5.Verifythatthefeedersandfeederconnectorsareingoodcondition.
6.VerifythatthepolarizationoftheantennaandtheODUareinstalledproperly.
7.Verifythattheantennaazimuthdoesnotdeviatefromthedesignedazimuth.
8.Verifythatthereisnoobstacleintheradiolink.
2.2.4InstantaneousLinkBreak
Performthefollowingtroubleshootingsteps:
1.Verifythattheequipmentisoperatingproperly.
2.Usethenetworkmanagementsoftwareoralevelrecordertoverifythatthe
instantaneousbreakisduetosignalattenuation.Fordetailedinformation,referto
"1.3.1CheckingtheReceiveLevel".
3.Verifythattheconguredfrequencyintervaliswithintheallowedrangeandthereis
noexternalfrequencyinterference.Ifinterferenceexists,ndtheinterferencesource
frequencyandmodifytheequipmentfrequency.
4.Adjustthemountingheightoftheantenna.
2.2.5TheMULosesLock
Performthefollowingtroubleshootingsteps:
1.Checkincorrecthardwareinstallationandverifythattheequipmentandantenna
feedersareinstalledproperly.
2.Checklinkloopproblemduetoincorrectprotectioncongurationandmodifythe1+1
protectionmodeto1+0no-protectionmode.
3.Checklinklosinglockduetothatthereceivelevelislowerthanthethresholdvalueof
thehighmodulationmodeandsettheworkingmodeto7M/QPSK.
4.Checklogicorsoftwareproblemsandrestarttheequipment.
5.Checkfrequencyinterferenceandmodifythefrequencypointstoanotherpairof
frequencypoints.
2.2.6AirInterfacePerformanceIsZero
Performthefollowingtroubleshootingsteps:
1.Verifythattheweatherkeepsnormalandthereisnothunderstorm.
2.Verifythatthereisnoexternalinterference(co-channelinterference,andadjacent
channelinterference)inthisdurationandnoobstaclesonthetransmissionpath.
3.VerifythattheODUisproperlyconnectedtotheantenna.
4.Verifythatthecongurationiscorrect.Forexample,bothdirectionsofanantenna
mustbeinthesameLAGgrouporPLAgroup.
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SJ-20150804150350-006|2015-09-17(R1.0)ZTEProprietaryandCondential