User's Manual

Confidential&Proprietary116/122 SC‐DAS
NormalLDpowerlevelistypically+7dBm±1dBm,PDpowerisrangeof+1dBmto‐5dBm.Theresults
valueissametotheROU’sopticallosscompensation(seetheROUmoredetail)
Like the ROU, the OEU performs optical loss compensation automatically when the OEU
communicateswithupperODUfirst.
During optical compensation, the Result window shows "Processing" and then a result value is
displayed.Therearethreetypesofresultsasfollows:
1. Success:Theopticalcompensationisnormallymade.
2. OverOpticLoss:Generatedopticallossis5dBoormore.
3. CommunicationFail:CommunicationwithROUisinpoorconditin.
TheOEUcanbeinsertedwithtwoDOUs.TheDOU’sbehaviorisexactlysametotheODU(Seethe
ODUformoredetail)

 IfOEUdoesnotmakeopticalcompensation,therewillbeerrorsinthesystemlinkbudget.It
cancauselowoutputlevelsormakeSpuriousEmissionsdetrimentaltothesystem.