User's Manual

Confidential&Proprietary106/115 SC‐DAS

6.3 OEUOperation
ThefigurebelowshowsthesystemlinklevelofSC‐DAS(BIU‐ODU‐OEU‐ROU).Thissectiondescribes
OEU‐related information. The OEU receives various signals through optical modules. The optical
signals are converted to RF signals and the RF signal are amplified to moderate signal levels. To
transmittoROU,
thesignalisconvertedtoanopticalsignal


Figure6.16–SC‐DASLinkBudgetforOEU

6.3.1 OEUOperation
TheOEUcomesasarackmountchassisandislocatedataremoteclosetinabuilding.
TheOEUsmainfunctionistoactasahubforexpansiontootherbuildings,Itonlyrequires
one strand of fiber to expand to 8 ROUs.( OEU supports up to 2 DOUs
 and the DOU
supportsupto4opticalportsthatconnectROUs).
TheROUcanworkwithaDCFeederandanOpticCableFeeder.oftheOEUrequiresaDC‐
DCpowersupply.
In the other direction, the OEU can be connected with a ODU. It has optical loss
compensation function for 5dBo of optical cable loss. The following shows operational
proceduresafterinstallationoftheOEU.


CheckingthestatusofOEU'sLEDIndicator