User Manual

FiberDistributedAntennaSystem(FiberDAS)
9
Figure 4 BIU Interfaces
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Item Description
ThisisRFpat
hwheretheradiobasestation(RBS)isconnected(SMA)tothe
BIU.Donotexceedthepowerratinginthedownlinkfortheport.
Thisisatestpo
rt(SMA)fortheuplink.ItshowstheuplinksignalintheDL/UL
BTSport‐6dB.ThisportisreplacedbytheULportonanon‐duplexedversion
oftheBIU.
Thesear
etheoutputports(QMA)forthedownlinksignalsaftertheyhave
beentreate dintheBIUwithattenuatorsandfilters.
Uplinksignalsar
econnectedtotheBIUusingtheseports(QMA).TheBIUwill
amplifyand/orattenuatethesignalsasappropriate.
Usedfo
rexternalalarmmonitoring(futureupgrade).
TheLEDsin
dicatevariousstates,see Table5 .
DL/ULBT
S1/2
TPUL1/
2
DLOU
T1/2
ULIN1/
2
EXTERNALALAR
MS
ON/ALMLED