User's Manual

Confidential&Proprietary64/122 SC‐DAS
ports.


Figure5.5–BTS/BIUconnections

Usingaspectrumanalyzerorpowermeter,youneedtochecksignalssentfromBTSTX.Ifthesignals
exceedinputrange(‐20dBm~+10dBm),youcanconnectanattenuatorbetweentheBTSandBIUto
bringthesignallevelintorange.

BIUinterfacewithBi‐DirectionalAmplifier

SincetheBIUisSimplexformat;youneedtoun‐duplextheBDAsignaltoproperlyconnectittothe
BIU.
Usingeitherduplexeroracirculator,youcanseparateTX/RXsignalscomingfromtheBDA

Figure5.6–BDAInterfaceusingCirculator