User's Manual

Confidential&Proprietary65/115 SC‐DAS
ports.
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Figure5.5–BTS/BIUconnections
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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.
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BIUinterfacewithBi‐DirectionalAmplifier
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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
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Figure5.6–BDAInterfaceusingCirculator