User's Manual

Confidential&Proprietary99/122 SC‐DAS
UHF 24dBm‐10*LOG(N) 1
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CheckifthelevelofTXINPOWERisthesameasthevaluemeasuredwithspectrumanalyzer(Within
±3dB). Use TX IN AGC function and automatically set internal ATT depending on input level. ATT is
automaticallysetbasedon‐20dBmofinput.ThetablebelowshowsTXINATTdependingonTX IN
POWER.Formanualsetting,youcansetATTdependingoninputaccordingtothetable.
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TXINPOWER TXINATT TXINPOWER TXINATT TXINPOWER TXINATT
‐20dBm 0dB ‐9dBm 11dB +1dBm 21dB
‐19dBm 1dB ‐8dBm 12dB +2dBm 22dB
‐18dBm 2dB ‐7dBm 13dB +3dBm 23dB
‐17dBm 3dB ‐6dBm 14dB +4dBm 24dB
‐16dBm 4dB ‐5dBm 15dB +5dBm 25dB
‐15dBm 5dB ‐4dBm 16dB +6dBm 26dB
‐14dBm 6dB ‐3dBm 17dB +7dBm 27dB
‐13dBm 7dB ‐2dBm 18dB +8dBm 28dB
‐12dBm 8dB ‐1dBm 19dB +9dBm 29dB
‐11dBm 9dB 0dBm 20dB +10dBm 30dB
‐10dBm 10dB 
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TheMDBUcards intheBIUprovideALC(AutoLevelControl)functionalityforeachoftheinputsto
limit the maximum power output per carrier input. The input level starts activating ALC at‐20dBm
when turning the ALC on.For correct parameter settings, first, perform the input AGC and then
turntheALCfunctionon.
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Edit the port name and set it as a desired character string (up to 12 characters).For example, the
figurebelowshowsascreenwhenyouset“VzW”forport1and“AT&T”forport2.