User's Manual

13 | P a ge











(RelayShowninNon‐AlarmCondition)



VARIABLESTEPATTENUATOR

BDAgaincanbereducedbyupto30dBin2dBstepsusingthevariable stepattenuator.Gain
adjustmentismadewithrotaryswitchesaccessibleviatheaccessdooroftheBDAenclosure.
Arrowson theshafts of theseswitches point tothe value  of attenuation selected.BDA gain
can be determined by subtractingthe attenuation value fromthe gain reportedonthe BDA
Test Data Sheet for that side of the unit. The attenuators are labeled for Uplink and
Downlink.(Figure3a)






ConditionsforDCBackupAlarm
ThealarmmonitorstheACpower.IftheACpower
failsandDCisconnected,theDCAlarmLEDwill
indicateDCpowerisdrawn.