User Manual

SystemDescription
18
Remote Unit (RU)
Therearemanydifferentkindsofremoteunitswithawiderangeofgainandoutputpowertocatertomany
differentneeds.Alowandmediumpowerunitcanhouseupto4differentfrequencybandsinoneunit,thehigh
powerversionscanhandleupto2differentbandsinonesingleun
it.
Chassis types
Remoteun
its(RUs)areavailableinmainlytwodifferentchassis,asinglecompactchassisfor1‐2bandsandadual
chassisforupto4bands(
Figure11 ). Table12 showshowtheycanbeconfigured:
Table 12
Chassis type Low Medium High
Singlechassis 1‐2 1‐2 1
Dualcha
ssis 3‐4 3‐4 2
Chassis types
Itisalsopossibletohavecombinationsoftheabove.Forexampleitispossibletobuildadualchassiswith2medium
powerbandsand1highpowerbandinthesameremote.Eachsideofadualchassisisvirtuallyidenticaltoasingle
chassisremoteunit.Thisensuresun
paralleledflexibilitywhenbuildingmultipleoperator/multiplebandsolutions.
Adu
alchassismayhave1‐2opticalremoteunits(FOR).Thiswaytheycanbefedfromdifferentdirectionsfor
redundancy.
Figure 11
Single Chassis
Remote Unit
Dual Chassis
Remote Unit
Remote Unit Chassis Types
BecauseofthelargerpoweramplifiersusedforhighpowerRU’stheneedformorecoolingandroomallowsonly2
bandsinthesamedoublechassis.Remotescanalsobedaisy‐chainedbywayofRFcables,meaninguptotwo
chassiscansharethesamefiber‐opticalinterfaceprovidingupto8b
andsinasinglelocation.
Table13 containsalistofthemostcommonremoteunitsthatareusedwiththeDeltaNodeFiber‐DASsystem.
Variantsar
eavailableuponrequest.