User Manual

Introduction
2
Definitions
Thefollowingabbreviations,industrystandardlingoandacronymsareusedinthisdocument.
BGW BasestationGateway
BIU
Basestationinterface.AlsoknownastheDIU.ItistheelectricalinterfacebetweentheMaster
Unit(MU)andtheoperatorradiobasestationoranothersourcefortheradiosignals,suchasa
off‐airrepeater.
BTS SeeRBS.
DAS
Adistributedantennasystem.Severalantennasconnectedtogetherinacoaxialnetworksothat
severalantennascanbefedasignalfromacentrallocation.
DL See“Downlink”
Downlink Thesignalsthataretransmittedfromabasestationtowardsaterminal(phone).
Fiber
Inthisdocumentitreferstothetelecommunicationfibersusedtotransmitmodulatedlightas
pulsesoranaloguevariationsonaglassfiber.TheDeltaNodeFiber‐DASsystemshouldusesingle‐
modefiberalways.
Fiber‐DAS
Ageneralnamefordistributionsystemsusingradiofrequencyonfiber(RFonFiber)technology .
DASmeans“DistributedAntennaSystem”whichref erstothepracticeofbuilding“spr eading
nets”withcoaxialcables,splittersandantennastocoverlargerstructures.
FOI Fiber‐opticinterface.AlsoknownasDOI(DeltaNodeOpticalInterface)
FOR Fiber‐opticremoteinterface,partoftheRemoteUnitconnectingtothefiber.
GSM GlobalSystemforMobileCommunications
iDEN IntegratedDigitalEnhancedNetwork
LTE LongTer mEvolution
MU
MasterUnit.Thisisarackthatcontainsallthemodulesthatbuildsuptotheheadendinthe
system.ThisiswheretheradiobasestationsinterfacetotheFiber‐DASsystem.Thisisalsowhere
thedownlinksignalsfromthebasestationsareconvertedintolaserlightand
sentoverthefiber‐
opticstotheRemoteUnit(RU)andtheuplinksignalsfromtheRUareconvertedtoradio
frequencysignalsandtransmittedtotheradiobasestation(RBS,BTS).
POI Point of Interconnect,RF splitter/combiner unit
QMA TypeofRFConnector.QuickdisconnectversionofSMARFConnectors.SeeSMA
RBS
RadioBaseStation.Theinfrastructureunitnormallyconnectedtotheantennasintheradio
accessnetwork(RAN)andsometimescalledjustBaseSta tionorBaseTransceiverStation (BTS).
RGW Remot e Gateway Unit
RU
RemoteUnit.Thisistheunitclosesttotheantennathatconvertsthedownlinksignalfromthe
fibertoradiofrequenciesanddistributesitovertheantennasystem.Inthereverse,theuplink
radiofrequenciesareconvertedtomodulatedlaserlightandtransmittedbacktotheMasterUnit
(MU).
SC‐APC
ThetypeofconnectorusedforallDeltaNodeopticalequipment.Itisrecommendedthatall
connectorsbetweentheMUandtheRUareofthistype.SC‐APcanalsobeacceptedinpatch
panels.AllconnectorsMUSTBEANGLEDtoavoidsignalreflectionsthataredetrimentaltothe
signalquality.
Fibersneedtobeofsingle‐modetype.
Singlemode
fiber
Afiberwherethelightataspecifiedrangeofwavelengthsonlyhaveasinglepaththrough.Thisis
requiredforanaloguemodulatedsystemssuchastheDeltaNodeFiber‐DASsystem
SMA Sub‐miniatureversionA.ATypeofRFConnector.