User's Manual

Standards Certification
InterReach Spectrum Remote Access Unit Installation Guide - Preliminary Update for Issue 3 Page 5
ADCP-77-168 • Issue 3 • December 2011 © 2012 TE Connectivity Ltd.
PRODUCTOVERVIEW
InterReachSpectrumsupportsuptoeightfrequencybandsinasinglesystem.Eachantenna
locationsupportsthosebandsinmodular,grouppairings.EachlocationincludesaMainRemote
AccessUnit(MRAU),whichcanpoweruptothreeadditionalSecondaryRemoteAccessUnits
(SRAUs).AnMRAUsupportstwofrequencybands,andeachSRAUcansupportuptotwo
frequencybands,foratotalofuptoeightfrequencybands.MRAUsandSRAUsaregrouped
logically,basedoncommonserviceprovidergroupingsandinclude,asanexample:
• 85
0/1900
• 70
0/700MIMO
• 80
0/900SMR
• 19
00/AWS.
Toaddmorefrequencybands,youconnectanSRAUtotheexisting
MRAU.Figure1illustrates
howRFandIFsignalsaresentbetween
Spectrumunitsandmodules.
Omni Antenna
Host
Power Supply
IF Expansion Unit
DART Remote Unit
Expansion Module Group
Secondary Remote Access Unit
Main Remote Access Unit
IF
RF
RF
IF
Reverse (REV)
Forward (FWD)
Key to Signal Path
RF
IF
Figure1.REV and FWD Signals for the RAU
NOTE: ThisbookreferstotheOmniAntenna(4214‐M727),whichistheantennathatTEConnectivity
recommends.Otherantennasmaybeused.ForfurtherinformationontheOmniAntenna,see
“AppendixC:OmniAntenna”onpage24.