User's Manual

Product Overview
InterReach Spectrum Remote Access Unit Installation Guide Page 5
ADCP-77-168 • Issue 2 • 07/2011 © 2011 ADC Telecommunications, Inc.
Main Remote Access Units
The Main Remote Access Unit (MRAU) receives FWD IF signals from an IF
Expansion Unit (IFEU), which is part of the Spectrum Expansion Module Group,
using 75
 CATV cable. The MRAU converts the IF signals to RF and sends them to
a passive RF antenna using 50
 coaxial cable. The MRAU also receives
configuration information and power from and sends its status information to the
IFEU.
The MRAU receives REV RF signals from a passive RF antenna using 50 coaxial
cable. It converts the signals to IF and sends them to the IFEU using 75
 CATV
cable.
MRAU Ports, Cable, and Connectors
Ref # Component Device Function
1
RF SubMiniature version A
(SMA) cable
(1)
50 RF SMA-to-SMA cable
Connects two RF bands together when there is only one
N-type connector on the RAU.
For cases when there is an N-type connector for each RF
band (700MIMO or PCS/AWS), there will not be an SMA
cable.
2 Antenna port 50 N-type connector Connects to an antenna.
3 FWD IF IN connector F connector port
Connects to the IFEU FWD Module IF OUT connector via
CATV cable.
4 FWD SECONDARY PORTS (1 - 3) F connector ports
Connect to a SRAU SECONDARY FWD connector via
CATV cable.
5 REV SECONDARY PORTS (1 - 3) F connector ports
Connect to a SRAU SECONDARY REV connector via
CATV cable.
8 REV IF OUT connector F connector port
Connects to the IFEU REV Module IF IN connector via
CATV cable.
(1) The AWS/PCS MRAUs does NOT have an RF SMA cable, and has two Antenna ports.
REV IF OUT REV SECONDARY PORTS
1 2 3
FWD SECONDARY PORTS
1 2 3
FWD IF IN
LINK STATUS
1 2
36
5
4