User's Manual

Install the RAUs and Antennas
Page 12 InterReach Spectrum Remote Access Unit Installation Guide - Preliminary Update for Issue 3
© 2012 TE Connectivity Ltd. ADCP-77-168 • Issue 3 • May 2012
Do the following, in the order presented, to mount the RAUs and antennas:
1 Mount
all MRAU and SRAUs in the locations marked on the floor plans.
2 Install the
passive antennas according to the manufacturer’s installation
instructions.
NOTE: It is common practice to install passive antennas below the ceiling. If you install a passive antenna
above the ceiling, when estimating the antenna coverage area, account for additional loss due to
the ceiling material.
3 Connect a passive multi-band antenna to the N connector on each RAU using
coaxial cable with the least amount of loss possible. (See “Appendix C: Omni
Antenna” on page 23 for information on the Omni Antenna ports.)
Omni Antenna
False Ceiling
SRAU
N1
REV IF OUT REV SECONDARY PORTS
1 2 3
FWD SECONDARY PORTS
1 2 3
FWD IF IN
LINK STATUS
LINK STATUS
SECONDARY
REV
SECONDARY
FWD
MRAU
N1
Coaxial cable
Coaxial cable
CAUTION! Firmly hand-tighten the N connector. DO NOT over-tighten the connector.
Connect the IFEU to the MRAU
NOTE: The IFEU should be powered up before starting this procedure; see the InterReach Spectrum
Expansion Module Group Installation Guide (ADCP-77-167).
4 Follow these rules for the CATV cables when connecting the IFEU to the MRAU:
• The FW
D and REV cables should be close to the same length.
• The FWD and REV cables should be the same cable typ
e (both RG6 or both
RG11).
• A pair
of CATV cables connects each MRAU to the IFEU. The IFEU REV
Module IF IN port and the IFEU FWD Module IF OUT port must match. For
example, if IFEU REV Module IF IN Port 3 is used, use IFEU FWD Module IF
OUT Port 3.
• Refer to “Appendix B: 75-Ohm CATV Cable” on page 18 for information on
maximum RG-6 or RG-11 CATV cable lengths.
5 Test
the cable termination for each CATV cable before installing it.