Chapter 2 Planning a CCU/Repeater Installation
If the antennas are mounted in an exposed outdoor environment, you must provide
lightning protection and proper grounding. For more information on lightning protection
and grounding, see Lightning Arrestor on page 12, Grounding the Remote/External
Antenna Systems on page 10, and the Motorola R-56 guidelines.
Antenna Sweep Test
After remote antenna installation, perform an antenna system sweep test and verify the
VSWR (voltage standing wave ratio) does not exceed 1.5:1. For more information, see
Performing an Antenna Sweep Test on page 72 and the Antenna Line Sweeps Procedure
on page 81.
Caution All coaxial cable used to connect an antenna to the collector or repeater
must be properly grounded at the top and bottom of the coaxial line. Additionally, any
cable lengths of 200 feet or greater must be grounded each 100 feet. For more
information, see Lightning Arrestor on page 12.
Antenna Connectors
Connectors for the 900 MHz and WAN antenna cables must be male type N connectors,
and must be sized according to the type of coaxial cable used. The GPS cable requires
TNC male and SMA male connectors. These connectors are available from a variety of
manufacturers.
Important All coaxial cable connections must be properly weather-proofed per
industry standards unless otherwise specified.
Mounting Hardware
Depending on your installation location and configuration, the installer must supply the
following mounting hardware to properly attach the collector or repeater to the mounting
surface.
Caution Since each installation is unique, you must ensure the mounting hardware
securely supports the collector or repeater. The collector or repeater (minus attachment
hardware) weighs 7 pounds. Itron recommends consulting with a qualified engineer to
verify load requirements and safety issues. Also, be sure to check and comply with
local codes when installing the collector or repeater.
Suggested hardware/sizing
Utility pole Wood or steel pole High-strength stainless steel straps.
Light pole Steel light pole High-strength stainless steel straps
Outdoor wall or pole with
remote 900 MHz antenna
Concrete, wood, or steel wall 1/4 inch-20 lag screws or 1/4 inch-20 molly bolts
Wood or steel pole High-strength stainless steel straps
Indoor wall or pole with remote
900 MHz antenna and external
GPS/WAN antennas
Concrete, wood, sheetrock, or
steel wall
1/4 inch-20 lag screws or 1/4 inch-20 molly bolts
Wood or steel pole High-strength stainless steel straps
16 TDC-0971-011 CCU 100 and Repeater 100 Installation Guide
Proprietary and Confidential
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