Installation Guide

functionality, specifically on-demand reads, adaptive channel planning, list management, and
endpoint type exclusion, are affected if the database server cannot initiate communication to the
collector.
Caution: If you use Ethernet as the communications backhaul, the collector must be
identified as Ethernet-based when performing the initialcollector configuration. Failure
to identify the collector as Ethernet-based prohibits the collector from communicating
with the Network CollectionEngine.
Remote 915 MHz Antenna Placement
Antenna placement is one of the most important factors in determining your overall system
performance. Careful consideration must be given to proper antenna placement. Follow the
general guidelines below when determining the ideal location for a remote-mounted 915 MHz
antenna.
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Mount the antenna vertically.
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Mount the antenna in a location where there is a clear, unobstructed, 360-degree view of the
horizon. The antenna receives and transmits in all directions. Objects like building walls,
nearby metal surfaces, or other obstructions will interfere with the proper operation of the
antenna.
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Do not mount the antenna on a rooftop where nearby buildings are higher than the
installation location.
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Do not mount the antenna near existing RF radiating antennas. If existing RF radiators are
nearby, the horizontal separation distance to the radiator must be a minimum of 100 feet
and/or 10 feet of vertical separation. In instances where nearby RF radiators are present,
conduct an intermodulation interference study to evaluate the potential for interference and
any effects it may have on system performance. Consult your Itron systems engineer for
more information.
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Height is preferred for optimal performance. Itron recommends you install the antenna no
higher than 100 feet. If the antenna is going to be more than 100 feet above the collector,
Itron recommends using a Tower CCU 100.
A side arm antenna installation must be done if the 915 MHz antenna is mounted where it does
not have an unobstructed 360-degree view. Refer to the following guidelines for a side arm
antenna installation.
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For the 915 MHz antenna the minimum standoff distance is 24 inches, where the interfering
structural members are four inches or less in diameter and spaced more than eight feet
apart.
CCU100 and Repeater100 Installation Guide 3 Planning a CCU/Repeater Installation
12 February 2021 815-0491-00 Itron, Inc. Page 24 of 133