Itron Inc. CCU100T Manual Do Utilizador
Chapter 2 Planning a CCU/Repeater Installation
8
CCU 100 and Repeater 100 Installation Guide
Proprietary and Confidential
Siting CCUs/Repeaters
CCUs/Repeaters are installed in the field on a variety of surfaces, such as wooden or metal
walls, metal pipes, fence railing, and utility poles.
walls, metal pipes, fence railing, and utility poles.
When determining where to place the CCU/Repeater, there are four primary considerations:
• Siting for optimum RF reception.
• Siting for optimum GPS and/or WAN reception.
• Availability of Ethernet connection (if required).
• Availability of power connection.
• Availability of a structure or location that can physically support the CCU/Repeater
• Siting for optimum GPS and/or WAN reception.
• Availability of Ethernet connection (if required).
• Availability of power connection.
• Availability of a structure or location that can physically support the CCU/Repeater
and its mounting hardware.
Caution Always ensure that you have permission to install a CCU/Repeater at
your chosen site prior to beginning installation.
your chosen site prior to beginning installation.
Propagation Study and CCU/Repeater Site Selection
Prior to installing a CCU/Repeater in the field, consult with Itron to perform a propagation
study. This study:
study. This study:
• Evaluates the quantity and types of endpoints in the network.
• Assesses environmental and geographical considerations related to CCU/Repeater
• Assesses environmental and geographical considerations related to CCU/Repeater
installation.
• Optimizes CCU/Repeater placement in the network for the best possible reception.
• Helps influence the physical and structural implications of mounting a CCU/Repeater
• Helps influence the physical and structural implications of mounting a CCU/Repeater
to a given surface.
Once the propagation study is complete, you can determine exactly where to install
CCUs/Repeaters and what they will be mounted to.
CCUs/Repeaters and what they will be mounted to.
GPS and WAN Coverage
CCUs/Repeaters must be installed in locations where a GPS signal is strong and consistent.
If WAN is being used as the communications backhaul for the network, a strong and
consistent WAN signal is required as well (for CCUs only). If the signal is too weak, or its
availability fluctuates, the CCU/Repeater can not gather accurate date/time information or
communicate with the Fixed Network software.
If WAN is being used as the communications backhaul for the network, a strong and
consistent WAN signal is required as well (for CCUs only). If the signal is too weak, or its
availability fluctuates, the CCU/Repeater can not gather accurate date/time information or
communicate with the Fixed Network software.
Itron recommends using a handheld GPS unit to verify that your CCU/Repeater or remote
GPS antenna mounting location can receive a signal from at least three satellites.
GPS antenna mounting location can receive a signal from at least three satellites.
If you are using a GPRS WAN backhaul, Itron recommends testing the CCU or remote
GPRS antenna at your desired installation to ensure that GPRS service is available at that
location.
GPRS antenna at your desired installation to ensure that GPRS service is available at that
location.