User's Manual
Table Of Contents
- Before You Begin
- CCU/Repeater Basics
- Planning a CCU/Repeater Installation
- Installing the Collector or Repeater
- Installation Overview
- Attaching the Local GPS/WAN Antennas
- Attaching the Direct Mount Standard (5.15 dBi) 900 MHz Antenna
- Attaching the Collector or Repeater
- Connecting Cables
- Installing a Local 4G WAN Antenna
- Installing the Battery
- Providing Power
- CCU Installation Wiring Diagram
- Tower Installation
- Solar Powered Installation
- Relocating a CCU or Repeater
- Battery Care and Maintenance
- Detailed Collector or Repeater Specifications
- Port and Protocol Requirements
- Status and Diagnostics
- Changing the Repeater Password
- Antenna Line Sweeps Procedure
- Anritsu Site Master Calibration
- Testing on a Network Device with a Remotely-Mounted 900 MHz Antenna
- Understanding Party Responsibilities
- Itron ChoiceConnect Antenna and Line Sweep Test Form
- Itron ChoiceConnect 900 MHz Antenna Specifications
- Typical Coaxial Cable Specification Summary Table
- Sample Sweeps Output
- Grounding Specifications
- Understanding Grounding and Bonding
- Understanding the Ohms Level
- Reducing the Ohms level
- Using a Megger
- Adjusting the Routing of the Grounding Conductor
- Supplier General Requirements and Equipment Competencies
- Exterior Grounding System Design for Concentrators
- Equipment Buried Ground Ring
- Chemical Ground Rod Installation
- Itron Concentrator Equipment
- Installing Coax Ground Kits
- Collector Sites with Indoor Itron TCU / CCU Equipment
- Grounding Rooftop Network Devices
- Down Conductor Installation
- Cold Water Pipe Option
- Building Steel Option
- Antenna and Coax Grounding - Rooftops
- Cable Tray Grounding
- Water Tower Grounding
- New Wooden and Concrete Antenna Poles
- Equipment Shelter Grounding
- Repeaters on Communication Tower Sites
- Repeaters on Rooftops
- Multiple Story Site Ground System
- Down Conductors Installation - Building / Shelter Penetrations
- Down Conductors Installation - Limits of Bend Radius
- Down Conductors Installation Connection Methods
- Cable Entrance Facilities
- Clamp-On Ground Resistance Testing
- Understanding Party Responsibilities
- Understanding Grounding and Bonding
- Index
Chapter 4 Battery Care and Maintenance
56 TDC-0971-011 CCU 100 and Repeater 100 Installation Guide
Proprietary and Confidential
Battery Service Life
All batteries have a variable service life, depending upon the type of cycle, environment,
and charge to which the cell or battery is subjected during its life. There are two basic
types of service life: cycle life and calendar life. The battery in the collector or repeater is
called in to service only during power outages, so in this case only calendar (or float) life
is applicable.
Calendar Life
The design calendar (or float) life of the battery extends from eight to ten years at room
temperature (25°C/77°F) under proper charging conditions.
This design life was confirmed by the use of accelerated testing methods that are widely
accepted by both manufacturers and users of sealed-lead batteries. High temperatures are
used to accelerate the aging process of the battery under test.
The float life of a cell is cut in half for roughly every 8°C (14.4°F) rise in ambient
temperature. The example below shows the relationship between ambient temperature and
float life for batteries that have a float life of ten years at 25°C (77°F).
A ten year battery lasts for five years at 33°C (91.4°F) and only 2½ years at 41°C
(105.8°F).
Preventative Maintenance
Itron recommends a preventative maintenance cycle of a two-year replacement in extreme
environments (average temperatures greater than 110°F/44°C), or five years in non-
extreme environments (average temperatures less than 90°F/31°C).