User's Manual
Table Of Contents
- SECTION 1 General Information
- SECTION 2 InterReach Fusion System Description
- SECTION 3 Fusion Main Hub
- SECTION 4 Fusion Expansion Hub
- SECTION 5 Remote Access Unit
- SECTION 6 Designing a Fusion Solution
- 6.1 Overview
- 6.2 Downlink RSSI Design Goal
- 6.3 Maximum Output Power per Carrier
- 6.3.2 700 MHz (Upper C)
- 6.4 System Gain
- 6.5 Estimating RF Coverage
- 6.6 Link Budget Analysis
- 6.6.1 Elements of a Link Budget for Narrowband Standards
- 6.7 Optical Power Budget
- 6.8 Connecting a Main Hub to a Base Station
- 6.8.1 Uplink Attenuation
- 6.8.2 RAU Attenuation and ALC
- SECTION 7 Installing Fusion
- 7.1 Installation Requirements
- 7.1.2 Cable and Connector Requirements
- 7.1.3 Distance Requirements
- 7.2 Safety Precautions
- 7.2.1 Installation Guidelines
- 7.2.2 General Safety Precautions
- 7.2.3 Fiber Port Safety Precautions
- 7.3 Preparing for System Installation
- 7.3.1 Pre-Installation Inspection
- 7.3.2 Installation Checklist
- 7.3.3 Tools and Materials Required
- 7.3.4 Optional Accessories
- 7.4 Fusion Installation Procedures
- 7.4.1 Installing a Fusion Main Hub
- 7.4.3 Installing RAUs
- 7.4.4 Configuring the System
- 7.5 Splicing Fiber Optic Cable
- 7.6 Interfacing the Fusion Main Hub to an RF Source
- 7.6.1 Connecting a Single Fusion Main Hub to an RF Source
- 7.7 Connecting Contact Alarms to a Fusion System
- 7.8 Alarm Monitoring Connectivity Options
- 7.8.1 Direct Connection
- 7.8.5 Ethernet RF Modem
- SECTION 8 Replacing Fusion Components
- SECTION 9 Maintenance, Troubleshooting, and Technical Assistance
- APPENDIX A Cables and Connectors
- APPENDIX B Compliance
- APPENDIX C Faults, Warnings, Status Tables for Fusion, Fusion Wideband, Fusion SingleStar
InterReach Fusion Installation, Operation, and Reference Manual 4-1
D-620610-0-20 Rev F CONFIDENTIAL
SECTION 4 Fusion Expansion Hub
This section contains the following subsections:
• Section 4.1 Expansion Hub Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-1
• Section 4.2 Expansion Hub Front Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-3
• Section 4.3 Expansion Hub Rear Panel . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4-7
• Section 4.4 Faults, Warnings, and Status Messages . . . . . . . . . . . . . . . . . . . 4-9
• Section 4.5 Expansion Hub Specifications . . . . . . . . . . . . . . . . . . . . . . . . . 4-10
4.1 Expansion Hub Overview
The Expansion Hub acts an interface between the Main Hub and the Remote Access
Unit(s) by converting optical signals to electrical signals and vice versa, as shown in
Figure 4-1. It also supplies control signals and DC power to operate the Remote
Access Unit(s) as well as passing status information from the RAUs to the Main Hub.
Figure 4-1 Expansion Hub in a Fusion System
Fusion Expansion Hub
Fusion Main Hub
RAU
Downlink Path: The Expansion Hub receives downlink (Band1, 2, and 3) optical signals from the Main Hub using fiber
optic cable. It converts the signals to electrical and sends them to up to eight Remote Access Units (RAUs) using CATV
cables. The Expansion Hub also receives configuration information from the Main Hub using the fiber optic cable and
relays it to the RAUs using CATV cable.
Uplink Path: The Expansion Hub receives uplink (Band1, 2, and 3) IF signals from up to eight RAUs using CATV cables. It
converts the signals to optical and sends them to a Main Hub using fiber optic cable.
The Expansion Hub also receives RAU status information using CATV cable and sends it and its own status information to
the Main Hub using the fiber optic cable.
Downlink to Expansion Hub
Uplink from Expansion Hub
Downlink from Expansion Hub
Uplink to Expansion Hub