User's Manual
Table Of Contents
- SECTION 1 General Information
- SECTION 2 InterReach™ Unison System Description
- SECTION 3 Unison Main Hub
- SECTION 4 Unison Expansion Hub
- SECTION 5 Unison Remote Access Unit
- SECTION 6 Installing Unison Components
- 6.1 Installation Requirements
- 6.2 Safety Precautions
- 6.3 Preparing for System Installation
- 6.4 Unison Component Installation Procedures
- 6.5 Starting and Configuring the System
- 6.6 Interfacing a Main Hub to a Base Station or Roof-top Antenna
- 6.7 Connecting Contact Alarms to a Unison System
- SECTION 7 Installing and Using the AdminManager Software
- SECTION 8 Designing a Unison Solution
- 8.1 Maximum Output Power per Carrier at RAU
- 8.2 Estimating RF Coverage
- 8.3 System Gain
- 8.4 Link Budget Analysis
- 8.4.1 Elements of a Link Budget for Narrowband Standards
- 8.4.2 Narrowband Link Budget Analysis for a Microcell Application
- 8.4.3 Elements of a Link Budget for CDMA Standards
- 8.4.4 Spread Spectrum Link Budget Analysis for a Microcell Application
- 8.4.5 Considerations for Re-Radiation (over-the-air) Systems
- 8.5 Optical Power Budget
- 8.6 Connecting a Main Hub to a Base Station
- 8.7 Designing for a Neutral Host System
- SECTION 9 Replacing Unison Components in an Operating System
- SECTION 10 Maintenance, Troubleshooting, and Technical Assistance
- APPENDIX A Cables and Connectors
- APPENDIX B Compliance
- APPENDIX C Glossary
PN 8700-10 InterReach Unison User Guide and Reference Manual 5-1
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PRELIMINARY
SECTION 5
Unison Remote Access Unit
The Remote Access Unit (RAU) is an active transceiver that connects to an Expan-
sion Hub using industry-standard Cat-5/6 ScTP cable. The cable also delivers electri-
cal power to the RAU.
An RAU passes RF signals between an Expansion Hub and an attached passive
antenna where the signals are transmitted to wireless devices.
Figure 5-1 Remote Access Unit in a Unison System
Unison Expansion Hub
RAU
Downlink Path: The RAU receives downlink IF signals from an Expansion Hub via Cat-5/6 cable. It converts the signals to
RF and sends them to a passive RF antenna via coaxial cable.
Also, the RAU receives configuration information from the Main Hub via the Cat-5/6 cable.
Uplink Path: The RAU receives uplink RF signals from a passive RF antenna via coaxial cable. It converts the signals to IF
and sends them to an Expansion Hub via Cat-5/6 cable.
Also, the RAU sends its status information to the Expansion Hub via the Cat-5/6 cable.
Downlink to RAU
Uplink from RAU
Unison Main Hub
Downlink to antenna
Uplink from antenna