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
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PRELIMINARY Installing a Main Hub
6.4.3 Installing a Main Hub
CAUTION: Install Main Hubs in indoor locations only.
Installing a Main Hub in a Rack
The Main Hub (1U high) mounts in a standard 19 in. (483 mm) equipment rack.
Allow clearance of 76 mm (3 in.) front and rear, and 51 mm (2 in.) on both sides for
air circulation.
Consideration:
• The Main Hub is shipped with #10-32 mounting screws. Another common rack
thread is #12-24. Confirm that the mounting screws match the rack’s threads.
To install the hub in a rack:
1. Insert spring nuts into rack where needed or use existing threaded holes.
2. Place the Main Hub into the rack from the front.
3. Align the flange holes with the spring nuts installed in Step 1.
4. Insert the mounting screws in the appropriate positions in the rack.
5. Tighten the mounting screws.
NOTE: Do not turn on the Main Hub until you’ve started the AdminMan-
ager software (see Section 6.5 on page 6-21).
Rack-mounting Option
You can flip the rack mounting brackets, as shown in the following figure, so the hub
can be mounted 76 mm (3 in.) forward in the rack.
Installing an Optional Cable Manager in the Rack
• Using the screws provided, fasten the cable manager to the rack, immediately
above or below the Main Hub.