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 Help Hot Line (U.S. only): 1-800-530-9960 6-13
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PRELIMINARY Installing Expansion Hubs
6.4.2 Installing Expansion Hubs
The Expansion Hub (2U high) can mount in a standard 19 in. (483 mm) equipment
rack or in a wall-mountable equipment rack that is available from LGC Wireless.
Allow clearance of 76 mm (3 in.) front and rear and 51 mm (2 in.) sides for air circu-
lation.
Install the Expansion Hub in a horizontal position only.
CAUTION: Install Expansion Hubs in indoor locations only.
Installing an Expansion Hub in a Rack
Consideration:
• The Expansion 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.
• If you want to move the mounting brackets to a mid-mounting position, see Install-
ing an Expansion Hub in a Wall-Mounted Rack on page 6-14.
To install the hub in a rack:
1. Insert spring nuts into the rack where needed or use existing threaded holes.
2. Place the Expansion 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.