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
Maintenance, Troubleshooting, and Technical Assistance PRELIMINARY
10-8 InterReach Unison User Guide and Reference Manual
PN 8700-10
620003-0
10.2.2 Warning Indications
Warnings alert you to conditions that may impact system performance and conditions
that indicate potential system failure.
Before addressing warnings, ensure that all faults are resolved. Take appropriate
action to resolve the warnings, as indicated in the following tables.
Main Hub Warnings
Table 10-4 Main Hub Warnings
Warning Message Action Impact
Downlink laser is failing. Replace the Main Hub when possible. The downlink laser will eventually fail and
the system will be off-line.
Temperature is high. Check room environmental controls. Potential Main Hub failure.
Fan failure. Check the Main Hub fan for rotation, air
flow blockage, dust; replace the Main Hub
if temperature rises.
Temperature may rise to fault level result-
ing in Main Hub and connected Expansion
Hub(s) and RAU(s) being off-line.
Portn uplink fiber optical loss
greater than recommended maxi-
mum.
Check the uplink fiber cable for optical
loss.
Clean the cable connector.
Clean the fiber ports.
Degraded system performance.