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 10-3
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PRELIMINARY Fault Indications
10.2.1 Fault Indications
Once all of the units are powered on and the cable connections are made, the faults
from each unit can be requested using the AdminManager. Start with the Main Hub
and work downstream.
Resolve all faults first and then check the warnings. Take appropriate action to
resolve the faults, as indicated in the following tables.
Main Hub Faults
Table 10-1 Main Hub Faults
Fault Message LED State Possible Causes Action Impact
Hardware failure.
STATUS
Red Internal hardware
failure.
Replace the Main Hub. System off-line.
Frequency band
not programmed.
STATUS
Red Factory default. Program the frequency band
using the AdminManager’s
Installation Wizard.
System off-line.
Main Hub is over
temperature.
STATUS
Red Fan failure.
Ambient tempera-
ture is above maxi-
mum.
If fan is not operating, replace
the Main Hub.
If fan is operating, check room
environmental controls.
Possible unit failure.
Failed to perform
system test.
STATUS
Red Internal failure. Replace the Main Hub when
possible.
Degraded performance.
Uplink EHn AGC
failure.
STATUS
Red Uplink fiber has
high optical loss.
Main Hub uplink
port failure.
Measure UL optical fiber loss.
Clean the Main Hub’s uplink
fiber port.
Move fiber pair to another
port. If fault is not reported,
fiber is okay and MH port is
dirty or bad. Use the Admin-
Manager to ‘Clear All Discon-
nect Status’ to clear the
disconnect fault on the origi-
nal port.
The Main Hub’s EHn
port is off-line; down-
link is okay.