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
10-4 InterReach Unison User Guide and Reference Manual
PN 8700-10
620003-0
No communica-
tion with EHn.
LINK Red Downlink fiber has
high optical loss.
Expansion Hub
downlink port fail-
ure.
Main Hub internal
failure.
If common point of failure for
more than one Expansion
Hub, replace the Main Hub.
Measure downlink optical
fiber loss.
Clean the Expansion Hub’s
downlink fiber port.
Clean the Main Hub’s down-
link fiber port.
Move the Main Hub fiber pair
to another port. If fault is not
reported, fiber is okay and the
Main Hub port is dirty or bad.
Use the AdminManager’s
“Clear All Disconnect Status”
command to clear the discon-
nect fault on the original port.
EHn and connected
RAUs are off-line.
E-HUB/
RAU
Off
EHn disconnected.
LINK Red The Expansion Hub
was connected and
is now discon-
nected.
The uplink fiber
optical loss exceeds
minimum threshold.
Expansion Hub
uplink laser failure.
If EHn is disconnected, recon-
nect it or clear the disconnect
fault using the AdminMan-
ager’s “Clear All Disconnect
Status” command.
If EHn is connected, check the
uplink fiber cable’s optical
loss.
Clean the Main Hub’s uplink
port.
Clean EHn’s uplink port.
Check that EHn’s uplink laser
is operational.
EHn and connected
RAUs are off-line.
E-HUB/
RAU
Off
EHn/RAU reports
fault condition.
LINK Green Any EH or RAU
fault
Use the AdminManager to
check for Expansion Hub and
RAU faults. Proceed to
Expansion Hub or RAU trou-
bleshooting section.
EHn and/or RAU
off-line
E-HUB/
RAU
Red
Table 10-1 Main Hub Faults (continued)
Fault Message LED State Possible Causes Action Impact