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 8-45
620003-0
PRELIMINARY Optical Power Budget
8.5 Optical Power Budget
Rich is updating this section for Unison.
Unison uses SC/APC connectors. The connector losses associated with mating to
these connectors is accounted for in the design and should not be included as ele-
ments of the Optical Power Budget. The reason is that when the Optical Power Bud-
get is defined, measurements are taken with these connectors in place.
The Main Hub/Expansion Hub link uses one fiber strand and its
Optical Power Budget is:
• Uplink: 5.5 dB @ 1550 nm
• Downlink: 7 dB @ 1310 nm
The following figure shows what is to be included when calculating Optical Power
Budget losses.
Figure 1 Losses to be Included in Optical Power Budget
Main
Hub
Expansion
Hub
Mated SC/APC Connectors
To be included in Optical Power Budget
MH
EH
Equipment Room
OSP POE
Equipment Room
ISP Cable ISP CableOSP Cable
SMF Jumper
FDP SC/APC Bulk Head
Fusion Splice
OSP POE
OSP = Outside Plant
ISP = Inside Plant
POE = Point of Entry