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
Installing Unison Components PRELIMINARY
6-22 InterReach Unison User Guide and Reference Manual
PN 8700-10
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Connecting the Fiber Cables to the Main Hub
Considerations:
• Before connecting the fiber cables, confirm that their optical loss does not exceed
3 dB optical budget.
• If fiber distribution panels are used, confirm that the total optical loss of fiber
cable, from the Main Hub through distribution panels and patch cords to the
Expansion Hub, does not exceed the optical budget.
• Make sure the fiber cable’s connectors are SC/APC (angle-polished). Using any
other connector type will result in degraded system performance and may damage
the equipment.
NOTE: Observe all Fiber Port Safety Precautions listed in Section 6.2.3 on page 6-4.
To clean the fiber ports:
Use compressed air to blow dust out of each fiber port before you insert the SC/APC
connector. Note that compressed air should not leave any residue as this will contam-
inate the fiber port.
To clean the fiber connectors:
Be sure that the fiber cable’s SC/APC connectors are clean and free of dust or oils. If
the fiber connector front face is not free of dust or oils, follow the manufacturer’s rec-
ommendations for cleaning it.
To connect the fiber cables:
The fiber cable is labeled with either
1 or 2, or is color-coded. For proper connection
between the Main Hub ports and the Expansion Hub ports, refer to the numbering or
color-coded connections you recorded when installing the Expansion Hub(s).
If the fiber jumper is labeled with
1 or 2:
1. Connect 1s to UPLINK ports on the Main Hub.
Refer to the connections you recorded, or the cable label, when the Expansion
Hub(s) were installed to know which Main Hub
UPLINK port to use.
2. Connect 2s to DOWNLINK ports on the Main Hub.
Refer to the connections you recorded, or the cable label, when the Expansion
Hub(s) were installed to know which Main Hub
DOWNLINK port to use.
If the fiber jumper is color-coded (for example, “blue” or “red”):
1. Connect “blue”s to UPLINK ports on the Main Hub.
Refer to the connections you recorded, or the cable label, when the Expansion
Hub(s) were installed to know which Main Hub
UPLINK port to use.
2. Connect “red”s to DOWNLINK ports on the Main Hub.
Refer to the connections you recorded, or the cable label, when the Expansion
Hub(s) were installed to know which Main Hub
DOWNLINK port to use.