User's Manual
Table Of Contents
- SECTION 1 General Information
- SECTION 2 InterReach Fusion System Description
- SECTION 3 Fusion Main Hub
- SECTION 4 Fusion Expansion Hub
- SECTION 5 Remote Access Unit
- SECTION 6 Designing a Fusion Solution
- 6.1 Overview
- 6.2 Downlink RSSI Design Goal
- 6.3 Maximum Output Power per Carrier
- 6.3.2 700 MHz (Upper C)
- 6.4 System Gain
- 6.5 Estimating RF Coverage
- 6.6 Link Budget Analysis
- 6.6.1 Elements of a Link Budget for Narrowband Standards
- 6.7 Optical Power Budget
- 6.8 Connecting a Main Hub to a Base Station
- 6.8.1 Uplink Attenuation
- 6.8.2 RAU Attenuation and ALC
- SECTION 7 Installing Fusion
- 7.1 Installation Requirements
- 7.1.2 Cable and Connector Requirements
- 7.1.3 Distance Requirements
- 7.2 Safety Precautions
- 7.2.1 Installation Guidelines
- 7.2.2 General Safety Precautions
- 7.2.3 Fiber Port Safety Precautions
- 7.3 Preparing for System Installation
- 7.3.1 Pre-Installation Inspection
- 7.3.2 Installation Checklist
- 7.3.3 Tools and Materials Required
- 7.3.4 Optional Accessories
- 7.4 Fusion Installation Procedures
- 7.4.1 Installing a Fusion Main Hub
- 7.4.3 Installing RAUs
- 7.4.4 Configuring the System
- 7.5 Splicing Fiber Optic Cable
- 7.6 Interfacing the Fusion Main Hub to an RF Source
- 7.6.1 Connecting a Single Fusion Main Hub to an RF Source
- 7.7 Connecting Contact Alarms to a Fusion System
- 7.8 Alarm Monitoring Connectivity Options
- 7.8.1 Direct Connection
- 7.8.5 Ethernet RF Modem
- SECTION 8 Replacing Fusion Components
- SECTION 9 Maintenance, Troubleshooting, and Technical Assistance
- APPENDIX A Cables and Connectors
- APPENDIX B Compliance
- APPENDIX C Faults, Warnings, Status Tables for Fusion, Fusion Wideband, Fusion SingleStar
Help Hot Line (U.S. only): 1-800-530-9960 6-29
D-620610-0-20 Rev F CONFIDENTIAL
Link Budget Analysis
6.6.2 Narrowband Link Budget Analysis for a Microcell Application
• c = a + b
• f = c + d + e
• j = g + h + i
• n = k + l + m
• k: in this example, k represents the thermal noise for a TDMA signal, which
has a bandwidth of 30 kHz
• p = f – j – n
Table 6-23 Narrowband Link Budget Analysis: Downlink
Line Downlink
Transmitter
a. BTS transmit power per carrier (dBm) 33
b. Attenuation between BTS and Fusion (dB) –23
c. Power into Fusion (dBm) 10
d. Fusion gain (dB) 0
e. Antenna gain (dBi) 3
f. Radiated power per carrier (dBm) 13
Airlink
g. Multipath fade margin (dB) 6
h. Log-normal fade margin with 9 dB std. deviation, 95% area coverage,
87% edge coverage
10
i. Body loss (dB) 3
j. Airlink losses (not including facility path loss) 19
Receiver
k. Thermal noise (dBm/30 kHz) –129
l. Mobile noise figure (dB) 7
m. Required C/I ratio (dB) 17
n. Minimum received signal (dBm) –105
p. Maximum path loss (dB) +99