User Manual
Table Of Contents
- Front Page
- Pretext
- Contents
- Figures
- Abbreviations
- 1. Safety
- 2. Introduction
- 3. Installation
- 4. Commissioning
- 5. Functional Description
- Repeater Design
- Block Diagram
- Board and Unit Descriptions
- DC - Directional Coupler
- DPX - Duplex Filter
- LNA - Low Noise Amplifier
- CHA - Channel Amplifier Board for Channel Selective Operation
- CSA and PA Boards for Channel Selective CDMA Operation
- BSA and PA Boards for Band Selective Operation
- DIA Board
- CU Control Unit Board
- Repeater CU Software and Hardware Compatibility
- Cabling
- 6. Optionals
- 7. Repeater Alarms
- Index
- Questionnaire
Sports Arena
A 2000 spectators sports arena with metallic roof had an indoor signal
strength too low to provide a fair service in most parts of the arena. The
nearest base station was 8 kilometers away and it was equipped with one
carrier only.
A donor antenna directed towards the base station was mounted on a
mast outside the building and a repeater was installed inside the building
with the service antenna on the arch vault. The scenario is illustrated in
Figure 2-3.
The antenna isolation was measured to over 85dB.
Measured levels: Received signal level – 80.0 dBm
Donor antenna gain 15.0 dBi
Cable loss
–
5.0 dB
Repeater input level – 70.0 dBm
Adjusted repeater gain 75.0 dB
Repeater output level 5.0 dBm
Cable loss – 2.0 dB
Service antenna gain 7.0 dBi
Radiated output level 10.0 dBm
The signal strength was fair for service in the entire arena.
Service antenna
Donor antenna
Figure 2-3. Repeater in sports arena
Allgon Systems AB AR Repeaters Introduction
User’s Manual VD203 66/EN Rev. P1A 2000-09 2 - 5