User Manual
Table Of Contents
- Contents
- 1 Introduction
- 2 Product Safety Requirements RBS 2000
- 3 Environmental Capabilities
- 3.1 Scope
- 3.2 Terminology
- 3.3 References
- 3.4 Transport -40 C – +70 C
- 3.5 Storage -25 C – +55 C
- 3.6 Handling -40 C – +70 C
- 3.7 Operation Indoor +5 C – +40 C
- 3.8 Operation Outdoor -33 C – +40 C
- 3.9 Operation Outdoor -33 C – +45 C
- 3.10 Operation Outdoor -33 C – +55 C
- 3.11 Operation Mast-Mounted Equipment -33 C – +45 C
- 3.12 Operation Mast-Mounted Equipment -40 C – +55 C
- 4 Climate Protection
- 5 EMC Capabilities
- RBS 2101, Product Description
- RBS 2102, Product Description
- RBS 2103, Product Description
- RBS 2202, Product Description
- RBS 2101, 2102, 2103 & 2202 Radio Configurations
- RBS 2202 Antenna Configurations
- ACCU Description
- BFU Description
- CDU-A Description
- CDU-C Description
- CDU-C+ Description
- CDU-D Description
- DXU Description
- DXU-21 Description
- ECU Description
- PSU -48 V Description
- PSU 230 V Description
- sTRU Single Transceiver Unit Description
- V3 Climate Unit Description
- Glossary
CDU-A Combining and Distribution Unit
1 Product Overview
This section includes a product overview of CDU-A, a combining and distribution
unit used in low-capacity cells where high coverage is needed.
1.1 Main Functions
This section describes the main functions of CDU-A:
• Distribution of two independent RX antennas to two receivers
• Connection of two TXs to two antennas
• Simultaneous transmission and reception on each antenna (GSM 900
version)
• No transmitter combining
• Baseband and synthesizer frequency hopping support
• Power and supervision of an external Tower Mounted Amplifier (TMA) via
the receiver (RX) antenna cables (GSM 1800 and GSM 1900 versions)
Note: TMA is optional for GSM 1800 and mandatory for GSM 1900.
1.2 Variants
CDU-A is available for:
• GSM 900
• GSM 1800
• GSM 1900
The GSM 1800 and GSM 1900 versions are identical, except for the frequency
bands.
CDU-A for GSM 900 is equipped with two duplexers. CDU-A for GSM 1800
and GSM 1900 are not equipped with duplexers and therefore require separate
antenna feeders for the TX and RX signals in both the A and B signal paths.
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EN/LZT 720 0235 Uen R1A