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
4 Function Description
This section describes the functions of CDU-A.
The CDU-A can be divided into the following functional parts:
• TX part
• RX part
The figure below shows a block diagram of CDU-A (GSM 900) with duplexer.
TX1
Ant 1
RXA 1
Circ.
MCU
Duplex
Filter
RXA 2
TX2
Ant 2
RXB 1
Circ.
MCU
RXB 2
Duplex
Filter
P010160A
RXDA
Splitter
RXBP
RXDA
Splitter
RX Signal
RX Signal
Figure 1 Block Diagram of CDU-A with Duplexer (GSM 900)
The figure below shows a block diagram of CDU-A (GSM 1800 and GSM 1900)
without duplexer.
5 (10)
EN/LZT 720 0235 Uen R1A