Reference Manual
Table Of Contents
- RBS 2206 Reference Manual
- Contents
- Preface
- Product Safety Requirements RBS 2000
- Environmental Capabilities
- Scope
- Terminology
- References
- Transport -40 C - +70 C
- Storage -25 C - +55 C
- Handling -40 C - +70 C
- Operation Indoor +5 C - +40 C
- Operation Outdoor -33 C - +40 C
- Operation Outdoor -33 C - +45 C
- Operation Outdoor -33 C - +55 C
- Operation Mast Mounted Equipment -33 C - +45 C
- Operation Mast Mounted Equipment -33 C - +55 C
- Radio Configurations, RBS 2206
- Product Data
- Unit Description, DXU-21
- Unit Description, dTRU
- Unit Decription, CDU-G and CDU-F
- Unit Description, CXU-10
- Unit Description, FCU-01
- Unit Description, DC-Filter 01
- Unit Description, PSU 1200 W
- Unit Description, ACCU/DCCU
- Unit Description, IDM
- Broadcast
- Common Control Channel Handling
- Physical Channel Handling
- Speech and Data Services
- Packet Data Services
- Call Control
- References
- Channel Activation
- Adaptive Frame Alignment
- Asynchronous Handover Detection
- RF Channel Release
- Deactivate SACCH
- Link Establish Indication
- Link Release Indication
- Link Establishment Request
- Link Release Request
- Transparent Message Transmission
- Transparent Message Reception
- SACCH Info Modify
- LAPDm
- Channel Reactivation
- Power Information
- GPRS, Physical Link Layer
- Base Station Power Control
- Channel Measurements
- Discontinuous Transmission
- Frequency Hopping
- Encryption
- Mode Modify
- Mobile Station Power Control
- Short Message Service
- Diversity Supervision
- Synchronization
- Radio Reception
- Radio Transmission
- Frequency Allocation Support
- Restart and Recovery
- Function Change
- Functionality Administration
- Operation and Maintenance Support
- References
- Concepts
- Buttons
- Change RU to Local Mode
- Change RU to Remote Mode
- Change RU to Remote Mode Cancel
- Change SW Power Boost Slave RU to Local Mode
- Loop Control
- RF Loop Test Supervision
- Calendar Time Request
- RSSI Temperature Compensation
- Max Cooling
- Fault Indicator
- BS Fault Indicator
- Operational Indicator
- Tx Not Enabled Indicator
- Local Mode Indicator
- External Alarms Indicator
- DC Disconnected Indicator
- Battery Mode Indicator
- Bat Disconnected Indicator
- AC Fault Indicator
- Test Result Indicators (not used)
- Local Mode in Progress
- Installation Data Handling
- Self Test and Supervision
- Diagnostics and Fault Handling
- Operation and Maintenance Terminal
- External Alarms
- Handling of Auxiliary Equipment
- Climate Protection
- EMC Capabilities
- Transmission Interface Handling G.703 2048 kbit/s
- Transmission Interface Handling DS1 1544 kbit/s
- Terrestrial Link Handling
- Channel Distribution Function
- Transport network O&M functions-DXX Support
- BTS Parameter Limitations
- Glossary
Product Description 9 (33)
SRN/X-00:146 Rev B 2001-05-16 © Ericsson. Commercial in confidence
Configuration Switch Unit (CXU)
The task of the CXU is to cross connect between the CDU and the dTRU in the receiving
path. The CXU makes it possible to expand or reconfigure a cabinet without moving or
replacing any RX cables.
Figure 5. Configuration Switch Unit.
The RX inputs/outputs on the dTRU and the CDU are placed in such positions that they
minimise the amount of cable types for connecting the CXU with the dTRU/CDU.
Combining and Distribution Unit (CDU)
The CDU combines the transmitted signals from the transceivers and distributes the
received signals. Duplex filters are included in the CDU. A measuring coupler, providing
forward and reflected power measurements for Voltage Standing Wave Ratio (VSWR)
calculations is located in the CDU. Two different CDU types exist to support all the
configurations.
• With hybrid combining, CDU-G, for 800, 900,1800 and 1900MHz. Allows base band
or synthesised frequency hopping.
• With filter combining to support large configurations, CDU-F, for 900 and 1800 MHz.
Allows base band frequency hopping. CDU-F is optimised for giving large
configurations maximum output power on minimum number of antennas.
Figure 6. CDU-G and CDU-F.
Duplex filters allow both receiver and transmitter path connections to a common antenna.
The duplex configurations minimise the number of required feeders and antennas as well
as the combining loss in the transmission path.
The different CDU types are further described in the Radio Specifications for the different
frequencies.
The CDU-G and CDU-F are hardware prepared to support EDGE.