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
Unit Description, CXU-10
9 Unit Description, CXU-10
The Configuration Switch Unit (CXU) is a unit that distributes the RX
signals from the CDU to the dTRU within the same RBS. The CXU
supports both GMSK and 8-PSK. One CXU can support up to three
CDUs. To configure the CXU, six switches can be set to connect
different CDUs with different dTRUs. A block diagram of the CXU is
shown in.
The CXU is a dual band product, which means it can be used for both
900 MHz and 1800 MHz.
The CXU is positioned between the CDU and the dTRU, intended for
12 TRX cabinets.
9.1 Block Diagram
CDU
bus
Power-
supply
CXU
RX1_TRU1
RX2_TRU1
RX1_TRU2
RX2_TRU2
RX1_TRU3
RX2_TRU3
RX1_TRU4
RX2_TRU4
RX1_TRU5
RX2_TRU5
RX1_TRU6
RX2_TRU6
RX2_CDU3
RX1_CDU3
RX2_CDU2
RX1_CDU2
RX2_CDU1
RX1_CDU1
P007459A
Figure 72 Block diagram of the CXU
9.2 Functions
The CXU has six different switches. By setting those switches into
different positions, the CXU can be configured to connect radio signals
from a specific CDU to a specific receiver input on a dTRU.
EN/LZT 720 0008 R1A
2001-06-26
135 (421)
© Ericsson Radio Systems AB
— All Rights Reserved —