Reference Manual

Unit Decription, CDU-G and CDU-F
9 Unit Decription, CDU-G and CDU-F
This chapter describes the CDU-F and CDU-G for RBS 2206. The
Combining and Distribution Unit (CDU) is the interface between
Transceivers (TRUs) and the antenna system. The CDU enables several
TRUs to share antennas.
A range of CDU types have been developed to support different
configurations. Information about which configurations can be built
with the various types of CDU is contained in chapter Radio
Configurations, RBS 2206.
The CDUs can handle GMSK and EDGE.
9.1 CDU Types
A range of CDU types is available. The choice depends on present and
future capacity requirements. These factors are considered when
selecting CDU type: initial cost, capacity requirements (present and
future), number of antennas and frequency hopping capability.
•
CDU-G handles one or two dTRUs. Connected to one dTRU, it
provides a low capacity, high output power configuration.
Connected to two dTRUs, it provides a high capacity, low output
power configuration. CDU-G supports both synthesiser and
baseband frequency hopping.
•
CDU-F handles one to six dTRUs. CDU-F is a high capacity,
medium output power configuration that only supports baseband
frequency hopping.
9.1.1 CDU-G
CDU-G
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Figure 89 CDU-G
EN/LZT 720 0008 P2A
2001-11-28
159 (485)
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