Ericsson Radio Systems AB PKRC1311004-1 Manual De Usuario
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.
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.
900 MHz and 1800 MHz.
The CXU is positioned between the CDU and the dTRU, intended for
12 TRX cabinets.
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.
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)
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