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Installing Signal Monitoring Cables
NOTE
When using the CSHU or CSHUA board, connect the signal monitoring cable to the MON/TOD2 port. The
pin assignment is the same as that of the CSH or CST board.
Before installing a signal monitoring cable, remove the cable already connected to the COM_IN port on the
CCUB board. Then, connect a cable of a proper length to the RTN 900.
•Mapping Relationships Between the Signals over Different Cables
NOTE
For cabinet sharing, the signal monitoring cable is not required for the RTN 900.
RJ-45 Connector of the Network Port to the
Cable on the CCUB (COMIN) Board
Pin 1
TX+
Pin 2
TX-
Pin 4
RX+
Pin 5
RX-
Pin 8
GND
No
Pin 3/6/7
connected
COM_IN port
System control board
RJ-45 Connector (TOD2) of the Network Port to the
Cable on the CSH/CST Board
White/Orange
Pin 6
Orange
Pin 3
Blue
Pin 8
White/Blue
Pin 7
Brown
Pin 5
-
Pin 1/2/4
30
CCUB board
CF RCV
RST
NMS/COM
EXT
CLK/TOD1 TOD2
MON/TOD2 port
RX+
White/Orange
RX-
Orange
TX+
Blue
TX-
White/Blue
GND
Brown
No
-
connected
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