RAD Data comm FCD-X21 Manuel d'installation Page 137

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FCD-E1 E1 Port Connectors A-1
Appendix A
Pinouts
A.1 E1 Port Connectors
The unbalanced interface of each E1 port is terminated in two BNC connectors:
The connectors of the main link port are designated RX-IN and TX-OUT.
The connectors of the sublink port are designated RX-OUT and TX-IN.
The balanced interface of each port is terminated in an eight-pin RJ-45 connector,
wired in accordance with Table A-1.
Table A-1. MAIN E1 and SUB E1 Port Connectors, Pin Allocation
Pin Designation Direction Function
MAIN E1 Port SUB E1 Port
1 RD(T) Input Output Receive data (tip)
2 RD(R) Input Output Receive data (ring)
3 FG
Frame ground
4 TD(T) Output Input Transmit data (tip)
5 TD(R) Output Input Transmit data (ring)
6 FG
Frame ground
7, 8 N/A N/A N/A Not connected
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