
June 2011 3 – 15
3.2.2 RS-232-C/V.24 data interface, 9-pin, D-sub
Flange socket with female insert
Pin no. Assignment Designation
1 Shield Chassis Ground
2 TxD Transmit Data
3 RxD Receive Data
4 DSR Data Set Ready
5 GND Signal Ground
6 DTR Data Terminal Ready
7 CTS Clear to Send
8 RTS Request to Send
9 Not assigned
Chassis External shield = Chassis
Control model RS-232-C/V.24 connector
X21
TNC 124 x
TNC 310 x
TNC 370 x
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