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18
APPENDIX C
MODEL 1053/A INTERFACE PIN ASSIGNMENTS
RS-232 INTERFACE
(DB-25 Female Connector)
(DCE Orientation)
Pin #
Signal
1
Shield GND
2
TD (Transmit Data) (DTE Source)
3
RD (Receive Data) (DCE Source)
4
RTS (Request to Send) (DTE Source)
5
CTS (Clear to Send) (DCE Source)
6
DSR (Data Set Ready) (DCE Source)
7
SGND (Signal Ground)
8
CD (Carrier Detect) (DCE Source)
15
TC (Transmitter Clock) (DCE Source)
17
RC (Receiver Clock) (DCE Source)
20
DTR (Data Terminal Ready) (DTE Source)
24
XTC (External Transmit Clock) (DTE Source)