American Magnetics 420 Power Supply Programmer - Manual (Page 130)

112 Rev. 7
Appendix
RS-232/422 Connector
A.7 RS-232/422 Connector
J12 is a 25-pin D-sub female connector.
Pin 1 of connector J12 is also connected to the Model 420 chassis ground.
Table A-5. PC-to-Model 420 connections for RS-232 operation.
PC (DTE)
DB-25 Pin
Model 420 (DCE)
DB-25 Pin
DTE
Function
2 2 TD
3 3 RD
4 4 RTS
5 5 CTS
6 6 DSR
7 7 GND
8 8 DCD
20 20 DTR
22 22 RI
Table A-6. PC (DB-9)-to-Model 420 connections for RS-232 operation.
PC (DTE)
DB-9 Pin
Model 420 (DCE)
DB-25 Pin
DTE
Function
3 2 TD
2 3 RD
7 4 RTS
8 5 CTS
6 6 DSR
5 7 GND
1 8 DCD
4 20 DTR
9 22 RI
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