A.7 rs-232/422 connector, Table a-5, Pc-to-model 420 connections for rs-232 operation – American Magnetics 420 Power Supply Programmer User Manual
Page 130: Table a-6, Appendix
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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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