Measurement Computing Serial488A - Manual (Page 31)

2.21
IBM PC/XT/PS2 to Serial488A Wiring Diagram (RS-232)
2
3
4
5
6
2
3
4
5
6
-RxD
-TxD
CTS
RTS
Vtest
-RxD
-TxD
DSR
CTS
RTS
DB-25 Female DB-25 Male
7 7 Gnd Gnd
IBM PC/XT/PS2 to Serial488A
IBM AT to Serial488A Wiring Diagram (RS-232)
8
7
6
4
1
2
3
5
2
3
7
-RxD
-TxD
Gnd
-RxD
DCD
Gnd
-TxD
DB-9 Female DB-25 Male
4 CTS RTS
5 RTS CTS
DSR
DTR
IBM AT to Serial488A
Note: Standard AT 9 Pin to 25 Pin adapter cables are not wired as shown above and will
not work with the Serial488A.