Connection Option (Opt8x) and Cable Wiring
Smartio C168H/PCI User’s Manual
5-7
PC COM2 port, Serial Printer,
Terminal, or any DTE Device
Opt8D
Opt8D
DTE Device
DB9 Male
DB25 Male
RxD
2
2
TxD
TxD
3
3
RxD
GND
5
7
GND
RTS
7
4
RTS
CTS
8
5
CTS
DTR
4
6
DTR
DSR
6
20
DSR
DCD
1
8
DCD