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5-2 Smartio C104H/PCI Series User’s Manual
C104H/PCI DB9 Male (Opt4D)
1 DCD
2 RxD
3 TxD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
According to cable options and devices connected, several possible connection
types are illustrated as below.
Type 1: To connect C104H/PCI Series to a DTE device.
PC COM2 port, Serial Printer,
Terminal, or any DTE Device
Opt4C
Null Modem Cable
C104H/PCI DTE Device
DB25 Male DB25 Male
TxD 2 2 TxD
RxD 3 3 RxD
RTS 4 4 RTS
CTS 5 5 CTS
DSR 6 6 DSR
DTR 20 20 DTR
GND 7 7 GND
DCD 8 8 DCD