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5-4
Smartio
C168H/HS User’s Manual
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
CTS
8
4
RTS
RTS
7
5
CTS
DTR
4
6
DSR
DSR
6
20
DTR
GND
5
7
GND
DCD
1
8
DCD
Type 2:
To connect
Smartio
C168 Series to a DCE device.
Modem,
or any DCE Device
Opt8A/S
Null Modem Cable
Opt8A/S
DCE Device
DB25 Female
DB25 Female
RxD
2
2
RxD
TxD
3
3
TxD
CTS
4
4
CTS
RTS
5
5
RTS
DTR
6
6
DTR
DSR
20
20
DSR
GND
7
7
GND
DCD
8
8
DCD