External Control Device Setup - LG 22LH2020 Owner's Manual

APPENDIX

EXTERNAL CONTROL DEVICE SETUP

RS-232C Setup
Connect the RS-232C (serial port) input jack to an
external control device (such as a computer or an A/V
control system) to control the product's functions
externally.
Connect the serial port of the control device to the
RS-232C jack on the product back panel.
Note: RS-232C connection cables are not supplied
with the product.
Type of Connector; D-Sub 9-Pin Male
No.
1
2
3
4
5
6
7
8
9
RS-232C Configurations
7-Wire Configurations ( Standard RS-232C cable )
RXD
TXD
GND
DTR
DSR
RTS
CTS
D-Sub 9
152
Pin Name
No connection
RXD ( Receive data )
TXD ( Transmit data )
DTR ( DTE side ready )
GND
DSR ( DCE side ready )
RTS ( Ready to send )
CTS ( Clear to send )
No Connection
PC TV
2 3 TXD
3 2 RXD
5 5 GND
4 6
6 4
7 8
8 7
D-Sub 9
1
6
3-Wire Configurations ( Not standard )
RXD
TXD
GND
DSR DTR
DTR DSR
CTS RTS
RTS CTS
5
9
PC TV
2 3
3 2
5 5
4 6
6 4
7 7
8 8
D-Sub 9 D-Sub 9
TXD
RXD
GND
DTR
DSR
RTS
CTS