LG 19LS4D Owners Manual - Page 111
EXTERNAL CONTROL DEVICE SETUP, RS-232C Setup, Type of Connector; D-Sub 9-Pin Male
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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 TV's functions externally. Connect the serial port of the control device to the RS-232C jack on the TV back panel. Note: RS-232C connection cables are not supplied with the TV. RS-232C IN (CONTROL & SERVICE) Type of Connector; D-Sub 9-Pin Male No. Pin Name 1 No connection 2 RXD (Receive data) 1 5 3 TXD (Transmit data) 4 DTR (DTE side ready) 5 GND 6 DSR (DCE side ready) 7 RTS (Ready to send) 6 9 8 CTS (Clear to send) 9 No Connection RS-232C Configurations 7-Wire Configurations (Standard RS-232C cable) PC TV RXD 2 TXD 3 GND 5 DTR 4 DSR 6 RTS 7 CTS 8 3 TXD 2 RXD 5 GND 6 DSR 4 DTR 8 CTS 7 RTS D-Sub 9 D-Sub 9 3-Wire Configurations(Not standard) PC TV RXD 2 TXD 3 GND 5 DTR 4 DSR 6 RTS 7 CTS 8 3 TXD 2 RXD 5 GND 6 DTR 4 DSR 7 RTS 8 CTS D-Sub 9 D-Sub 9 APPENDIX 109