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External adjustment
48
Special features
Pin NO.4 and Pin
NO.6 must be
connected on
monitor side
Use a crossed (reverse) cable.
Wire the cable so that each pair of data lines cross between the two devices. These data line pairs are RXD
(Receive to send) and TXD (Transmit data), DTR (DTE side ready) and DSR (DCE side ready), and RTS
(Ready to send) and CTS (Clear to send).
PC LCD TV
D-sub 9 D-sub 9
7-wire configuration
(Standard RS-232C cable)
3-wire configuration
(Not standard)
No. Pin name
1 No connection
2 RXD (Receive data)
3 TXD (Transmit data)
4 DTR (DTE side ready)
5 GND
6 DSR (Dce side ready)
7 RTS (Ready to send)
8 CTS (Clear to send)
9 No Connection
RXD 2 3 TXD
TXD 3 2 RXD
GND 5 5 GND
DTR 4 6 DSR
DSR 6 4 DTR
RTS 7 8 CTS
CTS 8 7 RTS
PC LCD TV
D-sub 9 D-sub 9
RXD 2 3 TXD
TXD 3 2 RXD
GND 5 5 GND
DTR 4 4 DTR
DSR 6 6 DSR
RTS 7 7 RTS
CTS 8 8 CTS
Type of connector : D-Sub 9-pin male
RS-232C configurations
Control line