NEC S521 user manual Pin Assignment, English-36, Rxd Txd, Gnd

Pin Assignment

1) RS-232C input/output

Pin No	Name		D-SUB 9P
1	connected to 7&8
			5
2	RXD	1
3	TXD
4	connected to 6	6	9
5	GND
6	connected to 4
7	connected to 1&8
8	connected to 1&7
9	NC

This LCD monitor uses RXD, TXD and GND lines for RS-232C control.

2) REMOTE IN

3) REMOTE OUT

English-36