NEC NC1600C Pin Assignment and Functions of Terminal, PC CONTROL connector D-Sub9 pin, Appendix

6. Appendix

6-7. Pin Assignment and Functions of Terminal

6-7-1. PC CONTROL connector (D-Sub 9 pin)

This is an RS-232C interface for controlling the projector head from a PC. The projector operates as a DCE (Data Communication

Equipment), so use a straight cable when connecting to a PC.

6 7 8 9

1 2 3 4 5

Pin	RS-232C	Functions as RS-232C	Projector Connector Operation
No.	Signal Name
1	CD	Carrier detection	Not used (N.C.)
2	RXD	Reception data	Data transmission to an external device
3	TXD	Transmission data	Data reception from an external device
4	DTR	Data Terminal ready (Note 1)	Connection to 6 pins
5	GND	Signal GND	Signal GND
6	DSR	Data set ready (Note 1)	Connection to 4 pins
7	RTS	Transmission request	SYSTEM (Note 2): Hi-Z (Not used)
			CINEMA (Note 2): Hi-Z (Used)
8	CTS	Transmission available	SYSTEM (Note 2): Fixed at -6.5 V (Not used)
			CINEMA (Note 2): ± 10.5 V (Used: Depends
			on communication status)
9	RI	Ring indicator	Not used (N.C.)

Note 1: Do not use DTR and DSR signals when communicating.

Note 2: Connector operations vary according to the PC control signal switch (CINEMA/SYSTEM). (When in SYSTEM, do not use RTS and CTS signals.)

Internal Configuration Diagram of RS-232C Communication System

PC

RS-232C Connector

Projector NC1600C

PC Control Signal Switch

CINEMA

SYSTEM

Cinema

Control Block

System

Control Block

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