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

Projector NC800C

PC Control Signal Switch

CINEMA

SYSTEM

Cinema

Control Block

PC

RS-232C

Connector

System

Control Block

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