Pin Assignment And Functions Of Terminal - NEC DLP Cinema NC1700L User Manual

6-8. Pin Assignment and Functions of Terminal

6-8-1. PC CONTROL connector (RS-232) (D-sub 9 pin)
This is an RS-232C interface for controlling the projector from a PC. The projector operates as a DCE (Data Communication
Equipment), so use a straight cable when connecting to a PC.
Pin No. RS-232C Signal Name
1 CD
2 RXD
3 TXD
4 DTR
5 GND
6 DSR
7 RTS
8 CTS
9 RI
(Note) Do not use DTR and DSR signals when communicating.
Functions as RS-232C
Carrier detection Not used (N.C.)
Reception data Data transmission to an external device
Transmission data Data reception from an external device
Data Terminal ready (Note) Connection to 6 pins
Signal GND Signal GND
Data set ready (Note) Connection to 4 pins
Transmission request SYSTEM: Hi-Z (Not used)
CINEMA: Hi-Z (Used)
Transmission available SYSTEM: Fixed at -6.5 V (Not used)
CINEMA: ±10.5 V (Used: Depends on communication status)
Ring indicator Not used (N.C.)
Projector Connector Operation
6. Appendix
77