NEC P474W - Page 9

NEC Display Solutions of America, Inc.
P474W/P474UU/P554W/P554U Installation Guide
Desktop and Ceiling Mount Rev 1.0
www.necdisplay.com P474W/P474U/P554W/P554U Page 9 of 14
PC Control Codes
Function Code Data
POWER ON 02H 00H 00H 00H 00H 02H
POWER OFF 02H 01H 00H 00H 00H 03H
INPUT SELECT Computer 02H 03H 00H 00H 02H 01H 01H 09H
INPUT SELECT HDMI1 02H 03H 00H 00H 02H 01H A1H A9H
INPUT SELECT HDMI2 02H 03H 00H 00H 02H 01H A2H AAH
INPUT SELECT Video 02H 03H 00H 00H 02H 01H 06H 0EH
INPUT SELECT Computer 02H 03H 00H 00H 02H 01H 01H 09H
INPUT SELECT HDBaseT 02H 03H 00H 00H 02H 01H BFH C7H
PICTURE MUTE ON 02H 10H 00H 00H 00H 12H
PICTURE MUTE OFF 02H 11H 00H 00H 00H 13H
SOUND MUTE ON 02H 12H 00H 00H 00H 14H
SOUND MUTE OFF 02H 13H 00H 00H 00H 15H
AUTO ADJUST 02H 0FH 00H 00H 02H 05H 00H 18H
Cable Connection
Communication Protocol:
Baud Rate: 38400 bps (for cable lengths longer than 20’, it is recommended changing to 9600 bps in setup menu)
Data Length: 8 bits
Parity: No Parity
Stop Bit: One bit
X on/off: None
Communications: Full duplex
PC Control Connector (D-Sub 9P)
NOTE 1 : Pins 1, 4, 6, and 9 are used inside the projector.
NOTE 2: For long cable runs it is recommended to set communication speed within the projector to 9600 bps.
NOTE 3: Jumper “Request to Send” and “Clear to Send” together on both ends of the cable to simplify cable connection.
1 2
3 4
5
6 7 8
9
To GND of PC
To RxD of PC
To TxD of PC
To CTS of PC
To RTS of PC