NEC Display Solutions of America, Inc.
M402H Installation Guide
Ceiling Mounted and Desktop
Rev 1.1
www.necdisplay.com
M402H Page 6 of 6
Input / Output Panel
PC Control Codes
Function
Code Data
POWER ON
02H
00H
00H 00H 00H 02H
POWER OFF
02H 01H 00H 00H 00H 03H
INPUT SELECT COMPUTER1
02H 03H 00H 00H 02H 01H 01H 09H
INPUT SELECT HDMI 1
02H
03H
00H
00H
02H
01H
1AH
22H
INPUT SELECT HDMI 2
02H
03H
00H
00H
02H
01H
12H
AAH
INPUT SELECT VIDEO
02H 03H 00H 00H 02H 01H 06H 0EH
INPUT SELECT VIEWER
02H 03H 00H 00H 02H 01H 1FH 27H
INPUT SELECT NETWORK
02H 03H 00H 00H 02H 01H 20H 28H
INPUT SELECT USB DISPLAY
02H 03H 00H 00H 02H 01H 22H 2AH
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
PROJECTOR INFORMATION REQUEST
00H BFH 00H 00H
01H 02H
C2H
ERROR STATUS REQUEST
00H 88H 00H 00H
00H 88H
INFORMATION REQUEST
03H 8AH 00H 00H
00H 8DH
Note:
Contact your NEC rep for codes not listed.
Cable Connection
Communication Protocol:
Baud Rate:
38400 bps
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