NEC Display Solutions of America, Inc.
U321H Installation Guide
Desktop and Ceiling Mount
v1.0
www.necdisplay.com
U321H
Page 9 of 9
Input Panel
z
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 HDMI 1
02H 03H 00H 00H 02H 01H A1H A9H
INPUT SELECT HDMI 2
02H 03H 00H 00H 02H 01H A2H AAH
INPUT SELECT VIDEO
02H 03H 00H 00H 02H 01H 06H 0EH
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
NOTE 1:
It is recommended to set the projector to “Idle Mode” in the Setup menu for best Power ON response.
NOTE 2:
Pins 2, 3, 5, 6 and 8 are used inside the projector.
NOTE 3:
For long cable runs it is recommended to set communication speed in the Setup menu to 9600 bps.
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
