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
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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 men
u)
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
6647W/6647WU/6655W/6655WU Installation Guide
Desktop
and
Ceiling
Mount
Rev 1.0
Dukane AV Division
www.dukaneav.com 6647W/6647WU/6655W/6655WU_Installation_Guide-00
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