NEC Solutions (America), Inc.
Visual Systems Division
LT280 Installation Guide
Ceiling Mounted and Desktop
Rev 1.1
www.necvisualsystems.com
LT280
Page 6 of 6
Input 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 CCOMPUTER
02H 03H 00H
00H
02H
01H
01H
09H
INPUT SELECT VIDEO
02H 03H 00H
00H
02H
01H
06H
0EH
INPUT
SELECT
S-VIDEO
02H
03H 00H 00H 02H 01H 0BH 13H
INPUT SELECT DVI (DIGITAL)
02H 03H 00H 00H 02H 01H 1AH 22H
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
Note:
Contact your NEC rep for codes not listed.
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
NOTE 1 : Pins 2, 3, 5, and 6 are used inside the projector.
NOTE 2: For long cable runs it is recommended to set communication speed within the projector 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
