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Appendix
PC compatibility chart
Resolution
Horizontal
Frequency
Vertical
Frequency
VESA
Standard
640 g 480VGA 31.5 kHz 60 Hz
800 g 600SVGA 37.9 kHz 60 Hz
Communication procedure
Send the control commands from the PC via the RS-
232C connector.
The TV operates according to the received command
and sends a response message to the PC.
Do not send multiple commands at the same time. Wait
until the PC receives the OK response before sending
the next command.
Return codeCommand 4-digits Parameter 4-digits
Command format
Eight ASCII codes e CR
Command 4-digits: Command. The text of four characters.
Parameter 4-digits: Parameter 0 – 9, g, blank, ?
C1 C2 C3 C4 P1 P2 P3 P4
Parameter
Input the parameter values, aligning left, and fill with
blank(s) for the remainder. (Be sure that four values are
input for the parameter.)
When the input parameter is not within an adjustable
range, ERR returns. (Refer to Response code format.)
When ? is input for some commands, the present setting
value responds.
0055
100
30
0009
0
????
?
Return code (0DH)
Response code format
Normal response
Problem response (communication error or incorrect
command)
Return code (0DH)
OK
ERR
VGA, SVGA, XGA and WXGA are registered
trademarks of International Business Machines
Corp.
NOTE
This TV has only limited PC compatibility, correct operation
can only be guaranteed if the video card conforms exactly
to the VESA 60Hz standard. Any variations from this
standard will result in picture distortions.
Depending on the graphics card, resolutions of 1360 g
768 may not display correctly.
RS-232C port specifications
PC Control of the TV
When a program is set, the TV can be controlled
from the PC using the RS-232C terminal.
The input signal (PC/video) can be selected, the
volume can be adjusted and various other
adjustments and settings can be made, enabling
automatic programmed playing.
Attach an RS-232C cable cross-type (commercially
available) to a 9 pin D-sub/MINI-DIN (optional: AN-
A1RS) for the connections.
NOTE
This operation system should be used by a person who is
accustomed to using PCs.
Communication conditions
Set the RS-232C communications settings on the PC
to match the TVs communications conditions. The TVs
communications settings are as follows:
Baud rate:
Parity bit:
Data length:
Stop bit:
Flow control:
9,600 bps
8 bits
None
1 bit
None
RS-232C serial control cable
(cross type, commercially available)
9 pin D-sub/MINI-DIN
conversion cable
(optional: AN-A1RS)
1024 g 768XGA 48.4 kHz 60 Hz
1280 g 768WXGA 47.7 kHz 60 Hz
1360 g 768WXGA 47.7 kHz 60 Hz
LC-42RD2EA_GB_f 07.7.9, 11:49 AM33
35


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