Sharp Aquos LC-20AD5E - Appendix; PC Connectivity and Compatibility

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Appendix
PC compatibility chart
Resolution
Horizontal
Frequency
Vertical
Frequency
VESA
Standard
VGA 640 × 480 31.5 kHz 60 Hz

SVGA* 800 × 600 37.9 kHz 60 Hz

XGA 1024 × 768 48.4 kHz 60 Hz

WXGA 1280 × 768 47.7 kHz 60 Hz

48.1 kHz 60 Hz

1360 × 768 47.7 kHz 60 Hz

* We recommend that the output setting from the PC
be set to VGA as SVGA will produce less than optimal
viewing quality.
VGA, SVGA, XGA and WXGA are registered trademarks
of International Business Machines Co., Inc.
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.
If you set the resolution to “1280 x 768” or “1360 x 768”
in the XGA mode menu and a WXGA signal is received,
the image is displayed dot by dot while being received,
will be normal screen, and a black band is attached on
both sides of the screen.
Depending on the graphics card, resolutions of 1360 x
768 may not display correctly.
RS-232C port specifications
PC Control of the TV
When a programme 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.
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9 pin D-sub/MINI-DIN
conversion cable
(optional: AN-A1RS)
RS-232C serial control cable
(cross type, commercially available)
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.
Command format
Eight ASCII codes + CR
C1 C2 C3 C4 P1 P2 P3 P4
Command 4-digits Parameter 4-digits Return code
Command 4-digits: Command. The text of four characters.
Parameter 4-digits: Parameter 0 – 9, ×, blank, ?
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.
Response code format
Normal response
Problem response (communication
error or incorrect command)
0 0 5 5
1 0 0
– 3 0
0 0 0 9
0
? ? ? ?
?
O K
Return code (0DH)
E R R
Return code (0DH)
Communication conditions
Set the RS-232C communications settings on the PC
to match the TV’s communications conditions.
The TV’s communications settings are as follows:
Baud rate:
9,600 bps
Data length:
8 bits
Parity bit:
None
Stop bit:
1 bit
Flow control:
None