Sharp LC-42AD5S, LC-37AD5S PC compatibility chart, RS-232C port specifications, Appendix

Appendix

PC compatibility chart

Resolution		Horizontal	Vertical	VESA
		Frequency	Frequency	Standard
VGA	640 g480	31.5 kHz	60 Hz	✓
SVGA	800 g600	37.9 kHz	60 Hz	✓
XGA	1024 g768	48.4 kHz	60 Hz	✓

VGA, SVGA and XGA 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.

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 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 eCR

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, g, 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”.)

0

0	0	0	9
–	3	0
1	0	0
0	0	5	5

When “?” is input for some commands, the present setting value responds.

9 pin D-sub/MINI-DIN conversion cable (optional: AN-A1RS)

RS-232C serial control cable

(cross type, commercially available)

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

?

? ? ? ?

Response code format

Normal response

O K

Return code (0DH)

Problem response (communication error or incorrect command)

E R R

Return code (0DH)

33