Using the LCD with a Personal Computer -continued

3)Control sequence

(1)The command from a personal computer to the LCD monitor will take 400ms.

(2)The LCD monitor will send a return command 400ms* after it has received an encode. If the command isn't received correctly, the LCD monitor will not send the return command.

(3)The personal computer checks the command and confirms if the command which has been sent has been executed or not.

(4)This LCD monitor sends various codes other than the return code. When sending a control sequence via RS-232C, other codes from personal computers will be ignored.

*: The sending time of the return command may be delayed depending on the monitor's current activity (changing of the input signal, etc.).

[Example] Turn the power ON ( ' ' is for ASCII code)

Sending commands

Status code from LCD

Meaning

from the PC etc.

monitor

 

30 30 21 0D

 

Command for POWER ON

'0' '0' '!' ' '

 

 

 

 

30 30 21 0D

Command received

 

'0' '0' '!' ' '

(Command echo back)

4) Operation commands

The operation commands execute the basic operation setting of this LCD monitor. It may not operate when changing the signal:

Operation

ASCII

HEX

POWER ON

!

21h

POWER OFF

"

22h

INPUT RGB 1

_r1

5Fh 72h 31h

INPUT RGB 2

_r2

5Fh 72h 32h

INPUT RGB 3

_r3

5Fh 72h 33h

INPUT VIDEO

_v1

5Fh 76h 31h

INPUT DVD/HD

_v2

5Fh 76h 32h

INPUT S-VIDEO*

_v3

5Fh 76h 33h

POWER OFF command should not be used less than 1 minute after the power is turned on.

POWER ON command should not be used less than 1 minute after the power is turned off.

S-VIDEO IS SEPARATE only.

5)Read command

Host computer sends the command without Data-code to monitor.

After receiving this command, the monitor returns the command with Data-code of current status to host computer.

<ex> When Host computer checks the Power status of monitor, the status of monitor is powered-on.

Command from computer

Command from Monitor

Detail of command

30 30 76 50 0D

 

Ask about the power

'0''0''v''P'[enter]

30 30 76 50 31 0D

status of monitor.

 

'0''0''v''1'[enter]

Monitor is powered-on.

 

 

 

AV Denotes an AV unit function.

All AV functions are enabled when the AV unit is installed.

English-30

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NEC LCD3210 manual Using the LCD with a Personal Computer, Input S-VIDEO

LCD3210 specifications

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