NEC 4020, 4620 user manual English-33

Page 35

3)Control sequence

(1)The command from a computer to the LCD monitor will be sent in 400ms.

(2)The LCD monitor will send a return command 400ms* after it has received and encoded. If the command isnÕt 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 return code. When having a control sequence by RS-232C, reject other

codes from personal computers side.

*: The sending time of return command may delay depending on the condition (during changing of the input signal, etc.).

Example: Turn the power ON ( Õ

Õ is for ASCII code)

 

 

 

 

 

 

Sending commands

 

Status code from

Meaning

 

from the PC

 

LCD monitor

 

 

 

 

 

 

 

 

 

30 30 21 0D

 

 

Command for

 

Õ0Õ Õ0Õ Õ!Õ Õ Õ

 

 

POWER ON

 

 

 

 

 

 

 

 

30 30 21 0D

Command received

 

 

 

Õ0Õ Õ0Õ Õ!Õ Õ Õ

(Command echoed back)

 

 

 

 

 

4)Operation commands

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

English

Operation

ASCII

HEX

 

 

 

POWER ON

!

21h

 

 

 

POWER OFF

"

22h

 

 

 

INPUT DVI

_r1

5Fh 72h 31h

 

 

 

INPUT VGA

_r2

5Fh 72h 32h

 

 

 

INPUT RGB/HV

_r3

5Fh 72h 33h

 

 

 

Operation

ASCII

HEX

 

 

 

 

INPUT HDMI

_h1

5Fh 68h 31h

 

 

 

INPUT VIDEO*1

_v1

5Fh 76h 31h

INPUT DVD/HD

_v2

5Fh 76h

32h

 

 

 

 

INPUT S-VIDEO*2

_v3

5Fh 76h

33h

INPUT TV

_t1

5Fh 74h

31h

 

 

 

 

¥POWER OFF command should be operated over 1 minute after the power is turned on.

¥POWER ON command should be operated over 1 minute after the power is turned off.

*1 S-VIDEO is enabled by having the ÒS-VIDEOÓ cable connected with the ÒS-VIDEOÓ signal present and selecting ÒPRIORITY MODEÓ. *2 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 ask 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

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

 

 

 

Ask about the power status of monitor.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

30 30 76 50

31 0D '0''0''v''P''1'[enter]

Monitor is powered-on.

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Structure of the Read-command

 

 

 

 

 

 

 

 

 

 

 

 

 

 

ASCII

 

HEX

 

 

 

 

 

 

 

Function

Data (Receive)

Function

 

Data (Receive)

 

 

 

 

 

 

 

 

 

 

 

 

 

POWER

ON

 

 

vP

1

 

76 50

 

31

 

 

OFF(stand by)

vP

0

 

76 50

 

30

 

 

 

 

 

 

 

 

DVI(DVI-D)

 

 

vI

r1

76 49

 

72 31

 

 

VGA(D-SUB)

vI

r2

76 49

 

72 32

 

Input

RGB/HV(BNC)

vI

r3

76 49

 

72 33

 

 

HDMI

 

 

vI

h1

76 49

 

68 31

 

 

Video

 

 

vI

v1

76 49

 

76 31

 

 

DVD/HD

 

 

vI

v2

76 49

 

76 32

 

 

S-VIDEO

 

 

vI

v3

76 49

 

76 33

 

 

TV

 

 

vI

t1

76 49

 

74 31

 

Picture mode

HIGHBRIGHT

vM

p1

76 4D

 

70 31

 

STANDARD

 

 

vM

p2

76 4D

 

70 32

 

 

 

 

 

 

 

Around

 

resolution 0.5ûC

tcx1

(ex.) +25.0

74 63 78 31

 

2B

20 32 35 2E 30

 

AV board

 

resolution 1ûC

tc1

(ex.) +25

74 63 31

 

2B

20 32 35

 

 

 

 

 

 

 

 

 

 

 

 

 

Temperature

Around

 

resolution 0.5ûC

tcx2

(ex.) +30.5

74 63 78 32

 

2B

20 33 30 2E 35

of Internal

Inverter

 

resolution 1ûC

tc2

(ex.) +31

74 63 32

 

2B

20 33 31

monitor

PCB

 

 

 

 

 

 

 

 

 

 

 

 

Around

 

resolution 0.5ûC

tcx3

(ex.) +30.5

74 63 78 33

 

2B

20 33 30 2E 35

 

 

 

 

 

 

 

 

 

 

 

 

 

Mainboard

 

resolution 1ûC

tc3

(ex.) +31

74 63 33

 

2B

20 33 31

 

 

 

 

 

 

 

 

 

 

 

 

 

NOTE: For complete information please see file ÒExternal_Control_LCD4X20.pdfÓ on the CD-ROM.

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Contents MultiSync LCD4020 MultiSync LCD4620 TV Tuner IndexEnglish-1 Canadian Department of Communications Compliance StatementFCC Information Declaration of the Manufacturer Important InformationDeclaration Disposing of your old NEC productSafety Precautions, Maintenance & Recommended Use Contents Control Panel Parts Name and FunctionsTerminal Panel Wireless Remote Control Handling the remote control Operating Range for the Remote ControlInstallation Ventilation Requirements Attaching Mounting AccessoriesAttach Mounting Accessories Installing and removing standEnglish-11 Prevent TippingConnect the supplied power cord SetupDetermine the installation location Install the remote control batteriesAdjust the image See Switch on the power of all the attached external equipmentAdjust the sound Adjust the screen See pages 24Connect the LCD Monitor to a Personal Computer Connecting a Personal ComputerConnections Before making connectionsEnglish-15 Connecting to a Macintosh ComputerConnect the LCD Monitor to Macintosh English-16 Connecting with Digital Interface EquipmentConnect the LCD Monitor to a Computer with a Digital Output RCA Connecting a DVD Player with component outConnect the LCD Monitor to a DVD Player English-17Scart Connecting a DVD Player with Hdmi outConnecting a DVD Player with Scart out English-18English-19 Connecting to a Stereo AmplifierConnect the LCD Monitor to a Stereo Amplifier English-20 Connecting to a TVPrecautions when connecting the antenna English-21 Power on and OFF ModesBasic Operation Information OSD Power IndicatorUsing Power Management Picture ModeEnglish-23 OSD On-Screen-Display ControlsEnglish-24 English-25 English-26 English-27 English-28 English-29 TV Tuner Scan ModeEnglish-30 Image Sticking of LCD PanelRecommendations Connect PC and LCD4020/LCD4620 English-31English-32 ConnectionEnglish-33 English-34 FeaturesTroubleshooting English-36 Specifications LCD4020Product Specifications English-37 Specifications LCD4620English-38 Pin AssignmentWeee Mark European Directive 2002/96/EC Manufacturer’s Recycling and Energy InformationEnergy Saving

4020, 4620 specifications

The NEC 4620 and NEC 4020 are significant models in the realm of telecommunications, particularly noted for their sophistication and capabilities in network management and communication systems. These systems have been crucial in advancing telecommunications infrastructure for businesses and organizations, delivering efficient solutions to manage calling patterns and other communication functions.

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