NEC MT 1020G /820G Cable Connection Communication Protocol, PC Control Connector DIN-8P

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Cable Connection

Communication Protocol

Baud rate:	9600 bps
Data length:	8 bits
Parity:	No parity
Stop bit:	One bit
X on/off:	None
Communications	Full duplex
procedure:

If the CPU of the LCD projector has received the data correctly, it returns an ACK(C5H). If the received data is not correct, the CPU returns a NAK(CAH), then the following status:

Receiving success:	C5
Receiving failure:	CA Err
Err 01:	Command Error (command not supported)
Err 02:	Checksum Error
Err 03:	Busy (command not acceptable)
Err 04:	Parameter Error ( parameter data abnormal)

NOTE: If failing in powering-on, the CPU returns the following NAKs:

CA Err 1

PC Control Connector (DIN-8P)

To RxD of PC

♣

Err 1 8X (Apply the corresponding bit.)

	Bit 0: Either filter panel or lamp cover is not	8	7	6
	attached correctly

	Bit 1: Fan stoppage	5	4	3
	Bit 2: Overheated

	Bit 3: Lamp lighting failure		2	1

To GND of PC

◀

To TxD of PC

♣

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Contents MultiSync MT 1020G /820G LCD Projector User’s Manual Precautions Power Supply InstallationCleaning Lamp ReplacementB L E O F C O N T E N T S N T R O D U C T I O N Features you’ll enjoy includeWhat’s In The Box? How Do You Get Started?Rear Features Front FeaturesRight Side Features Left Side Features Top Features Terminal Panel Features 7RGB Input 2 Connector Mini D-Sub 15 pin 6RGB Input 1 Connector D-Sub 15 pin9RGB Monitor Output Connector Mini D-Sub 15 pin RGB 1 Audio Input Mini JackRemote Control Features Remote Control Precautions Setting Up Your MultiSync MT1020G/820G LCD Projector InstallationUsing the Supplied Lift Kit Side view Using a Tabletop Or CartReflecting The Image Ceiling InstallationRear Screen Projection Wiring Diagram Connecting Your PC Or Macintosh Computer Macintosh WindowsConnecting Your VCR Or Laser Disc Player Connecting Your Document CameraConnecting An External Monitor Connecting Your Remote Mouse Receiver Remote Mouse Receiver as a mouse for your computer P E R a T I O N Using The Menus Menu Descriptions & Functions Picture Adjustment** when Auto Picture is off Image ModeFine Picture** when Auto Picture is off Power MenuCustom Memory Settings MenuImage Loop BackgroundLanguage ResetReplacing The Lamp A I N T E N a N C ETo replace the lamp StepRemote Control Battery Installation Cleaning Or Replacing The FilterStatus Light Messages TroubleshootingProblem Check These Items Common Problems & SolutionsOptical Specification SElectrical MechanicalDimensions PC 15-Pin mini D-Sub Macintosh 15-Pin D-Sub Sub Pin AssignmentsPC 15-Pin mini D-Sub Yes/No Signal Resolution Refresh Dot Rate Hz KHz ClkMHz Timing ChartFunction Code Data Description PC Control Command Reference Command CodesCable Connection Communication Protocol PC Control Connector DIN-8P