NEC Comprehensive Guide to MT830 Projector Communication Protocol and Cable Connection

Page 47

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

Err 1 8X (Apply the corresponding bit.)

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

Bit 1: Fan stoppage

Bit 2: Overheated

Bit 3: Lamp lighting failure

PC Control Connector (DIN-8P)

To RxD of PC

▶

	8	7	6
		7
5		4	3

To GND of PC

◀

To TxD of PC

▶

E-46

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Contents MultiSync MT830/1030 MultiSync MT830/MT1030 LCD Projector Important Information InstallationPower Supply CleaningFire and Shock Precautions Lamp ReplacementTable of Contents Introduction Features you’ll enjoyWhat’s In The Box? How Do You Get Started?Right Side Features Left Side Features Front FeaturesRear Features Top Features Video Input Terminal Panel FeaturesRGB Monitor Output Connector Mini D-Sub 15 pin RGB Input 1 Connector Mini D-Sub 15 pinMouse Output Port RGB Input 2 Connector Mini D-Sub 15 pinRemote Control Jack PC Control PortRemote Control Features Mouse Pad /+ Right Click/Cancel ButtonVolume Button Laser ButtonKeystone Button Remote Control PrecautionsSlide Button Magnify ButtonSetting Up Your MultiSync MT830/ 1030 LCD Projector InstallationScreen Using a Tabletop Or CartFormulas mm Distance ChartStandard Zoom Lens Tele Standard Zoom Lens WideCeiling Installation 10.5 12.2 14.0 516 578 639 701 824 1009 1194 1317 1563 1748 193220.3 22.7 25.2 27.6 32.4 39.7 47.0 51.8 61.5 68.8 76.1 135 179 208 267 311 355Rear Screen Projection Reflecting The ImagePin adapter for Macintosh supplied Wiring DiagramProjector Mouse adapter For IBM PS/2Fixed mode /1024×768 Connecting Your PC Or Macintosh ComputerSettings for Monitor Mode Settings for Macintosh Adapter Examples of DIP switch settingMacintosh Changing Video ResolutionsWindows Connecting Your Computer to the Mouse Output Port Connecting Your Document CameraConnecting Your VCR Or Laser Disc Player Connecting An External MonitorOperation Using The Menus Video Menu Descriptions & FunctionsSource Menu Keystone Image Adjustment MenuVolume Image ModePicture Adjustment when Auto Mode is off Auto ModeHorizontal Positionwhen Auto Mode is off Vertical Positionwhen Auto Mode is offAuto Start Power MenuPower Management Lamp UsageBackground Settings MenuCapture with the optional viewer board installed only ResetUsing the Viewer function Multi Cursor Projecting SlidesTable Cursor Selecting a File from a List of FilesSelecting a Slide from a List of Slides Table Projecting Pictures a Digital Camera Took Switching SlidesEffect Sound Step MaintenanceReplacing The Lamp To replace the lampRemote Control Battery Installation Cleaning Or Replacing The FilterStatus Light Messages TroubleshootingImage is scrolling vertically Common Problems & SolutionsWhen using the Viewer function Cross color in RGB modeMechanical SpecificationsOptical Electrical378.0 Cabinet DimensionsRed Green Blue Pin No Signal to be connectedSub Pin Assignments Timing Chart Function Code Data Description PC Control Command Reference Command CodesCable Connection Communication Protocol PC Control Connector DIN-8P78409731