Dell 4210X manual Appendix Glossary

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Appendix: Glossary

ANSI LUMENS A standard for measuring the brightness. It is calculated by dividing a square meter image into nine equal rectangles, measuring the lux (or brightness) reading at the center of each rectangle, and averaging these nine points.

ASPECT RATIO The most popular aspect ratio is 4:3 (4 by 3). Early television and computer video formats are in a 4:3 aspect ratio, which means that the width of the image is 4/3 times the height.

Brightness — The amount of light emitting from a display or projection display or projection device. The brightness of projector is measured by ANSI lumens.

Color Temperature — The color appearance of white light. Low color temperature implies warmer (more yellow/red) light while high color temperature implies a colder (more blue) light. The standard unit for color temperature is Kelvin (K).

Component Video — A method of delivering quality video in a format that consists of the luminance signal and two separate chrominance signals and are defined as Y'Pb'Pr' for analog component and Y'Cb'Cr' for digital component. Component video is available on DVD players.

Composite Video — A video signal that combines the luma (brightness), chroma (color), burst (color reference), and sync (horizontal and vertical synchronizing signals) into a signal waveform carried on a single wire pair. There are three kind of formats, namely, NTSC, PAL and SECAM.

Compressed Resolution — If the input images are of higher resolution than the native resolution of the projector, the resulting image will be scaled to fit the native resolution of the projector. The nature of compression in a digital device means that some image content is lost.

Contrast Ratio — Range of light and dark values in a picture, or the ratio between their maximum and minimum values. There are two methods used by the projection industry to measure the ratio:

1 Full On/Off — measures the ratio of the light output of an all white image (full on) and the light output of an all black (full off) image.

2 ANSI — measures a pattern of 16 alternating black and white rectangles. The average light output from the white rectangles is divided by the average light output of the black rectangles to determine the ANSI contrast ratio.

Full On/Off contrast is always a larger number than ANSI contrast for the same projector.

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Contents User’s Guide December 2008 Rev. A00 Contents Adjusting the Projected Image Troubleshooting Your Projector Package Contents Your Dell ProjectorAbout Your Projector Your Dell Projector Connecting Your Projector Connecting to a Computer Monitor Loop-Through Connection Using VGA Cables Connecting a Computer Using an RS232 cable Connecting a DVD Player Connecting a DVD Player Using a Composite Video Cable Connecting a DVD Player Using a Component Video Cable Connecting a DVD Player Using an Hdmi Cable Connecting to Local Area Network 12V DC Plug Connection With Commercial RS232 Control Box Turning Your Projector On Using Your ProjectorTurning Your Projector Off Adjusting the Projected Image Raising the Projector HeightAdjusting the Projector Zoom and Focus Adjusting Projection Image Size Projector to screen distanceUsing the Control Panel On-screen display OSD is displayed Using Your Projector Using the Remote Control Presentation mode, Bright mode, Movie mode Using Your Projector Installing the Remote Control Batteries Press the tab to lift the battery compartment coverOperating Range With Remote Control Using the On-Screen Display AUTO-ADJUSTInput Select Picture in PC Mode Picture in Video Mode Display in PC Mode Using Your Projector Display in Video Mode Lamp Using Your Projector Network Information Using Your Projector Using Your Projector Using Your Projector Using Your Projector Using Your Projector Using Your Projector Configuring the Network Setting Managing the Projector From Web ManagementManaging Properties HomeNetwork Settings Projector Status and Control Using Your Projector Mail Alert Password Setting Login Firmware Update Using Your Projector Using Your Projector Tips Using Your Projector Troubleshooting Your Projector Problem Possible SolutionProblem Problem Problem Guiding Signals Amber OFFLamp failure Lamp is defective. Replace the lamp Changing the Lamp Troubleshooting Your Projector Specifications Specifications26286mm USB port One USB slave for remote support Command types RS232 Pin Assignment RS232 ProtocolResolution Compatibility Modes Analog/DigitalContacting Dell Visit support.dell.comAppendix Glossary GlossaryGlossary Glossary Index Hdmi Index