Dell 7609WU manual DVI-D- Digital Visual Interface-Digital connector

dB— decibel—A unit used to express relative difference in power or intensity, usually between two acoustic or electric signals, equal to ten times the common logarithm of the ratio of the two levels.

Diagonal Screen— A method of measuring the size of a screen or a projected image. It measures from one corner to the opposite corner. A 9FT high, 12FT wide, screen has a diagonal of 15FT. This document assumes that the diagonal dimensions are for the traditional 4:3 ratio of a computer image as per the example above.

DisplayPort— A digital display interface standard developed by the Video Electronics Standards Association (VESA). DisplayPort is designed for broad application in PCs, monitors, TV displays, projectors, and other sources of display content.

DLP®— Digital Light Processing™—Reflective display technology developed by Texas Instruments, using small manipulated mirrors. Light passing through a color filter is sent to the DLP mirrors which arrange the RGB colors into a picture projected onto the screen, also known as DMD.

DMD— digital Micro- Mirror Device— Each DMD consists of thousands of tilting, microscopic aluminum alloy mirrors mounted on a hidden yoke.

DVI-D—Digital Visual Interface-Digital connector.

Focal Length— The distance from the surface of a lens to its focal point.

Frequency— It is the rate of repetition in cycles per seconds of electrical signals. Measured in Hz (Hertz).

HDMI— High Definition Multimedia Interface— A digital interface for audio and video signals designed as a single-cable solution for home theater and consumer electronics equipment.

Hz (Hertz)— Unit of frequency.

Keystone Correction— Device that will correct an image of the distortion (usually a wide-top narrow-bottom effect) of a projected image caused by an improper projector to screen angle.

Maximum Distance— The maximum distance from a screen the projector can be to cast an image that is usable (bright enough) in a fully darkened room.

Maximum Image Size— The largest image a projector can throw in a darkened room. This is usually limited by the focal range of the optics.

Minimum Distance— The closest position at which a projector can focus an image onto a screen.

NTSC— National Television Standards Committee. North American standard for video and broadcasting, with a video format of 525 lines at 30 frames per second.

Glossary

58