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 emitted 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.

104

Glossary

Page 103 Page 105
Page 104
Image 104
Dell dell projector manual Appendix Glossary
Page 103 Page 105

dell projector specifications

Dell projectors are renowned for their exceptional performance, innovative technologies, and user-friendly features, making them a popular choice for both office and home environments. Engineered to deliver crystal-clear visuals and reliable functionality, these projectors cater to a wide range of needs, from business presentations to immersive home theater experiences.

One of the standout features of Dell projectors is their advanced image quality. Equipped with high lumens output, they ensure bright projections even in well-lit environments. This brightness, combined with high resolution capabilities—ranging from Full HD (1920x1080) to 4K (3840x2160) in select models—ensures sharp, vibrant images that captivate audiences. Additionally, many models incorporate advanced color technologies, which enhance color accuracy and deliver more dynamic visuals.

In terms of connectivity, Dell projectors are designed to be versatile. They typically offer multiple input options, including HDMI, VGA, and USB ports, making it easy to connect to a variety of devices such as laptops, tablets, and even smartphones. Some models also feature wireless connectivity, allowing users to connect without the hassle of cables, further enhancing their convenience.

Dell projectors also prioritize portability. Many models are lightweight and compact, making them easy to transport for on-the-go presentations or movie nights. The included carrying case enhances their portability, ensuring that users can easily take them from one location to another without the risk of damage.

Another notable characteristic of Dell projectors is their user-friendly interface. With intuitive controls and an easy-to-navigate menu, users can quickly adjust settings to optimize their viewing experience. Features such as automatic keystone correction ensure that images remain aligned, regardless of the projection angle, while various preset modes allow users to select the best settings for their specific environment or content type.

Finally, Dell's commitment to sustainability is evident in their projector designs. Many models include energy-efficient technologies that help reduce power consumption, extending the life of the lamp and lowering overall operating costs. This focus on efficiency is coupled with robust built-in security features, making Dell projectors a reliable choice for corporate settings.

In conclusion, Dell projectors are a blend of high performance, versatility, and usability, making them suitable for a broad audience, from professionals to home users. With their impressive features and technological advancements, they deliver outstanding projection experiences that stand out in any setting.
Top Page Image Contents