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.

Glossary

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Dell 1209S manual Appendix Glossary
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1209S specifications

The Dell 1209S is a compact and versatile projector designed to meet the needs of both business professionals and educational institutions. Known for its portability and high-quality projection capabilities, the Dell 1209S stands out as an excellent choice for presentations and classrooms alike.

One of the main features of the Dell 1209S is its impressive brightness capability, delivering up to 2700 ANSI lumens. This ensures that images and presentations remain clear and visible even in well-lit environments. Coupled with a high contrast ratio of 4000:1, the projector provides sharp and vibrant colors, enhancing the viewing experience and making it easier for audiences to engage with the content.

The Dell 1209S utilizes DLP (Digital Light Processing) technology, which is known for its reliability and longevity. DLP projectors are less prone to image degradation over time compared to other types. This technology features a spinning color wheel and micro mirrors that help produce crisp images with smooth motion handling, making it suitable for displaying everything from slideshows to videos.

Portability is a key characteristic of the 1209S. Weighing only about 5.5 pounds and featuring a compact design, it's easy to transport from one location to another. This makes it an ideal companion for business trips, outdoor presentations, or any situation where space and weight are considerations.

Connectivity options abound in the Dell 1209S, including HDMI, VGA, and composite video ports. This versatility means users can easily connect a wide variety of devices, such as laptops, DVD players, and document cameras. Additionally, the projector supports multiple aspect ratios, including 4:3 and 16:9, which allows users to adapt their presentations to different formats with ease.

Another noteworthy feature is the long lamp life, which can extend up to 10,000 hours in eco mode. This not only reduces maintenance costs but also significantly decreases downtime, allowing users to focus on delivering content rather than worrying about replacing bulbs frequently.

In summary, the Dell 1209S is packed with features that make it an excellent choice for anyone seeking a reliable, high-quality projector. Its powerful brightness, DLP technology, portability, diverse connectivity options, and long-lasting lamp life combine to create a versatile tool that delivers impressive performance in various settings. Whether for business or education, the 1209S meets the demands of modern presentation needs efficiently.
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