Dell 1201MP Projector Owners Manual
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www.dell.com | support.dell.com 64Contacting Dell U.K. (Bracknell) International Access Code:00 Country Code: 44 City Code: 1344Online Support support.euro.dell.com [email protected] Customer Service Online support.euro.dell.com/uk/en/ECare/form/home.asp Sales Home and Small Business Sales 0870 907 4000 Corporate/Public Sector Sales01344 860 456 Customer Service Home and Small Business 0870 906 0010 Corporate 01344 373 185 Preferred Accounts (500–5000 employees) 0870 906 0010 Global...
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69 Glossary ANSI Lumens—A standard for measuring light output, used for comparing projectors. 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. Backlit (Backlight)— Refers to a remote control, or a projector control panel, that has buttons and controls that are illuminated. Bandwidth— The number of cycles per second (Hertz) expressing the difference...
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www.dell.com | support.dell.com 70 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: 1Full On/Off — measures the ratio of the light output of an all white image (full on) and the light outpu t of an all black (full off) image. 2ANSI — measures a pattern of 16 alternating black and white rectangles. The average light output from the white rect angles is divided...