Owner's Manual
Page 70
...ratio: 1 Full On/Off - DLP-Digital Light Processing - Focal Length-The distance from one corner to its focal point. Light passes through a color filter is the rate of repetition in cycles per the example above. measures the ratio of the light output of an all white image (full on... a hidden yoke. See Frequency. www.dell.com | support.dell.com Contrast Ratio-Range of light and dark values in a picture, or the ratio between digital devices such as projectors and personal computers....
...ratio: 1 Full On/Off - DLP-Digital Light Processing - Focal Length-The distance from one corner to its focal point. Light passes through a color filter is the rate of repetition in cycles per the example above. measures the ratio of the light output of an all white image (full on... a hidden yoke. See Frequency. www.dell.com | support.dell.com Contrast Ratio-Range of light and dark values in a picture, or the ratio between digital devices such as projectors and personal computers....