User manual OPTOMA HD80

[. . . ] Do not let objects or liquids enter the projector ­as they may touch dangerous voltage points or short-out parts that could result in a fire or electric shock. The projector should not be adjusted or repaired by anyone except properly qualified service personnel. Please follow all warnings, precautions and maintenance as recommended in this user's guide. Warning Warning Warning Warning Warning WarningDo not look into the projector's lens when the lamp is on. [. . . ] There are two ways for you to control the functions: Control Panel and Remote Control. Control the degree of difference between the lightest and darkest parts of the picture. After the initial setup and fine tuning is completed, utilize the Gamma Adjustment steps to optimize your image output. Choose "On" to mask off a few pixels on each edge of the image to be displayed. Use Edge Mask "On" if image source happens to have encoding error near any edge of the displayable image. Use this function to adjust if image source happens to have noise near any edge of the display image. Part of the original image will be lost if the image aspect ratio is less than 2. Press "DVI" to choose Analog and Digital Signal source from DVI connector. The Projector has multilingual On-screen Display menus that allow you to make image adjustments and change a variety of settings. Keys to select any item in the Projector will automatically save the new settings. "Image mode-->TV" will support automatically "Overscan" with step "2" as default. The contrast controls the degree of difference between the lightest and darkest parts of the picture. Adjusting the contrast changes the amount of black and white in the image. After the initial setup and fine tuning is completed, utilize the Gamma Adjustment steps to optimize your image output. This allows you to choose a degamma table that has been fine-tuned to bring out the best image quality for the input. This adjustable item utilizes a new color-processing algorithm and enhancements to enable the picture's vividness to be significantly increased. "B/W Extension" can't support when source is HDMI, analog or digital RGB via DVI port. (0:Off) Black and White Extension can stretch the black and white levels to automatically increase the contrast of input image. Pre-set modes that allow the user to switch among the pre-sets to obtain different image effects. At cold temperature, the screen looks colder; at warm temperature, the screen looks warmer. 1) For User mode adjustment, put cursor on "User", and press "Enter" to select this adjustment item. Native: This format displays the original image without any scalDisplay area Picture area Some Letter-Box DVDs are not enhanced for 16x9 TVs. [. . . ] This device has been tested and found to comply with the limits for a Class B digital device pursuant to Part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This device generates, uses, and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. [. . . ]