Knoll Systems HD225 user manual Optimizing video images, Using the menus

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Optimizing video images

After the video device is connected properly and the image is on the screen, you can optimize the image using the onscreen menus. For general information on using the menus, see page 17.

•Adjust the Keystone, Contrast, Brightness, Color, or Tint in the Picture menu. See page 18.

•Change the Aspect ratio. Aspect ratio is the ratio of the image width to image height. TV screens are usually 1.33:1, also known as 4:3. HDTV and most DVDs are 1.78:1, or 16:9. Choose the option that best fits your input source. See page 18.

•Select a Sharpness setting. See page 20.

•Select a different Color Temperature or use the Color Control to adjust the gain and offset of the red, green, and blue color. See page 20.

•Select a specific Gamma or Color Space. See pages 19 and 20.

•Turn Overscan on to remove noise

around the video image. See page 19.

Using the menus

To open the menus, press the Menu button on the keypad or remote. (The menus automatically close after 60 seconds, if no buttons are pressed.) The Main menu appears. Use the arrow buttons to move up and down to highlight the desired submenu, then press the Select button.

To change a menu setting, highlight it, press Select, then use the up and down arrow buttons to adjust the value, select an option using radio buttons, or turn the feature on or off using check boxes. Press Select to confirm your changes. Use the arrows to navigate to another setting. When your adjustments are complete, navigate to Exit, then press Select to go to the previous menu; press the Menu button at any time to close the menus.

Dots appear before the menu name. The number of dots indicate the menu’s level, ranging from one (the Main menu) to four (the most nested menus).

The menus are grouped by usage:

•The Picture menu provides image adjustments.

•The Settings menu provides set-up type adjustments that are not changed often.

•The About menu provides a read-only display of information about the projector and source.

Certain menu items may be grayed out until a particular source is connected. For example, Sharpness is only available for video sources and will be hidden when a computer source is active. Other menu items may be grayed out when they are not available. For example, Brightness is grayed out until an image is active.