WN-5230-S VideoWall User’s Guide

is having to the overall image. Then back off to fine tune. This helps to give an intuitive feel for the color balance process.

It is often helpful to switch between the internal white and gray patterns and actual video images to fine tune the system. Avoid making major changes when adjusting to the video images because this can throw off the white or gray balance. Remember also that the Input Level adjustment has a large effect on color. If Input Level adjustments have not been made, color balance for live video will be difficult. However, you may adjust Color Balance before or after you do the Input Level adjustment. They do not affect each other – that is, an adjustment in Color Balance does not affect the Input Level adjustment, and vice versa – but they must both be adjusted properly for the screens in the cube to match in color, luminance and black level.

Do not adjust Color Balance with Red, Green and Blue test patterns. This is a method sometimes used with CRT displays, and it will not work with these Clarity displays. The primary colors have been matched at the factory. If you get the whites and grays to be the same over a whole wall, all the other colors will be the same, too.

After you have color balanced all the units, save the settings for each unit. It does not matter which source-mode combination you save, because color balance data is saved once for all sources and modes. You should not have to color balance the displays again until you change a lamp. However, lamps near the end of their life may begin to change color, so it is a good idea to check color balance occasionally.

Note: Setting the Gray color balance levels near 004 or 003 will often give improved performance when the primary program source is composite or S-video. To try this, reduce the overall brightness of the gray baseline cube to these levels in the Gry column. Adjust this baseline cube to have the least amount of color in the 50% gray field. Then balance the other cubes to this one.

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Clarity WN=5230-S manual WN-5230-S VideoWall User’s Guide