Owner`s manual

Installation
VideoWall™/CineWall™ Installer/Integrator Manual 37
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Input Levels – Analog RGB
Sources
Computer sources vary greatly from computer to computer and even between video
outputs on the same video card. Video sources vary more. Use the
Input Levels controls
to make the VideoWall/CineWall respond correctly to these non-standard sources.
What does Input Level do? For analog computer sources, adjusting to the computer’s
picture output means determining what that computer means by “black” and “white.”
Black is supposed to be a voltage of zero coming from the computer’s video card, but it
almost never is. White is supposed to be a voltage of 0.7 volts, but it usually isn’t either.
The Input Level adjustment process asks you to provide an all-white picture from the
computer. By doing so, you can quickly and automatically make the display “learn” what
this computer means by black and white. The result is good pictures, using all the
dynamic range of color coming from the computer.
Input Levels and Color Balance (described on page 34) do not
affect each other, but they both affect the final picture.
For best results, use a white field coming from the computer you
will use with the VideoWall/CineWall.
Note
Tip