![background image](http://html.mh-extra.com/html/barco/pfwu-51b/pfwu-51b_user-manual_474226053.webp)
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7.Image
Adjusting the input balance
To balance the three color signals of a particular source there are conditions; in fact we must know the black and the white
level of the source i.e.:
1. The source in question must be able to generate a white signal, ideally a 100% white (background) full screen pattern
2. The source in question must be able to generate a black signal, ideally a 100% black (background) full screen pattern
A
B
White balance : In the projector, we will set the contrast for each color until we get a 100% light output picture when
projecting a 100% white image (image A)
Black balance : In the projector, we will set the brightness for each color until we get a 0% light output picture when
projecting a 100% black image (image B).
The changeover from min to max is indicated by the apparition of bright spots also called “digital noise”
An alternative to a full screen White/black pattern is the standard gray scale pattern, the white bar will be
used for white balance and the black bar for black balance.