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3.2 Adjusting Each Margay To Its Source
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3.2 Adjusting Each Margay To Its Source
The source picture—from computer, video, DVD—is not always perfect in its size or strength; it does
not always conform exactly to a standard. Margay has a way to compensate for this.
Computer sources vary quite a bit from computer to
computer. They even vary between video outputs on
the same video card. Video sources vary more.
To make the Margay respond correctly to these
non-standard sources we adjust Input Levels.
• Input Levels for computer sources, analog, see
page 44
• Input Levels for computer sources, digital, see
page 48
• Input Levels for video sources, page 50
How does Input Level relate to Color Balance
To make all the displays show the same color and
brightness across the whole wall, you need to adjust
input levels and do color balancing.
You can do Input Levels first, or you can do Color
Balance first. It doesn’t matter. But they must both be
done.
Input Levels and Color Balance do not affect each
other, but they both affect the final picture.
• Color Balancing the displays, page 52
What does Input Level do?
For analog computer sources adjusting to the com-
puter’s picture output means finding what that com-
puter 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 a picture from the computer that is black,
then one that is pure white. With these, you can
quickly and automatically make the display “learn”
what this computer means by black and white.
The result? Good pictures, using all the dynamic
range of color coming from the computer.
For Input Levels, you must use black and white coming
from the computer you will use for the program. You
don’t make this adjustment with your work laptop and
then switch to another computer for the display’s
program of pictures.
What does Color Balance do?
Color balancing adjusts all the displays in a wall so
they produce the same colors across the entire wall.
Displays differ from one another because of very
small differences in the color of the light produced by
the lamp and by differences in the dyes used to make
the color in a DLP™ optical engine.
In color balancing you use the display’s internal
test patterns of white, first, then gray. The internal
pattern assures that a pure white is used.
Selecting the source
1. Press
MENU on the remote.
2. Select
PICTURE and press ENTER.
3. Select
SOURCE and press the lEFT ARROW key.
4. Choose the source you want and press
ENTER.
5. Press
MENU again to close all menus.