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6. Controlling and managing an OVD/KVD/IVD display wall
6.5
Contrast
Contrast can be set on the entire wall only, not on an individual display.
The CONTRAST control panel offers two sliders, one for black level and one for white level. The Black Level and
White Level are used to adjust levels of video signals.
Increase the black level to achieve better visibility in dark areas of images, lower it down to achieve more satu-
ration of colors.
Increase the white level in case the video signal doesn’t utilize the full dynamic range to achieve more bright-
ness
After pushing the sliders the settings need to be constant for 5 seconds before adjustment to the set value is
triggered. The adjustment procedure is also triggered when navigating to this page or when refreshing (F5) the
content of this page.
It takes some time until the displays and all properties are updated.
Display properties are being polled by the server from the display at constant rate in the
background. This takes around 20 -25 secs until all displays and all properties are updated.
Refreshing a browser window e.g. by pressing F5 will not shorten this time since it will not
trigger a polling cycle.
Barco - Barco Wall Control Manager OVD/KVD/IVD - R591337 - user manual - Revision 04 - March-2016
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