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WN-5230-S VideoWall User’s Guide
35
Input Level
When the black and white levels are correctly set, the display will know
what the absolute minimum and maximum signal amplitude is that the
source is sending to it. The procedure for Input Level adjustment, and
the menus for it, are different for computer sources and video sources.
You must adjust input level for each source that is connected to the
display. Even if two similar sources are being used, such as two
different SVGA sources, the input levels must be adjusted for the
source that is connected at this time. When the other SVGA source is
connected, the levels must be readjusted to match the new source. If
the sources are connected to different inputs (SVGA, MAC, RGBS)
then each source’s Level can be set and saved separately in memory,
because there is a different memory for each source-mode
combination.
For all sources except composite and S-video, the input
Black Level must be adjusted to match the source before
adjusting the input White Level.
Note: Do not use Black Level Adjust and White Level Adjust to color
balance the displays. Matching the displays so they all produce the
same colors is done in a later step called Color Balance. Color Balance
and Level Adjust are entirely independent of each other. Level Adjust
must be done with external video signals. Color Balance should be
done with internally generated patterns.