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44 Barco - RHDM-2301 - User manual
How to
3.5 How to visualize the dark levels
The dark levels are accessible with the background control
on the image adjustments knobs.
The background control can be changed between -127 and 128 and is set to 0 by default. The unit
of the values of the background control is expressed as a number of levels (in 8-bit steps).
Figure 14: Location of the background adjustment control
By increasing the value of the background, the information in the footroom of the video signal
(below 0% video signal) becomes visible.
Video signal
L
C
D
d
r
i
v
e
Black
0 %
White
100 %
Black
offset
clipping
bright levels
100 %
clipping
dark levels
Visualize
super bright
Visualize
super dark
+
-