Chapter 7
VSM Pro User Guide 38
Configure a Black Level Cutoff Value
Adjusting the video black level can enhance the appearance of your LED video output. A pure
black tone, as it appears in the video input, may not match what appears on your LED display.
For example, dark colors, which look correct on your media server, may appear lighter on the
LED display. This occurs because the LED lights are still receiving light output values that equal a
small amount of light.
As needed, you can set a cutoff value, which changes all values to black after a certain threshold.
For example, setting a black level value of 3 converts all light output values of 3 or less to 0,
creating black output.
Use the following steps to configure a black level cutoff value:
1.
From the User Interface main menu, select the
Gamma Correction
menu
2.
Enter a new black level value (0
–
255). By default, the black level value is 0
3.
Select
Update
to make the change
Configure a White Level Cutoff Value
Similar to black level adjustment, but used less frequently, you can create a white level cutoff. On
a scale of 0 – 255, pure white output equals 255. If white areas of video output appear too dark,
you can create a cutoff. For example, if you set a cutoff value of 252, any light output value
equaling 252 or greater is converted to 255, maximum output. In effect, you can control
contrast using the white level setting.
Use the following steps to configure a white level cutoff value:
1.
From the User Interface main menu, select the
Gamma Correction
menu
2.
Enter a new white level value (0
–
255). By default, the white level value is 255 (maximum
output)
3.
Select
Update
to make the change
Note:
Use the minimum necessary black level and white level adjustment, as RGB colors
can be affected.
