Barco Galaxy NH-12, User Manual

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7. Advanced
7. Press ↓ to pull down the menu
8. Use ↑ or ↓ to enable ( ON ) or to disable ( OFF ) Automatic Black level
Image 7-32
9. Press ENTER to con fi rm
A white bullet shows the active setting
Performing Black input balance
1. Select a black pattern (or gray scale as alternative)
2. Press MENU to activate the Tool bar
3. Press → to select the Image item
4. Press ↓ to Pull down the Image menu
5. Use ↑ or ↓ to select Input balance
6. Press → to pull down the menu
7. Use ↓ or ↑ to select Black level...
Image 7-33
8. Press ENTER
A dialog box is displayed
9. Adjust the red black level on a minimal value
Image 7-34
10.Adjust the blue black level to a minimal value
Note: this minimal value is not necessary , provided that the 2 other colors are not in fl uencing too much the color to be adjusted,
in fact the aim is to minimize the effect of the two other colors since there is a risk of reaching too soon the transition
(bright spots) due to the contribution of these two other colors signals.
11.Adjust the Green black level until bright spots appear on the black part of the image
12.Adjust the Blue black level until bright spots appear on the black part of the image
13.Adjust the Red black level until bright spots appear on the black part of the image
The projected image should now be noisy neutral grey.
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