Internal Black Level; Black Level : Double Brightness Compensation - Barco Galaxy NH-12 User Manual

channel 1
Image 7-206

Black level : double brightness compensation

It is worth noting however, that (internal) black level (via the dialog box) is to be used for simple linear soft
edge zones (like in the illustration above). Curved soft edge zone should be done using (external) beta planes.
The D-drive of the projector can only save 8 MB of compressed data of which approximately 2 MB is used for
image files, geometry files, factory backup data. This means that the total size of Alpha plane and Beta plane
should be less than 6 MB
The Black level adjustment has to be done for all the channels (projectors)
7.9.9.5.2

Internal black level

What can be done ?
Internal black level can be adjusted via the projector's software using a dialog box. The dialog box allows to add an offset to the
black level of the image in the zones outside the soft edge zones. The range goes from 0 to 255.
How to adjust the internal black level ?
1. Press the MENU key to activate the Tool bar.
2. Push the cursor key ← or → to highlight Display setup
3. Push the ↓ key to pull down the menu.
4. Push ↓or ↑ to select Soft edge and alpha beta planes
R59770122 BARCO GALAXY NH-12 04/05/2011
Overlap zone (double brightness)
channel 1&2
pulled up
channel 1
7. Advanced
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