Grass Valley XtenDD v.4.2.4 - Manual (Page 323)

3. Menu Operation
3 – 176 Operating Instructions – Rev. 1 / 7.2002
Page Global Channel
The global channel should be set to ”used” if you need:
D
the cube/slab builder
D
priority settings other than Z–priority
D
global 3D–control of more than one channel
If you decide to use the DVx like you would use an external DVE – just as one device
– your choice will always be ”used”.