Grass Valley DD35 Family v.3.1.5 - Manual (Page 185)

3. Menu Operation DD35 Production Switcher
3 – 33 Operating Instructions – Rev. 16 / 10.2001
3.6.1.2 Function Buttons
For details refer to section Introduction.
The basic operation mode of M/E can be selected with the buttons M/E Mode.
Layered:
Press the associated button to switch over to Layer mode for the individual mixing
levels. In Layer mode, background A and background B become independent from
each other with each background bus functioning as a key bus.The background is
black.
The PVW path is used to create a B/W key signal which unites the currently active
layers. If, for instance, in the DSK a mixing level in Layer mode is selected as fill
signal, this key signal will automatically be used as key transition signal. The keyer
should be switched to Linear.
Key3:
Press the associated button to delegate the third keyer to the respective mixing lev-
els M/Ex. In this mode, the Mask Bus button in the respective keyers menu is dis-
abled.
VRSet:
Press the associated button to select the Virtual Set Mode.
Note: The Virtual Set Mode is a software option!
Virtual Set Mode:
In Virtual Set applications an important function is, to put a live scene on a computer
generated background by using a chroma key.
With the Virtual Set Mode one M/E of the DD35 is configured such, that it generates
two different chroma keys on top of two different backgrounds.
DD35 M/E
Chroma Key
Mix
Chroma Key
Mix
PGM
PVW
Key A
BGND A
Key B
BGND B
Delegate
M/E Mode