Grass Valley Karrera Video Production Center v.4.0 - Manual (Page 251)

KARRERA — User Manual 251
Additive Keyers
From the Menu
Additive Key and Super Add buttons are provided in the menu for Fixed and
Adjusted Linear and Luma keys so you can override the video shape
selected in the Source Definition menu (changes from Auto to On or Off)
for that source.
In the menu, the Additive Key button is located in the Keyer, Mode menu
( Figure 131 ).
Figure 131. Keyer, Mode Menu—Additive Key
Note Selecting or re-selecting any Keyer Mode button (Fixed Linear, Adj Linear,
or Luma Key) will reset the shape type to “Auto”, i.e. as defined in the Source
Definition menu.
1. Touch the desired Key.
2. In the Keyer Mode pane, touch the Fixed Linear , Adj Linear , or Luma Key
buttons if not already selected.
3. Touch the Additive Key button to turn it to On (illuminates green).
4. Touch the Additive Key button again to turn it Off.
The key will remain in the selected On/Off state.