Grass Valley DD35 Family v.3.1.5 - Manual (Page 280)

3. Menu Operation DD35 Production Switcher
3 – 128 Operating Instructions – Rev. 16 / 10.2001
For details refer to section Introduction.
Selecting the the requested Texture Source.
After selection the controls above change to the respective mode:
Texture Source = Key Texture Source = Pattern
Shows basic pattern
even of User Wipes
Selecting freeze mode for the Texture Store.
Selecting the respective field or frame for readout:
Menu Lock
Texture Source
Freeze
Readout