Grass Valley XtenDD v.4.2.4 - Manual (Page 89)

2. Panel Operation
2 – 60 Operating Instructions – Rev. 1 / 7.2002
2.8.4 LOCKING THE DIGIPOTS
To protect the actual control adjustments against accidental changes, the digipots
in all keyer groups can be locked.
For locking proceed as follows:
D
Simultaneously press the buttons Up/down in the Mattes group and turn one
of the digipots in a keyers group. The three digipots are locked.
D
For unlocking, press a delegation button in the respective group.