Grass Valley Zodiak v.6.0 Mar 15 2006 - Manual (Page 48)

48 Zodiak — User Manual
Section 2 — Concepts
ator commands to complete. Preset Black can be used with any transition
type (cut, mix, or wipe). The entire picture goes to black, even if all the tran-
sition elements involved in the picture were not selected.
Fade to Black
The Fade to Black control in the DSK allows the Program output of the
switcher to be brought down to black at a predetermined transition rate.
Transition Rate
Cut transitions are instantaneous, but mix and wipe transitions have dura-
tions. Transition durations can be set in advance to a specific transition
rate, and be initiated by pressing a button the control panel. It is also pos-
sible to manually control transitions using a lever arm.
On the Zodiak system, one transition rate can be assigned to the main tran-
sition of each M/E. This type of transition can be controlled by that M/E’s
lever arm. Each of the four keyers on each M/E can also be assigned its
own transition rate, initiated with a separate Key Mix button on that M/E.
Flip Flop Background Buses
At the completion of a transition, the background buses swap their source
selections (flip flop). This makes the upper bus always act as the on-air bus,
and the lower bus act as a preset bus. The operator can reliably setup the
next source on the lower bus without disturbing the source selected on the
on-air upper bus.
For example, if a transition begins with source 1 on Background A and goes
to source 2 on Background B, as soon at the transition to source 2 com-
pletes, source 2 will be taken to the Background A bus (without disturbing
the output of that M/E). The source 1 selection will also be immediately
taken to the Background B bus.
Look Ahead Preview
If a preview monitor is configured for Look Ahead Preview mode, the end
result of the upcoming transition can be viewed on that monitor. This lets
the operator know in advance what will occur for that next transition. The
mode you select for each preview monitor depends on the number of mon-
itors available and the individual requirements of the facility.