GRASS VALLEY zodiak, Руководство пользователя

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Zodiak User Manual 337
Bus Linking
Examples
A typical use of Bus Linking is to have the buses of one M/E follow the
selections on another with a few source substitutions. For example, if
there's a special camera only used for the primary customer's feed, a
Linked bus used for a secondary customer’s feed might select a wide shot
whenever that camera was selected on the Controlling bus.
Another example is to prevent feedback when selecting a studio wide shot.
Many modern sets include monitors, and these will typically be fed from
an aux bus of the switcher with program output selected. When the wide
shot camera is selected on PGM-PST A bus, the camera might pick up the
monitor wall and generate video feedback. This can be prevented by asso-
ciating all source selections on PGM-PST A except the wide shot camera to
select PGM-PST A on the aux bus. The wide shot camera source is then
associated to an alternative graphics source on the aux bus appropriate to
the show.
Another possibility is to program the M/E 2 A row as an extension of the
PGM-PST A bus for shows that need instant access to more than 32 sources
without pressing the Shift button. In this case M/E 2 A is the Controlling
bus and PGM-PST A is the Linked bus. In this scenario, the easiest way to
set this up is to link the buses and map the sources one to one, then set the
shift preference for M/E 2 A to Shifted. An alternative method is to map
each source on M/E 2 A to a specific alternate source on PGM-PST A. Other
M/E 2 buses could be linked for additional extended selection. A third
alternative is to map all sources on M/E 2 A to select M/E 2 A on
PGM-PST A.
Bus Linking Operation
Once the Bus Linking associations have been established and enabled,
selecting a source on a Controlling bus that is associated with a source on a
Linked bus will make the Linked bus select its associated source. The fol-
lowing special operating rules apply.
Source Override
Holding down a source select button on a Linked bus prevents that bus
from changing its sources when Controlling bus source selections change.