THOMSON Grass Valley Kalypso Classic, Справочное руководство

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80 Kalypso Reference Manual
Section 2 — Control Panels
when it has been selected. The
Preset Black
button is unique, in that its func-
tion is activated on the release of its button press, not on first press as are
all other buttons. This is necessary to support fade to black.
Two successive transition commands (
Auto Trans
button,
Cut
button, or
Tran-
sition Lever Arm
action) are used for a complete preset black transition. The
first command transitions the M/E to black (first stage). When in black,
both the A and B bus selections will go low tally. The second command
transitions from black to the final stage, completing the preset black transi-
tion. The preset black function is canceled automatically at the end of the
second transition.
The transition type can be changed when the M/E has reached its first
preset black stage, allowing for example a wipe to and a mix from preset
black. While in preset black, the key ON indicators report the states the
keys will have when the second transition command completes. The keys
involved can be changed at this time, if desired. The source on the B (or
PST) bus can also be changed while in the preset black stage.
A preset black transition can be canceled by pressing the
Preset Black
button
a second time. If cancelled while at the preset black stage, the system will
switch back the original signal. Pressing a source button on the A (or PGM)
bus will also cancel a preset black transition. The source pressed on the A
bus will immediately be placed on air without any keys, even if the next
transition had specified key changes.
Transition Preview
The transition preview feature allows a main transition to be previewed
without affecting the program output of that M/E. A transition preview
cannot be performed if the
Transition Lever Arm
or main transition is off limit,
if an auto transition is in progress, or when
Preset Black
has been selected.
Pressing Trans PVW routes the main transition video to preview output and
disables program transitions on that M/E, leaving the existing program
output unchanged.
Pressing
Auto Trans
or moving the
Transition Lever Arm
with
Trans PVW
active
will show the transition only on preview, allowing the setting of wipe
parameters or adjusting auto transition times before actually performing
that transition. Transition preview overrides whatever preview mode is
currently selected. The dedicated preview monitor of that M/E (if any) and
the system’s switched preview output will display the transition preview.
At the end of this transition, transition preview can be automatically deac-
tivated (depending on a user preference configuration setting).
Transition preview may be canceled at any time by pressing the lit
Trans PVW
button. If an auto transition preview is in progress, it will be aborted. If the
transition lever arm was used for the transition preview, cancelling the
preview part way through will leave the arm off limit (see
Other Transition
Control Interactions on page 82 ).