Alcorn Mcbride V+ series, Руководство пользователя

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WinScript User’s Guide
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Changing the Timeline View
Change the amount of time displayed by clicking on the zoom in or zoom
out buttons. When in Timecode Chase Mode, clicking on the
button will alter the times to reflect the true time of the events. Click
the button to view the timeline in frames.
Chasing Timecode with Sequences
When used in conjunction with an Alcorn McBride SMPTE Machine,
sequences have the ability to chase SMPTE or EBU timecode. Since this is a
completely different approach to using sequences, their behavior differs from
the default time behavior. Let’s go over these differences, and learn how to use
these methods to control sequences.
In the default mode of operation (meaning no timecode chasing), a sequence
begins incrementing its frame clock and executing events the instant that it is
started. However, with timecode chasing, starting a sequence does not
necessarily mean that it will begin executing. Instead, initiating a Start sequence
event is more like ‘arming’ or ‘activating’ the sequence. No events will
actually be processed until the timecode has exceeded the sequence’s
Start
Time
. Once this point has been reached, the timecode will control the rate at
which the frame counter increments. In fact, the current frame is calculated just
like this:
(Timecode)
– (Sequence Start Time) = (Current Frame to Execute)
Example: 1:00:01.16 – 1:00:00.00 = 00:01.16
Now, what happens if the timecode doesn’t increment normally? What if it
skips backwards or forwards? How will the sequence react? Well, that’s the
tricky part! For that reason, we’ve added a few options to give you control of
these situations.
Dropout Tolerance
The SMPTE Configuration box, which can be found in the menu by clicking
Configuration | SMPTE, contains the setting RS-232 Dropout Tolerance.
This setting specifies the number of frames that can be skipped, missed, or lost
in a black hole before the show controller determines that a timecode jump has
taken place. Detecting a jump in the timecode is the first step in determining
when to take action.