Unicorn Digital Timepiece, Руководство пользователя, Страница: 57 / 101

S T R I P I N G T I M E C O D E
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track. When the Digital Timepiece reaches the end
of the original SMPTE track, it will begin striping
on its own.
REGENERATION AND TIME CODE BITS
The Digital Timepiece always regenerates fresh
time code from its SMPTE out jack. Time code user
bits embedded in incoming LTC on its SMPTE
input are not preserved.
RECORDING VITC
To record VITC and other optional graphics, a
source video signal is fed
through the Digital
Timepiece into a recording VTR. The Digital
Timepiece adds the VITC (and a burn-in window
or other graphics, if desired) as the video signal
passes through.
The Digital Timepiece generates VITC lines in its
video output whenever it is generating its own time
code or converting external time code.
Setting up the hardware
To set up your hardware, connect two VTRs to the
Digital Timepiece as shown in Figure 7-1 on
page 55. Make sure that the VTR doing the
recording is set to SP (Standard Play) mode instead
of EP (Extended Play) mode. VITC does not record
well in EP mode.
Choosing a video time base mode
On the front panel of the Digital Timepiece, choose
one of the video time base modes shown below,
depending on what you would like to use as a
SMPTE address source.
Choosing a start time
If you chose an external source (MTC, LTC, VITC,
or SONY 9-pin), the Digital Timepiece looks for
the first frame of incoming time code to determine
at which frame time it will start.
If you chose Video/Internal , set the SMPTE start
frame in the main counter of the MMC controller
that you have set up to control the Digital
Timepiece (ClockWorks, a MMC compatible
sequencer or other software program, or a
hardware MMC controller) to cue the Digital
Timepiece to the desired SMPTE start time.
Initiating time code generation
If you chose an external source (MTC, LTC, VITC,
or SONY 9-pin), the Digital Timepiece looks for
the first frame of incoming time code to begin
generating. It then generates on its own, frame-
locked to video, according to the first frame of
external time code that it received. So to begin, just
roll your external time code source.
If you chose Video/Internal , you can initiate the
generation of VITC by one of the following
methods:
■
Press the play button in ClockWorks’ main
transport controls.
■
Press play on your MMC controller, sequencer
or other transport device that you are using to
control the Digital Timepiece.
■
Press the STRIPE button on the front panel of
the Digital Timepiece. This always starts at zero
hours, minutes, seconds and frames (0:00:00:00).
(This only works when the Digital Timepiece is in
an
Internal time base mode).
Stopping
Regardless of how you initiated time code
generation, you can stop time code generation by
doing one of the following:
Time Base mode SMPTE address source
Video/Internal Digital Timepiece
Video/MTC MIDI Time Code
Video/LTC LTC
Video/VITC VITC
Video/Sony SONY 9-pin