Vertical Interval Data; Tbc Technical Information - Videonics MXPro User Manual

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Videonics MXPro User Guide
V I
ERTICAL NTERVAL
TBC T
ECHNICAL
D
ATA
Time code, closed captioning, and other data in the vertical interval should be added
after mixing (downstream from MXPro). This is necessary because dissolves and other
transitions mix the data signals, making them unreadable. The MXPro might remove
vertical interval data from the sources, depending on how data has been added and
the accuracy of a source's time base.
I
NFORMATION
The following information might be useful to video technicians.
• MXPro's TBC has no control options. MXPro always applies TBC to the entire sig-
nal, including the horizontal and vertical intervals.
• MXPro provides a dual-field TBC to correct two sources at the same time. Because
all transitions and effects use only two of the four sources at any given time, the
dual field TBC can correct the time base of the entire output signal, transitions
and all.
• The output sync of the TBC is independent of all inputs. There is no way to syn-
chronize it with an external sync or with any of the inputs.
Appendix B