Grass Valley PDR v.2.1 - Manual (Page 57)

Analog Composite Video Output Vertical Interval
Profile Family 41
Analog Composite Video Output Vertical Interval
The Vertical Interval tab brings up the Analog Composite Video Output
Vertical Interval controls. The vertical interval line numbers change depending
on the selected video standard.
Figure 21. Analog Composite Video Input Vertical Interval dialog box
The settings determine how the Vertical Interval signals are handled. The video
on these lines can have the Procamp Enabled (the settings are the same as the
regular video), the VITC Enabled (if VITC Generator Enable from the Output
Settings group is checked), or the input can Pass Video through. All or none of
the options can be selected for each line. There are three default buttons:
Default Procamp, Default VITC, and Default Pass Video; to reset these
specified values back to the factory presets.
NOTE If the Pass Video box is not checked, the input video is
replaced with black. Do not check Pass Video for VITC lines. Pass
Video overrides VITC Insertion.