Grass Valley PDR v.2.1 - Manual (Page 41)

Analog Composite Video Input
Profile Family 25
Overwritable Video Standard
This changes the video standard for this input board: NTSC with pedestal,
NTSC without pedestal, or PAL. If you change this standard, restart all tools
that use this channel. The board can serve both standards, but the input can only
accept one at a time.
Renaming the Input Signal
Enter the new name in the Name box. For example, if it is a network feed, you
could rename it to Network_Feed. The VITC name, the window title bar, and
the configuration tree name change automatically as you enter the new name.
Names can be up to 30 characters, and can include spaces. To return a renamed
signal to the default, delete all the characters in the text field, and press Enter.
VITC Reader Setting
If you use Automatic VITC detect, the disk recorder uses the range set in the
From and To lines to look for the VITC signals. If Automatic VITC detect is
not used, the disk recorder expects to find the VITC signals on the VITC Reader
Line 1 (default 10) or Line 2 (default 12). If the signal is found, the VITC
Present indicator is turned on.
NOTE: Input must be auto-timed to use automatic VITC detection.
Enable Auto-Timing
Auto-timing determines if the input is synchronized to the reference genlock
signal. The disk recorder records time-base corrected video whether or not it is
also locked to the reference. If auto-timing is enabled and the signal was able
to be timed into the system, then the Auto Timed indicator is turned on.
If you want to use the disk recorder as a switcher and/or have the output video
correctly timed when in E to E mode, the input video must be locked to the
reference and properly timed to the disk recorder. To aid in the timing setup, all
video inputs have auto-timing circuits which synchronize input video to the
internal timing reference as long as the input video is within the auto-timing
sync window (
±
1 lines). To get to the auto-timing window, the input must be
advanced 7.5 lines.
The auto-timing circuit is always trying to lock to the signal. If you try to auto-
time a signal outside of the window, the video signal appears to be broken-up
as it cannot be timed into the system. If the input drifts out of range, it is retimed