Grass Valley PDR v.2.1 - Manual (Page 52)

Chapter 2 Using the Profile Configuration Manager
36 Profile Family
Renaming the Input Signal
Enter the new name in the Name field. For example, if SDI-InA-J13 is a
dedicated satellite feed, rename it Satellite_1. The VITC name, window title bar
name, and the configuration tree name automatically change 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 to 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. Line 1 and Line 2 cannot be more than 14 apart.
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 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
as soon as it drops back into range. The disk recorder can use untimed signals
if auto-timing is not enabled, but they are not timed correctly and may cause
jumping and skipping in E to E mode.