Grass Valley PDR v.2.1 - Manual (Page 50)

Chapter 2 Using the Profile Configuration Manager
34 Profile Family
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.
NOTE: If you select auto-timing for an input signal and it cannot
auto time with the genlock reference signal, the input signal is not
recorded accurately. If you must record an input that cannot lock,
disable auto timing and record. There may be problems if you are
operating on E to E mode, but the clip plays back correctly timed.
If auto-timing is enabled, and the signal was able to be timed into the system,
the Auto Timed indicator is turned on.
Enable Dither
Dithering smooths out roughness caused when a signal is digitized. The LSB
artifacts on 10-bit video feeds are reduced. There is no effect on 8-bit video.
Vertical Blanking
If you enable vertical blanking, for the 525 standard, lines 1 through 9 and 264
through 272 are blanked; for the 625 standard, lines 1 through 5, 311 through
317, 624, and 625 are blanked.