Grass Valley PDR v.2.2 - Manual (Page 46)

Chapter 2 Using the Profile Configuration Manager
28 Profile Family
You can also fine tune your system timing settings individually under
Reference Genlock System Input Advanced Adjustment in the Reference
Genlock dialog box. You can also tune individual output settings under Output
Timing Adjustment in under Video Output.
Figure 15. System Timing dialog box, zero-timed