Grass Valley PROFILE FAMILY v.2.5 - Manual (Page 296)

Chapter 9 Using the List Manager
296 Profile Family
Scheduling Rules and Constraints
Rule #1: Absolute events always start at the scheduled time.
• Of multiple absolute events inserted at the same time, the last inserted
absolute event is the one that is scheduled.
• If an event’s end time overlaps an absolute event start time, that event is
shortened so that the absolute event starts on time.
Rule #2: An approximate event always cues if it is the next event in the time
line.
• A cued approximate event is de-cued 150 frames prior to the start time of an
absolute event (see rule #1).
• Approximate events remain in the list during their aging process. The aging
process allows approximate events to stay cued past their start time.
Allow at least fifteen seconds for a channel to switch between record and
playback. The 15-second gap is used in the following manner: 5 seconds for
queuing, 5 seconds for de-queuing, and 5 seconds to account for transition gap.
Allow at least 10 seconds between starting a recording on one channel and
playing that clip on another channel. The 10-second delay allows the material
to exist at least 5 seconds prior to queue time.
In the situations described here, use absolute events rather than approximate
events, because the rules for approximate events allow them to exceed the
constraints.