Grass Valley Profile XP Aug 16 2004 - Manual (Page 152)

Chapter 5 Modifying a Channel: Video Settings
152 Profile XP System Guide 23 July 2004
Recording synchronous and asynchronous feeds
The Profile XP Media Platform is a synchronous device. All the outputs are locked to
the house reference and all the inputs must be genlocked to that reference and at zero
time. The Profile XP Media Platform inputs can handle the anomalous asynchronous
case without interruption; video and audio are resampled to the house clock and
maintain phase within a window of one video frame. This resampling is not intended
to take the place of a frame synchronizer. It provides some protection if an untimed
signal is routed to an input, although loss of sync events may result in lip-sync errors.
NOTE: If you are using the Profile XP Media Platform to switch between video
inputs and decoder outputs (playback), you must set the output timing mode to E to
E Timed Outputs. For more information see “Adjusting video output timing” on
page 145.