Grass Valley PROFILE FAMILY v.2.5 - Manual (Page 379)

Glossary
Profile Family 379
Video interface
The link to or from the internal video router and the external video signal.
An example is a composite analog input channel. This path takes a
composite analog video signal and converts it to 8-bit component parallel
digital and places it on the video router. Another example is the component
serial digital output. This path takes component parallel digital video from
the video router and converts to serial digital component format.
Video disk recorder/ server
A device such as the PDR200 Video File Server that stores audio and video
as digital information on disks.
VITC
Vertical Interval Time Code is encoded into the video lines at the start of
field. VITC can be read during still frames, but becomes unreliable at frame
rates faster than normal play speed, such as fast shuttle operations.
Video router
The video path through a system. The crosspoint circuitry that routes the
video within the Profile video disk recorder is a router.
Volume
A volume is a logical set of disks, such as the disks in a PDR100 or a
PDR 200, which are used as a grouping of disks for the storage of audio and
video information. Volumes may also consist of a PDX 103 or PDX 208 Disk
Expansion unit, or a PRS200 or PRS250 Profile RAID System.