Grass Valley PVS Series System Guide v.4.0 Dec 10 200 - Manual (Page 26)

Chapter 1 Introducing the Profile XP
26 Profile XP System Guide July 27, 2001
Installation Guide contains specifics about the type and number of default channels
in your Profile XP model, and their video and audio I/O connections.
You can use the information in this System Guide to modify default channel settings
to satisfy the needs of your system. For more information about channels, refer to
Chapter 4, Adding or Removing Channels.
Video compression
The Profile XP Media Platform uses MPEG 2 4:2:2 @ Main Level encoding with
selectable bit rates from 4Mbs to 50Mbs. The additional chroma resolution that 4:2:2
sampling gives provides good multi-generation capability as well as up-conversion
quality.
Seamless play and cuts editing at any bit rate and any GOP is made possible by the
Profile XP dual MPEG decoder architecture that allows storage efficiencies of a long
GOP and maintains the ability to cut on any frame and play clips back-to-back
seamlessly. This provides all of the advantages of long GOP encoding, without the
limitations.
Default
channel
type Video I/O
connections Audio connections a
a.
The number of audio I/Os is determined by your Profile XP model and the number of Audio
boards installed.
Timecode I/O
Recorder 1 SDI video input
1 analog monitor
b
b.
Available if the optional Video Monitor board is installed.
2, 4, or 8 audio I/Os Uses the internal
timecode generator.
Player 1 SDI video output 2, 4, or 8 audio I/Os Recorded timecode is
used to generate VITC on
the SDI video output