User`s guide

AVoption & AVoption XL Guide28
Media Management
It is recommend that you dedicate one SCSI
channel to audio drives and one SCSI channel to
video drives. This configuration is adequate for
AVoption XL with compression levels of 3:1 or
higher.
If you want compression levels of 2:1 or 1:1 (un-
compressed), an additional separate dual-chan-
nel SCSI card is required for video drives. These
configurations require that striped drives are
split across the SCSI buses.
If your Pro Tools system is mounting an inter-
change drive originated by an Avid picture
workstation, it is recommended that this inter-
change drive be installed on the SCSI bus dedi-
cated to video data.
If your Pro Tools system receives an ADU2 drive
with data from an Avid picture workstation, it
recommended that you do not record additional
audio files or tracks onto this drive.
AVoption XL Video
Connections
The following video I/O capabilities are avail-
able with the Meridien I/O Box:
• Inputs for composite, component (Y, R-Y, B-
Y), S-Video, and (optional) SDI.
• Outputs for composite, component (Y, R-Y, B-
Y), S-Video, and (optional) SDI.
• Video Ref input to allow the video to be
locked to an external source such as house
sync or a black burst generator.
Note that only one video input source can be
used at a time. For more information, see “Re-
cording Video” on page 37.
The Meridien I/O Box can only output from
either S-Video or Component outputs. You
must set this option in your Movie Track.
See “Setting S-Video or Component Output”
on page 36 for instructions.