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Control Panel Operation
Control Tab Screen
The Io XT can be controlled by various software applications running on a host Mac. The
Control Tab is where you select how the Io XT directs video and is used by application
software. This screen also provides control for configuring output timing with regard to
external reference video and horizontal/vertical delay.
At the top of the Control screen it will show the current Default Output and the application
currently controlling the Io XT.
AJA Control Panel, Control Tab
Control Tab Screen Settings
Default Output
—this is where you select what Io XT will output as a default when no
application has control of the board, such as when the Finder is active. Since Io XT can be
controlled by software applications as well as its own control panel, the output can change
dynamically. When you select many video applications, they will grab control of the Io XT
inputs/outputs. These settings determine what happens when an application that doesn't
grab the Io XT inputs/outputs is active.
Default Output Choices and their meanings:
Black:
this selection directs Io XT to output video black whenever an application isn't
controlling the card.
Input Pass through:
this selection directs Io XT to route video from its selected input
through the card for processing and output. When this selection is in effect, all
Primary/Secondary Format selections are available for selection in controlling the
output. This in effect makes the Io XT a converter when used in conjunction with the
AJA Control Panel application and a Mac. No applications other than the AJA Control
Panel need to be open to convert audio and video from one format to another. For
example, if an SD source tape needs to be dubbed to an HD tape, the signal might be
