AJA io hd, Installation And Operation Manual

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Control Tab
Screen The Io HD can be controlled by various software applications running on a host
Mac as well as be used as a Macintosh Desktop extension. The Control Tab is where
you select how the Io HD 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 HD (if there is one). For example, in the
screen shown here, the default output is a Test Pattern.
AJA Control Panel, Control Tab