AJA io hd, Инструкция по установке и эксплуатации

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Io HD Installation and Operation Manual — Using The AJA Control Panel
QuickTime Application—1st Priority
If a running QuickTime application uses Io HD for capture or output, it controls the
Primary format via its own menus and settings. For example, when Final Cut Pro is
active (it’s the topmost application) and has Io HD as its “A/V Device”, then the Io
HD's Primary format is determined by Final Cut's “Video Playback” submenu (under
the “View” menu) or in its “Audio/Video Settings...” dialog under A/V Devices.
When a QuickTime application is in control of the Io HD—versus one of the other
masters—it will be indicated by a label in both the AJA Control Panel's
Formats and
Control tabs. The AJA Control Panel’s Primary Format menu will also indicate that it
is not active while the QuickTime application is running—it will be grayed-out.
What can be confusing is that QuickTime applications can start and stop and change
modes—even while they are running! And the behavior of different QuickTime
applications can vary: some applications take control of the Io HD as soon as they are
launched and don't give it up until they quit, while other applications take control of
the Io HD only when they are the “front-most” running application and then
relinquish control when they’re not. Final Cut Pro is one of the latter type QuickTime
applications. This difference in behavior can surprise you when you click in and out of
multiple QuickTime application windows.
To illustrate such possible confusion, consider this multiple application scenario:
1. Open Final Cut Pro, select Io HD as the A/V device. FCP takes control of the
Io HD and tells it what Primary format to use. If one of the FCP windows
covers up the AJA Control Panel application (which typically happens), you
won't be able to see the
“Io HD is in use by Final Cut Pro” message displayed in
the Control Panel, or be able to tell which format FCP has selected. (This is
why we recommend you arrange your display so you can see the Control Panel
at all times.)
2. Next, you want to see what the Io HD is doing, so you find the Control Panel
application by clicking around on the desktop, eventually clicking on the
Control Panel to make it visible. As soon as FCP realizes it is now running in
the background, it gives up control of the Io HD board. The Control Panel
application takes away the “
...Final Cut Pro” message.
3. With the Control Panel the topmost application—and in control of the
board—you now switch to a different Primary format.
4. However, when you click back on Final Cut Pro and bring it back to continue
your project, it becomes the master again and resets the board's Primary format
to the one determined by Final Cut’s A/V Settings dialog. To further the
surprise, if FCP's windows are covering the AJA Control Panel window, the
change will be hidden and you won’t know why the board isn't doing what you
told it earlier via the Control Panel.
The moral of the story: keep the Control Panel visible so you can learn what various
QuickTime applications are doing when they control Io HD—and then you can step
in and change the application’s settings and Control Panel settings as desired to get the
configuration you expect.