AJA KONA 3G, Installation And Operation Manual

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Framebuffer —the framebuffer is the “engine” in the KONA 3G card
where active video operations take place using Final Cut Pro, other
3rd-party applications, or even KONA 3G itself. The framebuffer has
a format (called the “Primary Format” and color space that it follows,
as defined in the Tabbed Windows or via external application
software (such as the “Easy Setups” in Final Cut). If the framebuffer is
processing 2K frame video-and video cropping is turned ON, it will
indicate the cropping by showing a “shadow” underneath the icon
(more later on how it's cropped).
It is important to realize that inside the Macintosh many
applications can use the KONA 3G card (as you switch from window to window) and it
may not always be obvious which is currently controlling it. The AJA Control Panel
displays the name of the application controlling the card in red text on the Format and
Control tabs of the interface. If an application does not properly “let go” of the card as
another takes over-you'll be able to tell by looking at the Control Panel.
Primary Format —the video format currently assigned to KONA 3G. This is the format that
the framebuffer will use and is shown in the Control Panel using the color blue. All
icons in blue are the same as the Primary Format used by the framebuffer. Also any text
descriptions in the block diagram that appear in blue also indicate that something is in
the primary format. So, for example, if you see that the input and output icons are blue,
then you know that the same format is used throughout the video path and that no
format conversion is being performed. If a different color is displayed on the input or
output, green for example, then you know that KONA 3G is performing a format
conversion in the video path.
Secondary Format —any format other than the currently selected Primary Format, is a
secondary format. As described previously, this means that either the Inputs or
Outputs are somehow different from the framebuffer’s assigned format (i.e., the
“Primary Format”). This can be seen at a glance because the color will be different than
blue.
Input/Output Icons —the input and output icons are triangles that together with their
color show all the input and outputs and their status (selected, not selected, input
present or not, format, etc.). A complete video path is shown when inputs and outputs
are connected with lines going to/from the framebuffer.
Input/Output Icons
Single-link
Dual-link
Quad-link (4K Mode)