AJA Io4K - Manual (Page 27)

Io XT/4K v10.5r2 www.aja.com 27
NOTE: In some cases the application you use with the Io XT/4K will automatically set the Primary
Format, overriding the user’s selected primary format in the AJA Control Panel.
Format Conversion: Conversion allows selection of a format conversion between High-definition and
Standard-definition. The choices offered depend on the AJA device present in your
system and the Primary and Secondary format selected. Io XT supports up-, down-, and
cross- conversion plus SD-to-SD aspect ratio conversions.
Conversion is performed based upon the Primary or Secondary Format settings. Io XT/4K
can down-convert the input format (when designated as a Secondary Format) to the
selected Primary Format. Or you can assign a Secondary Format for output that will be a
conversion from the Primary (frame buffer) format.
NOTE: When converting an Input to the Primary Format, select the Secondary Format option that
has (I), for input only, appended to it. Conversely, when converting an Output from the
Primary Format, you must select an output signal with (O) for output only.
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.
Figure 24. Input/Output Icon
Conversion Icons: When an input or output is a different standard than the framebuffer, the Io XT/4K may
be up- down- or cross-converting the signal to the selected standard. This may be
automatic, because it's detected an input signal that differs from the standard currently
selected, or because you've explicitly told it to convert. In either case, the block diagram
will show the conversion by displaying a conversion icon in between the input/output
and the framebuffer.
Figure 25. Up, Down, and Cross-convert Icons
Control Panel Screens: The side area of the Io XT/4K Control Panel provides different information categorized by
topics. Clicking on a topic—or a block diagram element—displays an information screen
corresponding to that topic. Screens that can be selected are:
Control: configures Io XT/4K operation and output timing.
Format: select the framebuffer primary video format and any secondary formats for
conversion of inputs/outputs
Input Select: view and edit input selections and how they are mapped
SDI Out: select output format
HDMI: configure the HDMI I/O
Analog Out: configure the component/composite analog output
Video Setup: configures Video such as composite black level and filtering specific
video parameters for output.
Audio Setup: (Io XT only) configures Audio options such as analog audio monitor
level.
Conversion: (available for Mac only) for applications that support selection of codec