Grass Valley iTX System v.2.6 - Manual (Page 167)

Configuring channels
This dialog displays the settings for a range of Advanced ARC operations; it also displays
settings for the AFD (Active Format Description) codes that may be inserted in the output video
signal for these operations.
The ARC mode and AFD code for a schedule event are based on the source format (aspect
ratio) and active region (the area of the video frame that contains the image) of the video clip
that is used in the event.
You can set the ARC behaviour for different combinations of source format and active region by
configuring the following.
• The aspect ratio of the output video frame. For HD channels, this is normally 16:9; for
SD channels, 4:3.
• The ARC mode, which determines the type of ARC operation that will be performed on
video clips with the specified combination of properties. The ARC can be disabled by
setting the source video to play "full frame".
Also, depending on the type of ARC operation, you can set:
The AFD code
To simplify configuration, three default mapping configurations are available; these should
cover the requirements of most iTX systems. You may need to make minor adjustments to a
default configuration for your system (for example, you may disable the ARC feature when the
active region is set to "Passthrough").
Note:
• The Advanced ARC and AFD-insertion features are only available if your system has the
necessary software License. Your system may be licensed to use the functionality for
both of these in one licence. Configuring the settings for unlicensed functionality does
not affect the output video signal.
• The mapping configuration dialog is intended to provide the maximum flexibility for
the setting up of ARC operations and AFD insertion. The dialog does not prevent you
from setting unsuitable configurations (for example, selecting a 4:3 aspect ratio for an
HD channel).
To prevent problems with the display of the video image, ensure the configuration settings
are correct for each channel in your iTX system.
Set the mapping configuration
Do the following for each combination of source format and active region.
1.
Select the aspect ratio of the output video in the AR box.
2. Select an ARC mode in the ARC Mode box. (You may disable the ARC feature by selecting
"Disabled".)
For more information, see "
Available ARC modes ", page 168.
3. In the AFD box, select the AFD code to be inserted into the output video.
Note: iTX supports AFD codes 1000 to 1111 (8 to 15). You should not select AFD code 1100
(12); it is reserved for future use in the AFD standard.
4. Click OK to close the mapping dialog.
March 2015 System Administrator Guide Page 167 of 404