
GUIDE TO INSTALLATION AND OPERATION
XVP-3901-DPI |
33
Note 1 – Auto mode: When Auto is selected, all the ARC values are automatically set based on the AFD flag
detected at the input, and the ARC controls and presets described below are disabled. Annex 2 shows the AFD
functions implemented. If no AFD flag is detected at the input, the card uses the Default AFD flag specified in the
AFD tab
Note 2 – Forced mode: Forced mode is useful when the input AFD flag is unreliable, missing or if the user wants a
simple way to force the aspect ratio conversion. The function is the same as the Auto mode, except that the
incoming AFD flag is ignored, and a user-specified forced flag is used instead. As in the Auto mode, the ARC
controls and presets described below are disabled.
The input screen shows how much of the input signal will appear at the output after the ARC processing in the XVP-
3901. It does so by showing any cropped portions of the image in blue.
The Output Screen
The output screen shows the final result of the ARC processing.
•
The letterbox and side panel regions are shown in the selected background color
•
The masks are shown in Gray
A pull-down menu at the top of the screen allows the user to select the output aspect ratio:
•
either
4:3
,
16:9, or AUTO
.
•
AUTO output setting allows the XVP-3901-DPI to automatically select between a 4:3 or 16:9 output aspect ratio.
This decision is based on factors including the input AFD flag during input AUTO or FORCED modes, and the
ARC settings during manual modes. The aim of this output AUTO mode is to reduce the amount of side panel or
letterbox regions. Refer to the AFD table at the end of this document in order to understand visually this mode of
operation.
•
The output format is shown at the bottom of the window: 720x484i 59; 720x576i 50.
5.5.1 SD Output – ARC tab
Under the
ARC
tab, several sub-sections are found allowing
extended control over how the output will be displayed. For
convenience, ARC presets are available for frequently-
encountered aspect ratio conversions.
•
These controls are disabled when the ARC Mode
pulldown on the Input Screen is set to
Auto
or
Forced
When using manual aspect ratio mode (AFD mode is 4:3 or
16:9), the card will remember automatically all the
parameters for the different combinations of input/output
aspect ratio conversions (see the combinations below). This
means you can configure the card once for each type of
conversion and then the card will restore the configuration
automatically when the proper input format and input/output
aspect ratio is encountered.
•
SD 4:3 to SD 4:3
•
SD 4:3 to SD 16:9
•
SD 16:9 to SD 4:3
•
SD 16:9 to SD 16:9
Figure 5-24 SD Outputs - ARC
Содержание Grass Valley XVP-3901-DPI
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