Belden Grass Valley XVP-3901-DPI, Manual To Installation And Operation, Page: 49 / 87

GUIDE TO INSTALLATION AND OPERATION
XVP-3901-DPI | 43
The available types depend on the input format –AFD and VLI for SD-59.94 Hz inputs, and all three types for SD-50
Hz inputs.
The set priority is used only during input AFD AUTO mode. The XVP-3901-DPI will examine the incoming data in the
selected order of priority in order to extract the AFD data. If, in AUTO mode, an AFD flag is set to priority 1 and is
missing at the input, the XVP-3901-DPI will use the incoming AFD flag set to the next priority level.
The
Detected box shows the AFD code detected.
Outgoing – o
n the SD output, the AFD code shown in the Inserted box will be inserted in up to three different formats
simultaneously. Supported formats are shown; select their respective checkboxes to enable insertion. AFD will be
inserted in the line selected in the
Insertion Line pulldown. Note that VLI is normally inserted on line 14, so if AFD is
placed on line 14 using the pulldown, VLI will not be inserted.
Alternate ARC section
When the output is 4:3 SD, if the input AFD setting is set to Auto or Forced mode and the input AFD is a full screen
16:9 (AFD code 16:9_2 or 16:9_8), the output image may be scaled in one of 2 ways. Use the pulldown to select
which will be used:
•
Letterbox: Uses the traditional 16:9 letter box within a 4:3 frame where there is no loss of image.
•
Center Cut: The XVP-3901 provides a second alternative – the input is horizontally cropped about the center to
create a full screen 4:3 image. Choosing this alternative essentially removes 25% of the original image.
5.5.6 SD Output – De-interlacer tab
Some interlaced video sources are film-based originating from 24p film images. For optimum scaling performance, it
would be best to de-interlace this type of source by simply merging the source’s fields to recreate the original 24p
image, thereby introducing no de-interlacer artifacts prior to scaling and format conversion.
Film mode: When The Film Mode selection is set to ON, the
XVP-3901 monitors the input for film-based sequences and
applies the proper algorithm.
Film detection is provided for 3:2, 2:2 (59Hz and 50 Hz
sources) and 5:5 sequences.
Video Over Film: When the film mode is enabled, turn ON
the Video-Over-Film (VOF) function to detect and bypass
field-merging on certain video regions such as scrolling video characters over an entire film frame, thereby preventing
any unwanted combing effects.
There is only one de-interlacer on the card. Any changes made within this tab will be copied over to the De-interlacer
tab in the Video Output – 3G/HD panel.
Figure 5-34 SD Outputs - De-interlacer