Ross Opengear UDC-8625A Series, User Manual, Page: 73 / 174

UDC-8625A Series User Manual (Iss. 11) Ancillary Data • 5–5
• Line # — The card searches only the specified line in the input signal for the VI.
4.
Use the Output Line Number menu to specify which line in the output to insert the VI
Data on. Choose from the following:
• Follow Input — The card inserts the VI data on the line the incoming data was on.
• Default — The card inserts the VI data on line 11 of the output.
• Line # — The card inserts the VI data on the specified line of the output.
OP-42 Processing
The UDC-8625A supports the transmitting captions on PAL systems via the OP-42 specification.
To configure the conversion of OP-42 sub-titles
1. From the Device View , select the ANC tab.
2. Locate the OP-42 Subtitle Config area on the ANC tab.
ANC Tab — OP-42 Subtitle Config Options
3.
Use the OP-42 Encode/Decode Line menu to specify which line to search for the
OP-42 subtitles data in the input signal. Choose from the following:
• Default (21) — Only Line 21 is searched for OP-42 subtitles data.
• # — Searches only the specified line for OP-42 subtitles data.
4. Use the Send Dummy Headers button to determine whether a time filling header
(dummy header) is sent whenever valid captions are not detected. Choose from the
following:
• Never — A dummy header is not inserted even if captions are missing or not
detected.
• Auto — If captions are missing or not detected, the card automatically sends a
dummy header in place of the missing captions.
• Always — The card continuously fills unused bandwidth with dummy headers
regardless of the input. Select this option if you want to remove upstream subtitles
and still fill the bandwidth.
5. Use the On Missing Packet menu to determine what is inserted when the card detects
only one valid OP-47 packet per frame. Choose from the following:
Note
— If you select any line option other than Follow Input or Default , (default for
525 line video is line 14, 625 line defaults to line 11), they will overwrite any VANC
data that may already be present on that line.
Note
— When enabled, OP-42 conversion will override the Video index function.
Note
— OP-47 must be encoded on Line 21.