Cobalt Digital COMPASS 9822 Downconverter - Manual (Page 40)

3
Ancillary Data Line Number Locations and Ranges
3-8 9822 PRODUCT MANUAL 9822-OM (V4.1)
Ancillary Data Line Number Locations and Ranges
Table 3-1 lists the default output video VANC line number locations for
various ancillary data items processed or passed by the card.
Because line number allocation is not standardized for all ancillary items,
consideration should be given to all items when performing set-ups. Figure
3-5 shows an example of improper and corrected VANC allocation within a
525i5994 SD-SDI stream.
Figure 3-5 Example VANC Line Number Allocation Example
Table 3-1 9822 Ancillary Data Line Number Locations/Ranges
Item Default Line No. / Range
AFD 12 (Note 2)
ATC_VITC 12 (Note 2)
Dolby ® Metadata 13 (Note 2)
SDI VITC Waveform 14/16 (Note 2)
Closed Captioning 21 (locked)
Notes:
1. The card does not check for conflicts on a given line number. Make certain the selected line is
available and carrying no other data.
2. While range indicated by drop-down list on GUI may allow a particular range of choices, the actual
range is automatically clamped (limited) to certain ranges to prevent inadvertent conflict with active
picture area depending on video format. Limiting ranges for various output formats are as follows:
Format Line Number Limiting
525i 12-19
625i 9-22
Card 1 Card n
SD ATC_VITC = 12
Dolby Meta = 13
SD VITC
Waveform = 14/16
CC = 21
SD ATC_VITC = 12
AFD = 12
Dolby Meta = 13
SD VITC
Waveform = 14/16
CC = 21
AFD Insertion
attempted using
VANC line 12
(default) Conflict between fixed
SD ATC_VITC and added
AFD both on VANC line 12
Card 1 Card n
SD ATC_VITC = 12
Dolby Meta = 13
SD VITC
Waveform = 14/16
CC = 21
SD ATC_VITC = 12
Dolby Meta = 13
SD VITC
Waveform = 14/16
AFD = 18
CC = 21
AFD Insertion
corrected to use
VANC line 18
Conflict between fixed
SD ATC_VITC on line 12
and AFD (now on line 18)
resolved