Cobalt Digital COMPASS 9081 HD_SD Frame Sync - Manual (Page 59)

9081-OM (V4.6) 9081 PRODUCT MANUAL 3-29
Operating Instructions
9081 Function Submenu List and Descriptions
(continued)
• Dolby ® Digital Channel and Dynamic Range
Controls
Channel Select drop-down list sets the channel carrying the Dolby ®
Digital encoded signal for D1/0 formats as shown from choices on the left.
Dynamic Range Control drop-down list selects from audio level
compression scheme choices as shown to the left. (Line Mode is typical
setting; RF Mode is used where signal may be fed through low-cost video/
audio RF modulator, in which case RF Mode helps prevent
overmodulation. Refer to ATSC A/52B for more information.)
• Metadata Embedding Metadata Embedding (On/Off) controls SMPTE 2020-1 metadata
embedding in the SDI video output.
• When set to On, metadata from selected source is embedded in the
output SDI video.
• When set to Off, metadata is not embedded in the output SDI video.
Note: Metadata Embedding should only be set to “On” if new metadata is
to be embedded. Existing metadata on the SDI input is passed through
the card unaffected, requiring no operator intervention.
• Metadata Output Source Drop-down list allows embedding and RS485 metadata routing to the
choices shown to the left and described below.
• Embedded: Dolby Decoder, RS485: Dolby Decoder – Routes the
metadata from the Dolby ® decoder to both embedding on the output
SDI and the RS485 port on card so equipped.
• Embedded: Input Video, RS485: Dolby Decoder – Preserves
input metadata and directly re-routes it to the output SDI. Routes the
metadata from the Dolby
®
decoder to only the RS485 port on card
so equipped.
• Embedded: Input Video, RS485: Input Video – Routes the
preserved input metadata to both embedding on the output SDI and
the RS485 port on card so equipped.
Note: Typically, Metadata Output Source should be set to
Embedded: Dolby Decoder, RS485: Dolby Decoder, since this is
the new metadata produced by the card decoder and should also be
made available in the SDI stream and to any other external systems.
If embedding new metadata, make certain to set its line number
such that such that any old metadata for the same purpose is
overwritten (i.e., new metadata set to the same line number as the
old metadata to be replaced).
• Metadata Output Line
Allows selection of SMPTE 2020-1 metadata line location within the VANC
space for source embedding selected above.
(Range is 9 thru 41; default is line #13.)
Note: • Although the output line drop-down will allow any choice within the
9 thru 41 range, the actual range is automatically clamped (limited
to) certain ranges to prevent inadvertent conflict with active
picture area depending on video format. See Ancillary Data Line
Number Locations and Ranges (p. 3-8) for more information.
• The card does not check for conflicts on a given line number.
Make certain the selected line is available and carrying no other
data unless existing metadata is to be intentionally overwritten.
Table 3-2 9081 Function Submenu List — continued