Cobalt Digital Inc BBG-1090-DEC-MPEG Product Manual page 62

• SMPTE 2022 FEC: Select the FEC mode, as follows:
o Disabled: No SMPTE 2022 FEC packets are transmitted.
o Column Only: The Decoder will send a single FEC flow, corresponding to the
column protection data, using a UDP port number corresponding to the media
UDP port number plus 2.
o Row and Column: The Decoder will send two FEC flows, the first
corresponding to the column protection data, and the second corresponding to the
row protection data. The row protection data will be sent using a UDP port
number corresponding to the media UDP port number plus 4. Note that not all
receivers support Row and Column mode; such receivers will only use the FEC
Column data and discard the FEC Row data.
If either Column Only or Row and Column are selected, the following additional
controls are displayed:
• Columns: Number of columns in the FEC matrix. This variable must be between 1 and
20 if SMPTE 2022 FEC is set to Column Only, and between 4 and 20 if it is set to Row
and Column.
• Rows: Number of rows in the FEC matrix. This variable must be between 4 and 20.
If the NULL Padding box is checked, the following additional control is displayed:
• Auto Bit Rate: If this box is checked, the Decoder will automatically determine the
NULL padding rate for the stream, based on the measured peak rate. The auto rate may
change over time if the stream peaks at higher rates. The current auto bit rate can be read
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