IGMP version: Shows the IGMP version currently selected in the ”Device Info” page under “Network”, “Advanced” Settings.
Reset statistics: Press this button to reset the counters: RTP sequence errors, Lost IP frames and Corrected IP frames.
3.7.2 FEC Settings
Figure 21. The FEC sub-page of an IP receiver
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Enable FEC: Tick this box to enable use of FEC.
Alarm threshold: This parameter controls the frequency of lost frames that should cause activation of the ‘FEC Threshold Exceeded’ alarm. The threshold is configured in the unit of frames between losses, causing the alarm to be activated if the number of frames received between two losses falls below the configured number.
In the Status frame the following parameters are shown:
Lost IP frames: This counter shows the number of lost IP frames. This means packets which remain uncorrected.
Corrected IP frames: This counter shows the number of IP frames corrected by the FEC engine.
Duplicated IP frames: This counter shows the number of duplicated IP frames received.
Columns (L): This shows the number of columns in the incoming FEC stream.
Rows (D): This shows the number of rows in the incoming FEC stream.
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