EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 142)

OTN Tabs
130 FTB-8100 Series Transport Blazer
FEC TX
FEC TX
Press Main, Test, OTUk, FEC, and FEC TX.
Configuration
Enable FEC allows detecting, reporting and correcting up to 8 symbol
errors (Correctable) per codeword. Over 8 symbol errors, they are
detected and reported as uncorrectable errors. This setting is enabled by
default.
Note: Enable FEC must be selected when Enable Scrambler is not selected in
order to prevent potential alarms caused by a lack of transition on the
optical signal. To disable FEC, first select Enable Scrambler then clear
Enable FEC. See OTU TX on page 133 for more information on Enable
Scrambler.
Error Injection
Allows manual or automated error injection.
Note: Error injection is only available when the Enable FEC check box is selected.