EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 - Manual (Page 205)

Test Results
Packet Blazer 195
Alarms/Errors
Errors

BEI (Backward Error Indication)
RX: SM BEI errors are received from the DUT (value 0 to 8).

BIP-8 (Bit Interleave Parity-8)
RX: There is a SM BIP-8 mismatch between the received value and
locally computed value (0 to 8).

FAS (Frame Alignment Signal)
RX: The FAS bits are in error.

FEC-CORR (Forward Error Correction - Correctable)
RX: Statistics on codewords (CW; default), symbols (SYMB), or bits
(BIT) corrected by the FEC.
TX:
FEC-CORR-CW (Forward Error Correction - Correctable -
Codeword): Generates 8 symbols (bytes) containing 8 bits in error
each, in each codeword.
FEC-CORR-SYM (Forward Error Correction - Correctable -
Symbol): Generates 1 symbol (byte) containing 8 bits in error.
FEC-CORR-BIT (Forward Error Correction - Correctable - Bit):
Generates 1 symbol (byte) containing 1bit in error.
OTU BEI bits
(1234)
BIP violations
ODUk BEI bits
(1234)
BIP violations
0000 0 0101 5
0001 1 0110 6
0010 2 0111 7
0011 3 1000 8
0100 4 1001 to 1111 0