EXFO FTB-800 Series for FTB-1 - Manual (Page 302)

Test Results
292 FTB-700G/800 Series
Alarms/Errors

RDI-P (Remote Defect Indication - Path)
RX: Bits 5, 6 and 7 of the G1 byte contain the “100" or “111" pattern in
ten consecutive frames.
TX: Generates a “100” pattern for bits 5, 6 and 7 of the G1 byte.

LCD-P (Loss of Code-Group Delineation - Path)
RX: The signal synchronization has been lost and the valid code-groups
are no longer being delineated from the received payload stream being
passed to the PCS.
TX: Generates a PCS link down.

LOP-P (Loss Of Pointer - Path)
RX: For non-concatenated payloads, a valid pointer is not found in N
consecutive frames (where 8 = N = 10), or N consecutive NDFs
("1001" pattern) are detected.
TX: Generates a non-valid pointer.

PLM-P (Payload Label Mismatch - Path)
RX: Five consecutive frames have mismatched STS signal labels.

UNEQ-P (Unequipped - Path)
RX: The C2 byte contains “00 H" in five consecutive frames.
TX: Generates samples of unequipped STS signal labels (C2 is set to
“00 H”).

ERDI-PSD (Enhanced RDI - Path Server Defect)
RX: Bits 5, 6 and 7 of the G1 byte contain the “101” pattern in five to ten
consecutive frames.
TX: Generates a “101” pattern for bits 5, 6 and 7 of the G1 byte.