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EXFO FTB/IQS-85100G Packet Blazer for FTB-500/IQS-600 User Manual

Page 202

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Test Results

192

FTB/IQS-85100G

Alarms/Errors

OTL

Alarms

LOL (Loss of Lane Alignment)

RX: Multilane alignment process is in the out-of-alignment (OLA) state
for 3 ms.

LOF (Loss of Frame)

RX: OOF is present for at least 3 ms.

OOF (Out-Of-Frame)

RX: Any byte of the FAS (bytes 3, 4, and 5) is in error for at least 5
consecutive frames.

LOR (Loss Of Recovery)

RX: When OOR persists at least 3 ms.

OOR (Out-Of-Recovery)

RX: While in In-recovery (IR) state, in five consecutive 16320 byte
periods each of the received logical lane marker (LLM) is different
from the accepted LLM value.

Exc. Skew (Excessive Skew)

RX: The skew exceeds the defined threshold (see Skew Alarm
Threshold (bits)
on page 260).

Errors

FAS (Frame Alignment Signal)

RX: The FAS bits are in error.

Inv. Marker (Invalid Marker)

RX: Errors are detected in the 66-bit block alignment marker.