EXFO MAX-800 Series, User Manual

Page: 259 / 495

Test Results
MaxTester
251
Alarms/Errors Overview

AIS-P (Alarm Indication Signal - Path)
RX
: The H1 and H2 bytes for a STS path contain an all-ones pattern in
three consecutive frames or more.
TX
: Generates an all-ones pattern for H1 and H2 bytes.

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”).