EXFO FTB-8510B Guia Del Usuario página 992

SDH Tabs
HOP RX (SDH)
Alarm Analysis
AU-AIS (Administrative Unit - Alarm Indication Signal): The AU-AIS
alarm is declared when the H1 and H2 bytes contain an all-ones
pattern in three consecutive frames.
AU-LOP (Administrative Unit - Loss Of Pointer): The LOP alarm
indicates that a valid pointer is not found in N consecutive frames
(where 8 ≤ N ≤ 10), or that N consecutive NDFs ("1001" pattern) are
detected (non-concatenated payloads).
H4-LOM (H4 - Loss Of Multiframe): For TU structured optical frames,
the H4-LOM alarm indicates that the system loss track of the H4 byte
multiframe indicator sequence.Not supported on the FTB-8140.
HP-RDI (High Order Path - Remote Defect Indication): The HP-RDI
alarm is declared when bits 5, 6 and 7 of the G1 byte contain the "100"
or "111" pattern in five consecutive frames.
HP-TIM (High Order Path - Trace Identifier Mismatch): The HP-TIM
defect indicates that the received J1 Trace doesn't match the expected
message value. The HP-TIM alarm result is only available when Enable
HP-TIM check box from J1 Trace section has been selected.
HP-PLM (High Order Path - Payload Label Mismatch): The HP-PLM is
declared upon receipt of five consecutive frames with mismatched VC
signal labels (C2 byte).
HP-UNEQ (High Order Path - Unequipped): HP-UNEQ is declared
when the C2 bytes contain "00 H" in five consecutive frames.
ERDI-SD (Enhanced RDI - Server Defect): The ERDI-SD alarm is
declared when bits 5, 6 and 7 of the G1 byte contain the "101" pattern
in five consecutive frames.
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FTB-8100 Series Transport Blazer