EXFO FTB-8100 Series Transport Blazer for FTB-200 - Manual (Page 149)

OTN Tabs
SONET/SDH Application 137
OTU RX
OTU RX
Press Main, Test, OTN, OTU, and OTU RX.
Configuration
Note: See OTU TX on page 133 for more information on Enable Scrambler.
Alarm Analysis
Possible alarms that can be detected are:
³
LOF (Loss Of Frame): LOF is declared when OOF is present for at least
3 ms.
³
OOF (Out-Of-Frame): OOF is declared when FAS (bytes 3, 4, and 5) are
in error for at least 5 consecutive OTU frames.
³
LOM (Loss Of Multiframe): LOM is declared when OOM is present for
at least 3 ms.
³
OOM (Out-Of-Multiframe): OOM is declared when MFAS are in error
for at least 5 consecutive OTU frames.