EXFO FTB-8500 Series for FTB-200 - Manual (Page 353)

Expert Mode Tabs
Ethernet and Fibre Channel Application 339
Pattern (BERT)
Pattern (BERT)
Press , and Pattern.
Enable Pattern Criteria: Enable Pattern Criteria enables configuring the
Pattern pass/fail threshold values and parameters (Port 1 and Port 2 for
Dual Ports on FTB-8510B). This setting is disabled by default.
Alarms
Enter the threshold value for each alarm: Pattern Loss and No Traffic.

Status: Indicates the real-time pass/fail condition.
Grey LED: Indicates that Expert Mode is disabled or the test did not
run yet.
Green LED: Indicates that the threshold is respected (Pass).
Red LED: Indicates that the threshold is not respected (Fail).

Unit: The unit is Second.