EXFO FTB-8500 Series for FTB-500 - Manual (Page 450)

Expert Mode Tabs
436 FTB-8500 Series and FTB-8120NGE/8130NGE
Port (BERT)
Frequency
Enter the minimum and maximum frequency offsets either in ppm or bps
according to the unit selection.

Frequency (bps): Indicates the frequency of the input signal.

Offset Max: Enter the frequency maximum value allowed before
declaring a Fail condition. Choices are from 0 to 120 ppm. The default
setting is 100 ppm.

Offset Min: Enter the frequency minimum value allowed before
declaring a Fail condition. Choices are from -120 ppm to 0 ppm. The
default setting is -100 ppm.

Status: Indicates the real-time pass/fail condition.
Grey LED: Indicates that Expert 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: Select the unit. Choices are: bps and ppm. The default setting is
ppm.