EXFO FTB-500 (Window XP) - Manual (Page 123)

Using the Optional Built-In Power Meter and VFL
FTB-500 113
Setting Thresholds and Correction Factors
To set thresholds or correction factors:
1. On the button bar, tap Setup.
2. From the Thresholds list, select the wavelength for which you want to
set a threshold or a correction factor.
3. If desired, select Apply thresholds (Pass/Fail status) if you want the
application to identify the pass and fail values using visual clues, and
activate the pass/fail LED on your unit.
Wavelength list
Thresholds list (dB, dBm, W)
for each wavelength
Correction factor for each
wavelength
To revert to
default values
To display pass/fail
status icons and
indicators