EXFO FPM-600 Power Meter - Manual (Page 34)

Measuring Power or Loss (FPM-600 and FOT-600)
28 FPM/FLS/FOT-600
Measuring Power or Loss
6. Match the source and power meter
wavelengths:

If the source emits an auto-wavelength
signal or is in auto-switching mode (see
Automatically Detecting Wavelength on
page 29 and see To receive the
auto-wavelength signal or detect the source's auto-switching
mode: on page 29), the power meter automatically matches the
source wavelength.
OR

Press to switch between pre-selected wavelengths (see
Defining a List of Favorite Wavelengths on page 22).
When the unit detects a modulated signal, it beeps and displays the
modulation value and average measured power or loss (see left
illustration above). You may notice a slightly unstable last digit.
7. If necessary, change the displayed units by pressing .
8. Repeat the procedure for other wavelengths.
When power or loss is outside power limits
(see Technical Specifications on page 67)
Actual power or
loss
of fiber under test
Modulation detected