EXFO Inline Power Meter - Manual (Page 7)

Power Meter and VFL 3
2 Using the Optional Power
Meters and VFL
Note: If a feature is only available for one type of power meter, it is indicated
specifically in the corresponding title or instructions.
Note: Some buttons are not available when you first access the Power Meter
application, but will be available after you tap Add for the first time or after
you open a file.
Below is a description of the Power Meter buttons and functions.
Selected wavelength
To switch between
available power meter
wavelengths
To take a new reference
measurement
Measured power or insertion loss
To switch between dB, dBm
and W as measurement units
To store a reading to the
Measurements window
To activate VFL and
change VFL mode
To perform an offset
nulling