Fiber Optic Power Measurement
The currently measured power level is displayed in the center block of the screen. The power
level can be displayed in dBm or mW, depending on the user selection. The power level can
also be displayed in dB, see 'Referenced Measurement' below for more details.
Measurement Statistics
In the lower portion of the screen, the minimum, average, and maximum power for a given
measurement are calculated and displayed. These are displayed in the same units as the current
power level.
The statistics are valid only for the currently measured wavelength. They are reset upon
changing the wavelength value, by selecting View->Reset, or by restarting the mode.
Limit Checking
If the fiber optic power limit is turned on, the current power level is checked against the
configured limit. The statistics are not part of limit checking. An indicator
is shown at the top of the screen, indicating its Pass/Fail status.
Wavelength and Frequency
At the top of the screen, the measured signal wavelength and modulation frequency are displayed.
WAVELENGTH
This indicates the wavelength (in nanometers) of the signal currently being measured.
FREQUENCY
This indicates the modulation frequency (in Hz) of the signal. CW indicates there is no modulation.
If the Optical Power USB device is not present, this segment will display the message 'Please attach the optical power module.'
Referenced Measurement
Selecting 'Reference' from the menu screen will set the measurement into reference mode. This takes
the current power reading and sets it as a reference value. Subsequent power readings as well as the
statistics are displayed in dB from the reference value.