EXFO PSO-100 Series Optical Sampling Oscilloscopes - Manual (Page 77)

Setting up and Using the Optical Sampling Oscilloscope
Optical Sampling Oscilloscope 69
Managing Measurement Parameters
Managing Measurement Parameters
In the Measurement menu you can select one or more parameters to
measure from an eye diagram, pattern or waveform.
You can display up to three measured parameters simultaneously in the
sample screen. When a fourth parameter is selected, the first one is
automatically deselected. The indicators on-screen always pertain to the
most recent measurement type you have selected.
The measurements are based on a number of histograms, so the longer
time you wait, the more accurate the parameters will become. As long as
at least one parameter is selected, all histograms are accumulated and all
parameters are measured even though not shown. By removing all
measurements, the histograms are cleared.
If you want to clear the histograms without removing the measurements,
use the Clear button in the main window.