EXFO PSO-100 Series Optical Sampling Oscilloscopes - Manual (Page 66)

Setting up and Using the Optical Sampling Oscilloscope
58 PSO-100
Using Colorgrade
Using Colorgrade
Colorgrading the sampling can let you see which parts of the graph are
displayed more often and which are displayed less often. The more often
the parts are displayed, the brighter the corresponding color will be. The
longer you let the sampling run, the more data is accumulated and the
more precise the results.
The color grade function uses the pixel information to calculate the 2-D
histogram. This means that a higher resolution in pixels/ps is achieved in a
zoomed window compared to the default window.
In the figure below you can see colorgrade in eye-mode.
To activate the color grade mode:
In the Display menu, select Colorgrade.
To restart the color grade accumulation:
Click Clear.