Hi,

I am trying to analyze a weak photoplethysmography signal using the oscilloscope feature of Analog Discovery. I am seeing an additional shadow plot in the background of the actual signal. I am curious what does the background plot indicate? I didn't find any information regarding this in your manuals.

Thank You!!!

I didn't find the right solution from the Internet.

References
https://forum.digilentinc.com/topic/870-analog-discovery-oscilloscope-waveform-plot/

2d animation examples