So I've been troubleshooting some electrical problems with a motorcycle charging system, and I need a little assistance understanding the output waveform:
Per an article (which I don't have enough reputation points to link to...), I interpret the first half as "good" and the latter as "bad", though the latter does not 100% match any of the bad scenarios. The switch between these two different waveforms happen quite often and with no outside stimulus. Unfortunately the R/R is a "black box" so I can't measure the rectifier output before the regulator.
I suspect that the dips I'm seeing in the latter half of the waveform represent the regulator periodically shunting current to ground in order to do it's regulator thing but I'm looking for confirmation\alternative explanations.
Here's a schematic of this particular system: