I just tried, again, to get a better trace of my cars secondary ignition waveform with my RIGOL DS1052E oscilloscope. I did get a picture with the basic idea of what is going on, but I need more detail from it.
I see you can get inductive probes or capacitive probes for this kind of job. I was simply just grounding to the engine block then touching the tip of my probe onto a spark plug wire. Probe on 10x and same in the scope settings.
Attached is a photo of what I managed to get. How can I get a better trace, notice how there is a lot of "ringing" after the initial voltage drop down. This must be noise or something because I am not using a proper probe, yes?
Maybe someone has made a capacitive probe and has some easy plans to make one? Also the rest of the traces that were running were quite messy too, this was one of the cleaner traces I could manage. I guess a better probe would fix that hey?
And for reference I have included a picture of what a trace should look like.

I see you can get inductive probes or capacitive probes for this kind of job. I was simply just grounding to the engine block then touching the tip of my probe onto a spark plug wire. Probe on 10x and same in the scope settings.
Attached is a photo of what I managed to get. How can I get a better trace, notice how there is a lot of "ringing" after the initial voltage drop down. This must be noise or something because I am not using a proper probe, yes?
Maybe someone has made a capacitive probe and has some easy plans to make one? Also the rest of the traces that were running were quite messy too, this was one of the cleaner traces I could manage. I guess a better probe would fix that hey?
And for reference I have included a picture of what a trace should look like.

