Please be aware your COP probe will have different performance characteristics to the Pico device and may therefore demonstrate a different response to the example waveform in our Guided Tests
Regarding the additional grounding around the coils, looking at the wiring diagram this could be for fail safe and or additional shielding. One ground wire provides the necessary ground reference for the coil pack whilst the other provides a back up, additional shielding or increased load capabilities (assuming the power supply cable has sufficient cross sectional area)
Iiviu2004 - I would have normally zoomed in somewhat but I was just capturing and watching the traces live without pausing and going back to them, I also increased the size for simplicity of the photo.
I must admit I could use some practice with the zoom feature and will have a good play with it.
No I have not seen that video, I will take a look at it later tonight or over the next few days, thank you.
Steve
I have now downloaded Pico 7 and and I will give it a try, I did some training with Frank Massey a few months ago and he was using the Pico 6 so I continued with this as it is what I am familiar with. I'm hoping to get back into my friends workshop at the weekend and will see how I get on, Thanks.
The update on the possible dual earth is a help too, I didn't look at the wiring diagram until I got home after I had been playing, it did confuse me a fair amount when I was testing.
Also I was expecting to see traces like can be seen in the link below using the non pico COP probe but I will have to see if I can borrow a genuine one from my boss and see if that corrects it.