Might of use for reference. Taken from Rover K eu3 engine with coil on plug + wasted spark
Ignition Secondary negative spark voltage & coil primary current ramp at idle.
Spark duration 1ms, peak primary peak 10 amps.
[img][/img]

Same engine showing spark parade for no4 cylinder showing firing and wasted sparks

Coil current ramp in detail.

This your new toy?

What scope was it? Did it come with an amps clamp and HT pick-up?

Is it possible to invert the HT capture so it is displayed in the conventional way?

The HT parade looks very odd, I wonder if it is because the sample rate isn't high enough?

My ancient and pretty useless Vellerman HPS10 got zapped so I bought a Hantek 1008 and also a DSO nano 201v3.

The DSO nano after upgrading the firmware to Ben-F is just the thing for doing quick and dirt jobs like tracking down duff wheel sensors or no-starts. However my version has no USB card can't save waveforms or stetups.

The Hantek 1008 while exactly not the fastest scope world is a great tool for the money, the software takes a lot of getting used to and the help menu is useless but comes with a menu giving software presets for automotive diagnostics and an ignition secondary pick-up and for £53 inc P&P delivered in 48hrs from a UK supplier is a lot of bang per buck. At that price if get zapped it is no big deal. The real weak point with is the software it took me about 3 hours to get the drivers installed and switch the software to English. As it comes out the box it has all 8 channels switched on and the processor is overloaded, but once the number of running channels is cut to a sensible number the speed becomes adequate to car work.

Re-spark parade the Hantek will invert the signal but I only found it yesterday it was buried deep in the menu as a math function menu. The sparks parade on the zoomed out image is a bit odd but it seems to be display problem rather than a data capture problem with the Hanteck software, when zoomed on in each spark event looks normal.

I am using a Hanteck CC65 current probe --- nice bit of kit price has come down a lot at less £40 from eBay I couldn't resist.

I have a COP pick-up probe on order (£30) from Scantool direct so that should be interesting.