Ok, I've attached the pic for the ignition pattern. The scale is 10V per vertical division and 500us per horizontal; the scope is a Sun LS2000 (23Mhz). You can see it's a conventional dwell-saturated waveform... but of cors, the wiring diagram kinda gave that away at 1st glance.
Your coil is fed battery voltage from fuse 4 (15A), according to the 2016 Duke 390 diagram, on the or-wh wire. That's the same as a 2015; you have a 2015, right? But I didn't have a 2015 manual, so we're improvising over here.
I'm gonna go put my bike back together. I'll keep an eye on the thread in case there's anything else I can do to [help?].