these are the source coil outputs, timewise. (peaks)
brn - 3172
(red is very similar, as is brn to red. see waveforms)
these pulser/stator signals are recorded as audio then "looked at" in audio mix program (details at end).
voltage levels are not to scale, ie the pulser puts out ~5v peak, and the red wire is ~100v+ peak.
the signal strength levels have each been adjusted while recording so they "fit".
time (ie peak to peak, zero to zero, etc should not change).
for a tdc reference signal, i hooked up a mechanical wiper switch contacting at tdc,
electrically isolated from the bike,
switching a 1.5v bat to the audio.
ref wiper bench
the the two wires at the left are bridged by the contact point at the right when it comes around on the guitar, er, camsprocket.
ref wiper installed
the reference switch contacting (in this case, switching 12v to directly power the led) (w/450ohm inline).
at cranking speed, ~350rpm, so that's ~10x individual contacts/light pulses we're seeing! pretty consistent.
the image would be a little sharper but the camera lens is focussed past the switch.
ref check @start
rechecked at end of session, had not strayed.
(switching 12v to power the led).
(continued next post)