This is the kind of thing I picture Peff doing in his free time:
"This short video shows how you can obtain values out of a Hammond organ's tonewheel generator with the use of a digital oscilloscope. Values are expressed in milliVolts peak-to-peak.
Starting from version 2.03 of GSi VB3 Crumar Edition II, it's now possible to add a custom generator with actual values in mVpp that match the organ from where they got measured.
Please visit www.crumar.it for more informations." -zioguido