Hi Debbie and thank you for your post. To be perfectly honest I had to Google Syncrograph and can now see how this device determines the stability of a conventional distributor at various speeds to conclude good even dwell with mechanical and vacuum advance. In answer to your question I would like you to refer to a fantastic video tutorial on our website https://www.picoauto.com/video/volvo-problem-child.html
which utilises the WPS500 pressure transducer to determine the TDC of number 1 cylinder. Once this is established, with a trigger on No.1 ignition lead the ignition timing can be calculated in relation to TDC. The video from Autonerdz explains this very well using 2 different techniques.
My line of thinking is that once you can determine the TDC of No1 cylinder and the time frame between each ignition of No1 cylinder, you can then calculate the position of the remaining cylinders using the phase markers available in the Pico beta software (180 degree intervals between No1 cylinder firing events on a 4 cylinder engine). With this in mind you can monitor the primary ignition voltage and current then plot them exactly like the video against the phase markers (TDC) You can then calculate the ignition timing for each cylinder at idle, with vacuum applied to the vacuum advance unit, and at high engine speeds to determine the integrity of the mechanical advance device.
Because you can monitor the primary voltage and current you can also measure the Dwell period at all engine speeds to confirm no wear in the contact breaker points "Heel", rotor cam, or timing gears.
I hope this helps, take care.......Steve