I'm using three of the A/D inputs on the MPVI Pro. I'm having good luck with the 0-5V signals from my WB and from my boost sensor. I'm having some strange results from the piggyback timing computer. It has a 0-5V signal line out I'm feeding into EIO 3. The output itself doesn't do any averaging on the signal. It might put out 0.33 V for two revolutions and then 0 V for a bunch of revolutions. It looks like the sample interval for the A/D inputs on the MPVI Pro is about 100 ms. If I'm at 3500 RPM, for example, that would be 34 ms at 0.33v and 66 ms at 0v.
What am I going to see in the datalog? Would I see 0v some of the time and 0.33v some of the time, proportional to how often the timing computer sent out 0.33v and how often it sent out 0v?
Or would the MPVI Pro A/D input average it and give me 0.1v?
(Apologizing in advance if this is covered somewhere--I did try and look. If it is explained elsewhere just share a link.