[Matt Krass]

Originally Posted by Alan Anderson

Did you double-check the nonfunctioning encoders with the oscilloscope after you determined that none of the Jaguars would read them?

We checked them multiple times with the scope as a result of them being unreadable. The waveforms looked correct (both channels were clearly in quadrature and reacting correcting to wheel rotation in both direction) and the waveforms looked clean, sharp rises and falls in the correct voltage range. We swapped them out with a similar but different optical encoder module and the Jaguars started responding, I have not had a chance to 'scope out the newly working encoders to see how the waveform compared. I'm hoping an opportunity will present itself to bring in my DSO and capture the working and non-working signals for later analysis, but given that we're in the heat of build season, I don't see that happening unfortunately.

Though I have to admit, I'm really very curious as to why the Jaguars could not read the signal, so I will be trying to get back to it.

Matt