Video: Picoscope Custom Probes — Relative Compression Test and Analysis with a Current Probe

Hi Scott: When Matt was at our office a few years ago, he went over Custom Probes and some other items. I wished it was recorded. Now, it is. Thanks, for sharing. Guido

Thank you for the information. It is much appreciated guys.

Scott, that's a Fluke Y8100 current probe being used, correct? I ask because it appears that the opening in the jaws is larger than a typical low amp probe, which got my attention. Worth trying to find one used?

Hi Tyler, Yes that's the probe and this one is 25+ years old and still works great!

Hi Scott, great video, thanks to you and Matt for doing it. Just wanted to say it wouldn't open on Internet Explorer. I got a message "no compatible source was found for this media" but it plays fine when I switch to Chrome. Not a big deal but in case someone else has the same problem. Or maybe it's just something on my end. The relative compression test with in-cylinder pressure transducer

Hi Allan, Can you provide me with the version of IE you're running? It's very possible that Chrome is more current than your version of IE. Yeah Matt did a great job and we have a few more videos coming! Thanks for the editing comment, it works like you would expect! ;)

Hi Scott, thanks for the reply. Yeah I'm using an older version of IE …, it's on my laptop that I use for mobile calls. It does what I need it to do and if it doesn't I can switch to Chrome.

This was a fantastic video guys. I love the explanation for why there's more starter effort on the first good cylinder following a weak contributing cylinder. I believe Matt referred to it as an air spring effect. Thanks guys!

I agree Brin. I always attributed the higher current after a low cylinder to increased crank speed but the way Matt explained it makes a lot of sense.