Hey Jason, I didn't take that much notice to tell you the truth but it did dither very very slightly - I wouldn't say it was moving much at all. It is supposed to oscillate some as the OXS box responds to the O2 sensor I believe. My O2 sensor is brand new. When the worn out O2 sensor was in the meter read almost nothing. I would like to find out if the measurement on the meter now is in fact correct.
Have you seen tirwin's write up?
http://forums.pelicanparts.com/porsche-911-technical-forum/758788-cis-troubleshooting-dummies-2.html