:-) 12V found its way onto the ground line. I had a blond moment. My description on this is no where near as spectacular as the the units dying breath. What amazed me was that I contacted them for a the cost of a replacement, and they sent it gratis. BTW I checked out the other one someone brought up here and they are very similar except that the Salae unit doesn't need specific clock connections, instead capturing the timing of all transistions and then post processing in SW. It does have smarter trigger options.