Ed,
Thank you very much for your detailed analysis. You are right - I am having trouble interpreting the graph. I am pretty much a newbie-time-semi-nuts. Your discussion of the graph really helps. I will take time to read section-by-section tomorrow as it is getting late here in Eastern US. (Florida)
JUST few hours ago, I finally managed to set up GPIB with TimeLab to talk to HP52132A, so I don't have to rely on serial. I don't yet know if that will mean anything in terms of measurement. I does allow me to use other equipment with TimeLab though.
I am thinking, use of GPSDO as clock was a bad idea. As they are completely different GPSDO, I have two oscillators (standard and DUT) that's yanked all over the place. Maybe that's the missing piece in this puzzle. I am thinking maybe I'll just use double oven Xtal. Initial idea was, this combination of GPS and Rb will give me the stability and accuracy that I wanted.
I have a FTS4040A Cesium. Should I use THAT instead?? By the way, the signal being compared is a sine 10MHz, and the trigger is AC coupled. Actually, I didn't even think about that, so I will review it in depth.
Thanks again,
Taka
ps. In a perfect world, everyone has a Hydrogen Maser or two. Hello, tvb...