> Hi Bruce, > > again, I did say in my original post that my math only works if their noise > is Gaussian, and that I did not know if it was. > > Also, please note that they do claim 25ps Accuracy , and 800 femtoseconds > Hardware resolution, not the other way around.
Said, One way to settle this is for you to collect a data set of back-to-back single-shot time interval samples over GPIB and have a look at the data. Even a hundred samples is enough; it will take a fraction of a second; probably limited by GPIB speed. Doing this with a 5328, 5334, 5370, 5371, 53132, or 620, etc. clearly shows what the native resolution of these machines is. Do not use an averaging mode. All of the above TIC allow averaging, and yes, with averaging you get a significant gain in apparent resolution. But we're talking here about the single-shot resolution of the hardware. Related to that, about how many single-shot samples per second can you get out of a Wavecrest? /tvb _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts