The now freely available Stable32 has Hadamard, overlap Hadamard, Hadamard total.
On Mon, May 28, 2018 at 9:17 PM, Richard (Rick) Karlquist <rich...@karlquist.com> wrote: > I have a Tek FCA3103 300 MHz counter that measures ADEV > as a built in function. When I bring up the settings > menu for the measurement, it has an entry window for > "tau" (the averaging time, IE "sigma sub y of tau"). > It defaults to 200 ms. I can enter larger values and > ADEV gives reasonably results. However, if I enter > smaller values, even 199 ms, I don't get any error > on the display, but I get clearly erroneous > results for ADEV. I read the manual and cannot find > anything to the effect that the instrument doesn't work > for less than 200 ms. > > BTW, I asked Tek "customer no support" about it and > they were clueless. > > 1. Is this pilot error? Can anyone tell me the trick? > > 2. Can anyone recommend a 300 MHz counter that measures > ADEV, correctly :-)? Bonus question: a counter that > measures Hadamard variance? > > 3. Can anyone recommend a 300 MHz counter that can > measure ADEV and Hadamard using off the shelf software > that runs on a PC? I don't write software :-) > Bonus question: software to make these measurements > that works with the FCA3103 that I already have? > > I have an NI GPIB-USB-HS to interface the counter > to the PC running the software if that helps. > > > > Thanks > > Rick N6RK > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.