I think you might be overthinking their point, that if you plan to use an xDEV as a measure for state of health, don't use years worth of data. Otherwise it could be days before the xDEV visually changes.
On Fri, Jan 13, 2017 at 11:04 AM, Bob Camp <kb...@n1k.org> wrote: > Hi > > There’s an interesting comment buried down in that paper about limiting > ADEV to > < 300 samples per point. Their objective is apparently to better highlight > “systematic > errors”. I certainly agree that big datasets will swamp this sort of > thing. I’m not quite > sure that I’d recommend ADEV to find these things in the first place. My > guess is that > it’s the only spec they have to call the device good or bad in this case > …They don’t seem > to have Hadamard in their list of variances. If I was going after > systematics with a deviation, > that’s the one I’d use. Of course I probably would not use a something-dev > in the first place. > > Bob > > > > On Jan 13, 2017, at 1:52 AM, Ole Petter Ronningen <opronnin...@gmail.com> > wrote: > > > > Hi, all > > > > The question of phase shifts in cables pops up every now and then on this > > list - I stumbled across a good table of measured phase shifts with > > temperature in different cable types in this paper: > > http://www.ira.inaf.it/eratec/gothenburg/presentations/ERATEC_2014_ > PresentationWSchaefer.pdf > > that I though would be of interest to others. > > > > A quick summary given below, see pdf for full details. Lots of other > > interesting stuff in there also. > > > > Values in ppm/K, for 10 Mhz except when otherwise stated. (The paper > gives > > values for 5, 10 and 100Mhz) > > > > Huber-Suhner Multiflex 141: -6 > > RG-223: -131.9 > > Semiflex Cable: -11.5 > > Huber-Suhner: -8.6 > > Times Microwave LMR-240: -3.4 > > Times Microwave SFT-205: 7.7 > > Meggitt 2T693 SiO2: 30.6 > > Andrew FSJ-1 (@5Mhz): 25 > > Andrew FSJ-4 (@5Mhz): 10 > > Andrew LDF-1P-50-42: 2.8 > > Andrew LDF4-50A: 4.7 > > Times Microwave TF4FLEX (@100Mhz):6.4 > > Phasetrack PT210 (@100Mhz): 2 > > > > Ole > > _______________________________________________ > > 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. > _______________________________________________ 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.