Yo Tom! On Mon, 18 Jul 2016 18:42:39 -0700 "Tom Van Baak" <[email protected]> wrote:
> Lots of ways to do it. There are GUI tools; command line tools, in C > or Python or Matlab. Got some C or Python? > But to start with I highly recommend using John's TimeLab: > http://www.ke5fx.com/timelab/readme.htm I don't do Windows... And I want this to auto-generate graphs for web pages on RasPi's. Lot's of RasPi's. :-) > Here's a sample 1PPS phase (time interval error) data file (from a hp > 53132A): http://leapsecond.com/pages/MG1613S/log167.txt Yeah, that looks sorta like what I have. > Or here's the same file in a more standard format: > http://leapsecond.com/pages/MG1613S/log167.dat Just the facts there, i can do that. > http://leapsecond.com/pages/MG1613S/log167-adev.gif That's what I think I am looking for. A bit of background. Ntpd generates a number they call the Allan Deviation, but the description looks like the Allan Variation, they describe is as the minima in the Allan Deviation plot, when it has a U shape. They then use that number to set the PLL optimally. Something looks fishy to me, so I want to visualize it, and help the rest of the NTPsec team see it as well. RGDS GARY --------------------------------------------------------------------------- Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703 [email protected] Tel:+1 541 382 8588
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