[time-nuts] Allan Deviation recipe?

[Tom Van Baak]

Gary,

Lots of ways to do it. There are GUI tools; command line tools, in C or Python or Matlab.

But to start with I highly recommend using John's TimeLab:
http://www.ke5fx.com/timelab/readme.htm

Here's a sample 1PPS phase (time interval error) data file (from a hp 53132A):
http://leapsecond.com/pages/MG1613S/log167.txt

Or here's the same file in a more standard format:
http://leapsecond.com/pages/MG1613S/log167.dat

Use TimeLab->File->Import ASCII. If you can't figure out the boxes let us know.
Then all you do is type p or f or a or t to cycle through phase, frequency, ADEV or TDEV plots.

You will see something like this:

http://leapsecond.com/pages/MG1613S/log167-phase.gif
http://leapsecond.com/pages/MG1613S/log167-freq.gif
http://leapsecond.com/pages/MG1613S/log167-adev.gif
http://leapsecond.com/pages/MG1613S/log167-tdev.gif

/tvb

----- Original Message ----- 
From: "Gary E. Miller" <gem at rellim.com>
To: "time-nuts" <time-nuts at febo.com>
Sent: Monday, July 18, 2016 6:12 PM
Subject: [time-nuts] âo~Allan Deviation recipe?

Yo time-nuts!

I have a lot of logs of PPS offset data.  Basically system clock time
and PPS offset pairs.

Does it make sense to turn this data into an Allan Deviation plot?

If so, does anyone have a script or program to prepare the data
for gnuplot?

TIA.

RGDS
GARY
---------------------------------------------------------------------------
Gary E. Miller Rellim 109 NW Wilmington Ave., Suite E, Bend, OR 97703
 gem at rellim.com  Tel:+1 541 382 8588