[time-nuts] PicTic Data

John Miles jmiles at pop.net
Sun Aug 15 05:25:49 UTC 2010


> Thanks for looking at my data that was what I was fishing for all
> along :-)

You can import it the same way, actually -- install the TimeLab beta at
www.ke5fx.com/timelab/setup.exe and use File->Import ASCII Phase Data to
read your file.  Set Nominal Frequency to 1, Numeric Field # to whichever
field contains your time data (2 for capture.txt), and the 'x' field to
250E-12 to convert to seconds.  That should give you the same graph I
posted.

Ulrich Bangert's Plotter application is also good for this sort of thing,
although I don't immediately see how to make it scale the data by 250E-12 to
convert it to seconds.

> I was looking at the article:
>
> "A Small Dual Mixer Time Difference (DMTD) Clock Measuring System
> W.J. Riley "
> Richard posted
>  
> And thinking it would be nice to do the DSS and Mixer boards to
> go with the
> pictic II.
>  
> Or changing the Pictic II to use the Acam TDC GP2 Time to Digital
> Converter; 2
> channel w/65 ps resolution now under $30. as Bruce suggested a while back.
>  
> My wants sure exceed my cans ;-)

Once lower measurement floors are desired and the system grows in complexity
and cost, other approaches besides TICs start to look more appealing.  For
what it does, though, this is a really nice little board.

-- john, KE5FX




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