In Plotter, use the SERIES menu/dropdown to scale the data.
As an example for DMTD, I have to multiply the data times 1e-6:
Gave the new data a name, in the top of the dropdown, then in this case,
enter this formula, in the bottom of the dropdown;
X1*1e-6
where X1 is the data
WHen it gets thru look at the Column 1 box on the right and you will see
a check box with your new data. Uncheck column 1 and Plotter will show
the new data. You can now process or save the new data.
On 8/15/2010 12:25 AM, John Miles wrote:
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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