[time-nuts] Of rubidium life and piggy-bank anemia....
didier at cox.net
Sat Dec 1 09:28:09 EST 2007
I knew we had that conversation before, you gave me your scripts when I was
writing my Visual Basic program to do the same thing under Windows. This
program is in a perpetual state of being messed with to reach ever changing
objectives, but I have been using it for various logging experiments.
I bought my HP 59307A for something like $10 on eBay.
> -----Original Message-----
> From: time-nuts-bounces at febo.com
> [mailto:time-nuts-bounces at febo.com] On Behalf Of John Ackermann N8UR
> Sent: Saturday, December 01, 2007 7:35 AM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] Of rubidium life and piggy-bank anemia....
> Didier Juges said the following on 12/01/2007 12:56 AM:
> > Maybe quasi-simultaneously is adequate, using a switch to
> sample the 3
> > pairs in rotation.
> > The HP59307A can be used for that under GPIB control.
> If anybody's interested, I have a perl script (running under
> Linux, using the linux-gpib tools) that controls a 59307A and
> HP 5334A to do long-term logging of four PPS sources against
> each other.
> It takes a 100 second average of each PPS source
> sequentially; I end up with six log files, each with a tau of
> 600 seconds: CS1-GPS, CS2-GPS, RB1-GPS, CS1-CS2, CS1-RB1, and CS2-RB1.
> If anyone's interested, I'd be happy to make that program
> available, though it's not polished up for distribution.
> The data files from this program are the basis for phase and
> adev plots at http://www.febo.com/plots/ which are updated
> hourly. The software that generates those plots is called
> stable-stats and is available for download at
> http://www.febo.com/time-freq/tools/. (Unfortunately, at the
> moment the plots are out of date as we had a power failure
> last week and I don't have the clocks reset yet; that's a
> project for this weekend.)
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