Thanks, Tom! Apart from the specifics with TimeView, how does one go about measuring ADEV with a counter that does have a dead-time? Are there tricks that can be played, either with a special measurement setup or with some data postprocessing? Or with two counters that are somehow made to cooperate?
Sorry if I'm asking the obvious, you can see that I'm a greenhorn. ;-) Cheers Stefan -----Ursprüngliche Nachricht----- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Tom Duckworth Gesendet: Donnerstag, 23. Oktober 2008 22:19 An: 'Discussion of precise time and frequency measurement' Betreff: Re: [time-nuts] Measuring ADEV with a PM6681 or CNT-81 Stefan, I am retired from Pendulum Instruments and could answer your question but I have instead refered your question to a current engineer with the company and you should receive an answer from them shortly. They are the experts for this question. Tom Tom Duckworth 510-886-1396 -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Heinzmann, Stefan (ALC NetworX GmbH) Sent: Thursday, October 23, 2008 10:12 AM To: [email protected] Subject: [time-nuts] Measuring ADEV with a PM6681 or CNT-81 Hi all, I hope you can clear up some confusion that I have regarding ADEV measurement. I was under the impression that you need a counter that is able to timestamp each rising edge of the clock under test, or equivalently measure period time continuously with no dead time. Now, while the CNT-90 can do this, the CNT-81 ( = PM6681 ) can't. Still, a message last December to the list here (http://www.mail-archive.com/[email protected]/msg10963.html) seems to indicate that using TimeView you can have ADEV plotted with the "lesser" model, too. I have a PM6681 and TimeView, but I couldn't find out how to do it. Maybe it can't be done. So what's the deal on this? Can it be done, with or without TimeView, and if yes, how? If this has been answered earlier, a link would be just fine. Thanks and cheers Stefan _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
