From: "Pete" <[EMAIL PROTECTED]> Subject: Re: [time-nuts] time stamping counters Date: Sat, 29 Dec 2007 16:38:38 -0700 Message-ID: <[EMAIL PROTECTED]>
Pete, > I have attached a file of zero crossing times for > a 1KHz zero crossing detector taken with my PM6681. This data is interesting > because it > records back-to-back events (zero dead-time) > using the "picket fence" method published by > Greenhall (in 1989). This back-to-back data allows me to calculate the Allan > deviation > correctly. I was also able to use the time- > stamping results to insure the record included > the correct number of points, with no gaps. You should consider using TimeView. See below. > I think the PM6691 has this capability built-in. > Can you tell me if this is true? This is true. > If it is true, what is the maximum rate of capture for zero dead- > time (TI) data? 8000 measures per second according to datasheet. > How many data points can be captured in each record? To direct memory, 6100. Using TimeView you keep pumping data out of it. First see: http://www.pendulum-instruments.com/Assets/pd/pd_CNT-81_81R.pdf Then go to: http://www.pendulum-instruments.com/eng/htm/software.php TimeView will do Allan Deviation for you, among other things. The version you download works, but lack print and save. Cheers, Magnus _______________________________________________ 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.
