Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-10 Thread Christoph Kopetzky
Hello Dana, thank you for your detailied description. I will try this out in the next days. Scopes became a right normal permanent instrument in the electronics lab of time-nuts like a multimeter for the electrician. Before I connect a counter onto a signalsource which I want to characterize

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-02 Thread ew via time-nuts
yes and 1 ppt is 1 E-12 In a message dated 10/2/2018 3:30:31 PM Eastern Standard Time, k8yumdoo...@gmail.com writes: Hello Bert, What is the cyan-colored trace seen in these screen shots?  And is "1 ppt" the same as 1E-12 (just to be sure)? Are these from LH? Thanks, Dana On Tue, Oct 2,

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-02 Thread ew via time-nuts
Yes they are LH and the blue? is satelite In a message dated 10/2/2018 3:30:31 PM Eastern Standard Time, k8yumdoo...@gmail.com writes: Hello Bert, What is the cyan-colored trace seen in these screen shots?  And is "1 ppt" the same as 1E-12 (just to be sure)? Are these from LH? Thanks, Dana

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-02 Thread Dana Whitlow
Hello Bert, What is the cyan-colored trace seen in these screen shots? And is "1 ppt" the same as 1E-12 (just to be sure)? Are these from LH? Thanks, Dana On Tue, Oct 2, 2018 at 1:46 PM ew via time-nuts wrote: > We see the glitches all the time, they exist and with proper equipment are

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Brent Gordon
The correct cite is arXiv:1711.07917. On 10/1/2018 4:05 PM, Ralph Devoe wrote: This is just what I was trying to do with my paper on "sine-wave fitting", which can be found at arXiv:1711.07911 . Look at the relative phase of two frequency sources using a scope and then plot it versus

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Dana Whitlow
nterested as well > > > > -=Bryan=- > > > > > > From: time-nuts on behalf of Chris > Burford > > Sent: October 1, 2018 6:20 AM > > To: Discussion of precise time and frequency measurement > > Subject: Re: [time-nuts] Osci

[time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Ralph Devoe
This is just what I was trying to do with my paper on "sine-wave fitting", which can be found at arXiv:1711.07911 . Look at the relative phase of two frequency sources using a scope and then plot it versus time. With a digital scope (Digilent Analog Discovery) , there's no reason to take a

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Richard (Rick) Karlquist
: October 1, 2018 6:20 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Oscilloscope-based measurements of frequency stability This sounds interesting enough and I would appreciate any notes or insight on doing this. I have a PRS10 and several GPSDOs that I would

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Bryan _
Interested as well -=Bryan=- From: time-nuts on behalf of Chris Burford Sent: October 1, 2018 6:20 AM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Oscilloscope-based measurements of frequency stability This sounds

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Chris Burford
This sounds interesting enough and I would appreciate any notes or insight on doing this. I have a PRS10 and several GPSDOs that I would like to evaluate for performance on my scope. Many thanks. Dana Whitlow wrote: > I cheered when I saw Dave B's "silly question", for > then I

Re: [time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Christoph Kopetzky
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[time-nuts] Oscilloscope-based measurements of frequency stability

2018-10-01 Thread Dana Whitlow
I cheered when I saw Dave B's "silly question", for then I realized that I'm not the only one who likes to measure things with an o'scope. I had purchased a GPSDO a few weeks before and had been observing its behavior relative to a free- running Rb by watching 10 MHz sinewaves drift with respect