Re: [time-nuts] modification Lucent RFTG

Joerg, It all looks good to me. I didn't notice any problems at all with the English text. Much easier to follow with the improved pictures. I notice that the annotations on the picture for the German version are the same as the English version now. Very little that would change ("move" and

Re: [time-nuts] Phase noise from Allan Deviation ?

Hi ADEV to phase noise can be full of gotcha’s. What you have out of your system is a series of phase samples. You don’t *have* to convert those samples to ADEV. There are a whole bunch different variances you can calculate. The best thing to do (by far) is to save the phase samples. That way

Re: [time-nuts] Phase noise from Allan Deviation ?

Yes. I was not overly pleased with the performance of my 2700's. I ended up pulling the PRS10 out of one of them and purchased the breakout connector board from SRS and used the resulting 10 MHz and 1 PPS outputs.From time to time I would sync the unit to one of my GPSDO's using the 1

Re: [time-nuts] Phase noise from Allan Deviation ?

Rick, On 12/14/2015 07:04 AM, Richard (Rick) Karlquist wrote: On 12/13/2015 7:15 PM, Tom McDermott wrote: It brings up a question: Is it possible to estimate the phase noise of that internal crystal from the ADEV measurements? There are a bunch of papers that go the other way: from Phase

Re: [time-nuts] modification Lucent RFTG

Jorg Excellent improvement.Now I can easily see the cap that was removed and whats left is the glue from manufacturing. It makes sense. Regards Paul WB8TSL On Sun, Dec 13, 2015 at 4:59 PM, Jörg Logemann wrote: > Rex, > I made some modifications to my article and I hope,

Re: [time-nuts] Phase noise from Allan Deviation ?

Hi One of the reasons the TS2700’s went out of favor is the “quality” of the CDMA signals available. The design assumption was that the CDMA carriers provided timing as good as GPS on their over the air systems. After the units had been in the field for a while it became apparent that the

Re: [time-nuts] Mechanical clock sound pickup circuit

Hello. One answer for all. > Peter > The watch or clock produces many sounds during its operation and the issue > is selecting the required one. As you wish to investigate the timing I noticed it, unfortunately it seems that often the different sounds are very similar in level. I'm thinking

Re: [time-nuts] Phase noise from Allan Deviation ?

On 12/13/2015 7:15 PM, Tom McDermott wrote: It brings up a question: Is it possible to estimate the phase noise of that internal crystal from the ADEV measurements? There are a bunch of papers that go the other way: from Phase Noise to Adev. Searching brings up only one paper that goes

Re: [time-nuts] Phase noise from Allan Deviation ?

Tom, On 12/14/2015 04:15 AM, Tom McDermott wrote: I've constructed a homebrew setup to measure time intervals using a software defined radio. Basically a single-channel downconversion to about one hertz, then count samples from the SDR clock to time stamp the zero crossings. This is done in

Re: [time-nuts] Phase noise from Allan Deviation ?

Hi Tom, On 14/12/15 03:15, You wrote: I've constructed a homebrew setup to measure time intervals using a software defined radio. Basically a single-channel downconversion to about one hertz, then count samples from the SDR clock to time stamp the zero crossings. This is done in gnuradio and

Re: [time-nuts] Phase noise from Allan Deviation ?

>From PN to ADEV you integrate under the PN-curve with a certain weighting-function. This paper shows the weighting function: https://www.researchgate.net/publication/6308454_Considerations_on_the_measurement_of_the_stability_of_oscillators_with_frequency_counters to go the other way around you

Re: [time-nuts] Phase noise from Allan Deviation ?

Tom wrote: The 'unknown' is a Rubidium oscillator locked to CDMA pilot (TS2700) There is very little information publicly available on the Symmetricom "BesTime" engine ("BTE"), but after playing with a few TS2700s for quite some time, including monitoring a number of internal signals,