Re: [time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-16 Thread Mark Goldberg
On Sat, Dec 16, 2017 at 7:36 AM, Gerhard Hoffmann wrote: I'm about to buy a RedPitaya Stemlab 125-14. Cost is just €310 in .de, > seems to have respectable performance, can emulate the > GnuRadio hardware boards more or less right out of the box, > Win & Linux. > > And it is a nice stepping ston

Re: [time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-16 Thread Mark Goldberg
On Sat, Dec 16, 2017 at 3:57 AM, Attila Kinali wrote: > > > Apparently the Perseus is supported by GnuRadio[1]. Which means you can > just click your control system together (similar to LabView). According > to [2] the driver uses libusb and works on windows as well. > > If you want to use GnuRad

Re: [time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-16 Thread Gerhard Hoffmann
Am 16.12.2017 um 11:57 schrieb Attila Kinali: [1] "Oscillator metrology with software defined radio", by Sherman and Jördens, 2016 https://arxiv.org/abs/1605.03505 I have seen this paper before. Unfortunately, it is a lot more work to implement than what I have already done. I am really a h

Re: [time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-16 Thread Attila Kinali
On Fri, 15 Dec 2017 10:08:29 -0700 Mark Goldberg wrote: > > The approach using FFT works, but just using the peak frequency, you throw > > away half of the data (the phase) and also limit yourself in precision > > to the bin width. It's not 100% clear that estimating the frequency > > using an FF

Re: [time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-16 Thread Mark Goldberg
Thanks for the detailed response. On Fri, Dec 15, 2017 at 5:42 AM, Attila Kinali wrote: > Hey Mark > > On Wed, 6 Dec 2017 15:43:49 -0700 > Mark Goldberg wrote: > > > https://sites.google.com/site/perseusmods/ > > and > > https://sites.google.com/site/spectrumlabtesting/ > > > > using wide FFT b

Re: [time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-15 Thread Attila Kinali
Hey Mark On Wed, 6 Dec 2017 15:43:49 -0700 Mark Goldberg wrote: > https://sites.google.com/site/perseusmods/ > and > https://sites.google.com/site/spectrumlabtesting/ > > using wide FFT bins and Spectrum Lab's peak frequency interpolation > function. I would appreciate comments as to the effect

[time-nuts] Determining Allan Deviation From Interpolated Peak Frequency Readings

2017-12-06 Thread Mark Goldberg
I am making frequency measurements as described on the following pages: https://sites.google.com/site/perseusmods/ and https://sites.google.com/site/spectrumlabtesting/ using wide FFT bins and Spectrum Lab's peak frequency interpolation function. I would appreciate comments as to the effectivenes