On Sun, Feb 9, 2014 at 4:27 PM, M. Simon <[email protected]> wrote:
> Tom, > > I was hoping for 1E-5 precision or better. My time stamping counter will > have a 30 MHz clock (for convenience). I think noise will not allow that level of accuracy with only one time stamp per cycle. I think you'd be better off making many samples per cycle. Taking 48,000 samples per second give 800 samples per cycle. 48K is the "standard" sample rate for audio used with video. Likely your computer already has the means to sample two audio signals at 48K samples per second. It is not taxing on any modern computer or even for a smart phone. Doing this on my iMac is so trivial I don't bother to save the setup. I have an audio interface to samples 24 bits at 96K SPS. I placed a 1 volt peak to peak signal on it and then brought up a spectra display. I can log the spectra to a file. This kind of software is available for free. Chris Albertson Redondo Beach, California _______________________________________________ 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.
