Re: [time-nuts] Measuring 10 MHz accurately: correction

07, 2008 5:13 PM To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Measuring 10 MHz accurately: correction Bruce Griffiths wrote: Martyn Smith wrote: Hi, Two questions for all of you today. 1st Question I can measure 10 MHz frequency to an accuracy of about 2

[time-nuts] Measuring 10 MHz accurately.

Hi, Two questions for all of you today. 1st Question I can measure 10 MHz frequency to an accuracy of about 2 parts in 10E-12 in a one second gate time. I use a SR620 time interval counter and make a timeAB measurement. I make two measurements of phase (between my UUT and my reference) and

Re: [time-nuts] Measuring 10 MHz accurately.

- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Martyn Smith Gesendet: Mittwoch, 7. Mai 2008 18:52 An: time-nuts@febo.com Betreff: [time-nuts] Measuring 10 MHz accurately. Hi, Two questions for all of you today. 1st Question I can measure 10 MHz frequency

Re: [time-nuts] Measuring 10 MHz accurately.

At 10:20 AM 5/7/2008, Ulrich Bangert wrote: Martyn, 2 parts in 10E-12 in a second's gate time would require to measure the time interval with an 2 ps resolution. Since the SR620 (at least mine) features a 20 ps single shot resolution, i fear your number is more likely 20 parts in 10E-12. Or what

Re: [time-nuts] Measuring 10 MHz accurately.

What is the difference between 1E-12, 10E-12, and 10^-12? Ed, K1GGI snip 2 parts in 10E-12 snip ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the

Re: [time-nuts] Measuring 10 MHz accurately.

Ed, k1ggi wrote: What is the difference between 1E-12, 10E-12, and 10^-12? A little imprecision in the nomenclature, but it all should mean the same thing. 1 part in 10E12 is the same as saying 1 part per 10E12. It is the fraction: 1/[10E12], or 1.0 x 10E-12 ... snip 2 parts in 10E-12

Re: [time-nuts] Measuring 10 MHz accurately.

Hi Martyn, you may be able to use a Wavecrest DTS-2070 or better DTS-2075 Time Interval Analyzer for this. It has up to 40K samples/second capture capability, with +/-25ps single-shot accuracy, 10ps RMS noise, and 800 Femtoseconds resolution. If you can capture the data via GPIB, you

Re: [time-nuts] Measuring 10 MHz accurately

Ed wrote: What is the difference between 1E-12, 10E-12, and 10^-12? E means raised to the power of ten. x E y is shorthand for X * 10^y. (See http://en.wikipedia.org/wiki/E_notation#E_notation) 1E-12 and 10^-12 are the same number, specifically 1,000,000,000,000. 10E-12 is one order of

Re: [time-nuts] Measuring 10 MHz accurately.

- Von: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Im Auftrag von Martyn Smith Gesendet: Mittwoch, 7. Mai 2008 18:52 An: time-nuts@febo.com Betreff: [time-nuts] Measuring 10 MHz accurately. Hi, Two questions for all of you today. 1st Question I can measure 10 MHz frequency to an accuracy of about

Re: [time-nuts] Measuring 10 MHz accurately: correction

Bruce Griffiths wrote: Martyn Smith wrote: Hi, Two questions for all of you today. 1st Question I can measure 10 MHz frequency to an accuracy of about 2 parts in 10E-12 in a one second gate time. I use a SR620 time interval counter and make a timeAB measurement. I make two

Re: [time-nuts] Measuring 10 MHz accurately.

Martyn Smith wrote: Hi, Two questions for all of you today. 1st Question I can measure 10 MHz frequency to an accuracy of about 2 parts in 10E-12 in a one second gate time. I use a SR620 time interval counter and make a timeAB measurement. I make two measurements of phase (between my