[time-nuts] Re: Do time nuts only use and measure 10MHz clocks?

[Erik Kaashoek]

Thanks for the input.
After some more testing the coherence turned out to be lost even when the
inputs use the same mixing frequency. The current assumption is that the
two fractional dividers used to generate the two mixer input frequencies,
although using same settings, already cause the loss of coherence. Probably
because they are not started at the same moment so the fractional shifts
happen at different moments. Next test is to us only integer dividers to
generate the two mixing frequencies but this will lead to two IF
frequencies and it is not sure if this can be implemented on the not so
powerful MCU used.
Erik

On Sun, Oct 9, 2022, 11:30 zfe via time-nuts <time-nuts at lists.febo.com>
wrote:

> I did, up to now, not experience a loss in measurement resolution  using
> different frequencies for DUT and REF.
>
>