[time-nuts] State of the art of crystal oscillator measurements

Richard (Rick) Karlquist richard at karlquist.com
Thu Aug 11 18:00:39 EDT 2016

Zo doesn't matter for these purposes.
dBm works just as well for 75 ohm systems.

On 8/11/2016 1:22 PM, John Miles wrote:
> Remember that L(f) is expressed in dBc/Hz, not dBm/Hz.  If it were dBm/Hz, then kT would be the limit.  But in dBc/Hz terms, the limit is 177 + the DUT's output power in dBm.
> Assuming a 50 ohm system, of course.
> -- john, KE5FX
> Miles Design LLC

More information about the time-nuts mailing list