[time-nuts] State of the art of crystal oscillator measurements
john at miles.io
Thu Aug 11 19:11:05 EDT 2016
Good point, the 'milliwatt' part of 'dBm' takes the E^2/R part out of the math. If we were speaking of dBv/Hz, the system Zo would need to be considered to determine the power.
-- john, KE5FX
Miles Design LLC
> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Richard
> (Rick) Karlquist
> Sent: Thursday, August 11, 2016 3:01 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] State of the art of crystal oscillator measurements
> Zo doesn't matter for these purposes.
> dBm works just as well for 75 ohm systems.
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