[time-nuts] State of the art of crystal oscillator measurements
mfeher at eozinc.com
Thu Aug 11 19:14:30 EDT 2016
That is why I asked what the Po was. Where did the 177 come from? L(f) is single sided. This is not my first "rodeo" in these matters. 73 - Mike
Mike B. Feher, EOZ Inc.
89 Arnold Blvd.
Howell, NJ, 07731
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of John Miles
Sent: Thursday, August 11, 2016 4:22 PM
To: 'Discussion of precise time and frequency measurement'
Subject: Re: [time-nuts] State of the art of crystal oscillator measurements
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
> -----Original Message-----
> From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Mike
> Sent: Thursday, August 11, 2016 12:51 PM
> To: 'Discussion of precise time and frequency measurement';
> KA2WEU at aol.com; tvb at leapsecond.com
> Cc: enrico.rubiola at gmail.com
> Subject: Re: [time-nuts] State of the art of crystal oscillator
> kT is indeed relevant for a physical implementation. - Mike
> Mike B. Feher, EOZ Inc.
> 89 Arnold Blvd.
> Howell, NJ, 07731
> 732-886-5960 office
> 908-902-3831 cell
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