[time-nuts] Inside a CTS 1960017 OCXO

[Rob Sherwood.]

I would have to make the measurement again with the HP supply off.
I have measured my Rubidium and my GPSDO and never seen anything like this spectra of close-spaced spurious. 
I'll send you some more data direct.
Rob
NC0B


-----Original Message-----
From: time-nuts [mailto:time-nuts-bounces at febo.com] On Behalf Of Hal Murray
Sent: Saturday, February 27, 2016 3:32 PM
To: Discussion of precise time and frequency measurement
Cc: hmurray at megapathdsl.net
Subject: Re: [time-nuts] Inside a CTS 1960017 OCXO




rob at nc0b.com said:
> I cannot say exactly, as I measured it as 59 Hz.  VA7OJ measured it as 
> 60 Hz.  I was using an HP lab supply, and Adam was using some other lab supply.
>  I put a 500 uF capacitor across the Vcc pin and it had no effect.  I 
> don't think it has anything to do with the power supply since both of 
> us saw the same thing. ...

How much line noise is floating around the lab?  What does the spectrum analyzer see if you power off the DUT?




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