[time-nuts] OCXO Vref (in)stability plot
    Poul-Henning Kamp 
    phk at phk.freebsd.dk
       
    Mon Apr 22 01:58:19 EDT 2013
    
    
  
In message <7d58cf6b-25de-4e7d-9570-e512a22aa0aa at email.android.com>, Didier wri
tes:
>What is the bandwidth of the measurement?
Very low.
The measurements show here are made with an RC lowpass filter (5k/1µF)
on the output, but it doesn't change the statistical properties of
the noise at all.
Settings on the HP3458A (NPLC,NDIG etc) has no effect either.
I suspect it is the oven-power leaking through.
-- 
Poul-Henning Kamp       | UNIX since Zilog Zeus 3.20
phk at FreeBSD.ORG         | TCP/IP since RFC 956
FreeBSD committer       | BSD since 4.3-tahoe    
Never attribute to malice what can adequately be explained by incompetence.
    
    
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