[time-nuts] retry: PRS10 has spurious frequencies
phk at phk.freebsd.dk
Wed Apr 25 17:27:46 EDT 2007
In message <334B1824-FE52-4E9F-9E3B-40C7C28CCF8D at deriesp.demon.nl>, Henk ten Pi
>2. I was aware of the EMI possibility and tried ferrites on the
>supply and signal wires with no result.
If your powersupply is not very high quality, you are almost certain
to create a ground-loop through the power-cords of the power-supply
and the spectrum analyzer.
That's why batteries are such a good thing: they don't offer a path
for ground loops.
If you have a isolating transformer, you can try that in the signal
cable between the oscilloscope and the PRS10, but it's not as good
as running off batteries.
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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