Hi Poul-Henning, 1. It is not a stupid question but a very valid one.
2. I was aware of the EMI possibility and tried ferrites on the supply and signal wires with no result. 3. I will try batteries but have to find enough of them. 4. On the spectrum analyzer, I checked the amplitude setting and 10dB change gave 10dB change of signal level. Also a mixer level change had no influence on the spurious. Henk On Apr 25, 2007, at 22:07, Poul-Henning Kamp wrote: > > I'm going to ask a seemingly stupid question, but bear with me: > > Are you sure those signals are really present on the output ? > > The reason why I ask is that you are in a frequency territory where > EMI is both radiated and conducted so you have to be really careful > with your setup, grounding in particular, to make sure you do not > actually measure the PRS10 acting as an antenna. > > The best way to ensure this, is to run your PRS10 off batteries, > Sealed Lead Acid for instance, and the only other connection to > the PRS10 should be the coax to the spectrum analyzer. > > Poul-Henning > > -- > Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 > [EMAIL PROTECTED] | TCP/IP since RFC 956 > FreeBSD committer | BSD since 4.3-tahoe > Never attribute to malice what can adequately be explained by > incompetence. > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
