For a schematic of the Z3801A outer oven controller try here: http://homepage.sunrise.ch/mysunrise/shegnauer/Z3801A/Outer%20Oven%20Controller/z3801a_outer_oven_description.htm
Hope this helps. -- Original Message ----- From: "Magnus Danielson" <[EMAIL PROTECTED]> To: <time-nuts@febo.com> Sent: Tuesday, July 25, 2006 3:32 PM Subject: [time-nuts] Z3801 saga > Fellow timenuts, > > The automation fell in my lap today. The Allan deviation plot show clear > evidence of CW modulation (traditional ripple). Turing over to frequency view > there it is. Actually, it has both varying amplitude and frequency. As > frequency lowers, so does the amplitude in frequency deviation. When it hits > around 450 mHz on the 10 MHz, the Z3801A goes into holdover. > > Now, it seems that there is some source of pumping up and down. I am suspecting > something like the oven control pumping. The longer time it spends the longer > the temperature goes up and down and thus modulate the frequency more and more. > > Somebody sitting there with the outer and inner oven control schematics. I've > only seen parts of the inner one. > > Does this ring a bell somewhere? > > I'm off for a eh... escapade... so I may check email tomorrow morning, but then > I'm out in the woods listening to strange music, drinks, friends... ya now! > > Cheers, > Magnus > > _______________________________________________ > 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
