The document cited is full of plausible sounding but misleading information, if you want really low jitter. This type of oversimplification of the problem was present when the HP53131 series counters were designed, with the result that the Allan deviation of an external 10 MHz reference is degraded to only a part in 10^11 at 1 second.
Rick Karlquist jimlux wrote: > John Ackermann N8UR wrote: >> Wenzel has some discussion and circuits at: >> http://www.wenzel.com/documents/waveform.html. >> >> The Shera GPSDO made clever use of the input circuit of a 74HCT4046 PLL >> chip for squaring. >> >> John >> ---- >> > > Doh... I was thinking that there was some vendor with ap notes on stuff > like this, and I couldn't recall who it was, and I'm actually looking at > a Wenzel OCXO sitting here on the desk. > > _______________________________________________ > time-nuts mailing list -- [email protected] > To unsubscribe, go to > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. > > _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
