-------- In message <54ee7bdd-0a49-cc49-540d-2812e70dd...@rubidium.dyndns.org>, Magnus Danielson writes:
>Wither it is proper side bands or other systematic noise, it is bad >indeed, [...] It's more subtle than that, it can be things like thresholds in the counters trigger being sensitive to the phase of the internal clock because of (very slight) cross-talk. I reported data on this a couple of years ago, as I recall my setup were something like this: House-10MHz --> HP3336C clk-in and HP5370B clk-in. HP3336C output -> HP5370B start then 3m coax then HP5370B stop. Measure TI(start->stop), for different settings of output phase angle on the HP3336C. Theoretically that plot should be a flat line. In practice it is not even close. I think I convinced myself that the majority of the problem was trigger-noise the HP5370B, but my notes are not accessible at this time. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@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. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
