The trouble with averaging GPS 1PPS is that it needs to be done for multiple of 12h periods to counter the systematic effect of reception conditions.
I found that simply recording the 1PPS timings and comparing raw samples with 86400 seconds intervals and _then_ averaging to be the best strategy. Usually what I do is to make the 1PPS from the GPS be the start signal to my HP5370B and feed the 5 or 10MHz signal to stop. The dataset needs to be collected on a computer (via GPIB) and any cycle shifts in the 5/10 MHz needs to be resolved before the comparison can be done. -- 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 [EMAIL PROTECTED] https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
