Hi The counter and offset generator both should be quite accurate at a 1 us offset. That’s large enough that you are outside the range of most GPS jumps. If you are going to move things around, you might as well move out to that vicinity.
Bob On Nov 21, 2013, at 6:20 AM, Tom Van Baak <t...@leapsecond.com> wrote: >> Below is a plot so you could see exactly what I measured. What is peculiar >> is that the time jumps by exactly 100ns to 200ns. Almost as if the GPS >> receiver decides to offset the time by twice the amount I set it to. Which >> is why I initially thought it might be a firmware thing. I suppose >> multipath is a good explanation, it is just odd that the time error is >> exactly 100ns. > > Hi Stephan, > > A quick test you could perform is set the offset to 125 ns instead of 100 ns > and see if the jumps still occur, still occur at 100 ns, or now occur at 125 > ns. > > Since you have three M12's offset the third one by 150 ns and see if it > experiences jumps too. > > Question -- are you using the external 10 MHz reference input or output for > any of your 53131A counters? > > /tvb > > _______________________________________________ > 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. _______________________________________________ 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.
