Fellow time-nuts, Just for fun I have been looking at the mains as a time-reference.
I've used an OSA 8600 as reference and divided down to PPS by a TADD-2. While not absolute time reference, it is way quieter than the mains so I think it is good enough to have some fun at least. Just to illustrate the issue.
I use a HP5335A to measure the time from PPS to rising edge of 50 Hz as being accessible through a transformer.
The ADEV has a peak at 30 s measuring 2,3E-4 and another at 6000 s measuring 4,3E-4.
The phase changes over -0.11923 to +10,979 so a time difference peak-to-peak of 11,098 seconds.
While I could refine my measurements to ensure trigger jitter is not causing any major issues, the ADEV slope from 1 s is rising rather than lowering, so it rather seems like source behaviour dominates.
While this attempt is a hack, I hope it inspires people to fiddle around a little. :)
Cheers, Magnus _______________________________________________ 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.
