On 06/22/2016 01:25 PM, Jamon Camisso via talk wrote: > On 2016-06-22 17:46, D. Hugh Redelmeier via talk wrote: >> Remember, he truncated the values (grep does not round). >> >> My best guess: the average of the readings would be from a >> distribution centred on 59.996435 (0.005 larger than Lennart >> calculated). It could be as low as 59.991435 or as high as 60.991434, >> assuming six digits of precision in the fraction. I know nothing >> about accuracy of the device. >> >> Summary: the 60Hz hypothesis is not excluded by the evidence. Far >> from it. >> >> P.S. "grep -c" eliminates the need for "wc -l". > and sort/uniq eliminate even more: > > cat /tmp/MGC|sort -n |uniq -c > 16 FREQ value 59.95 > 99 FREQ value 59.96 > 282 FREQ value 59.97 > 464 FREQ value 59.98 > 459 FREQ value 59.99 > 385 FREQ value 60.00 > 302 FREQ value 60.01 > 144 FREQ value 60.02 > 68 FREQ value 60.03 > 3 FREQ value 60.04 > --- > Talk Mailing List > [email protected] > https://gtalug.org/mailman/listinfo/talk
Another question is how accurate is the device doing the measurements. If this is a UPS then the monitoring is not designed for accurate frequency measurements. Get out your 6+ digit frequency counter and then run the tests. -- Alvin Starr || voice: (905)513-7688 Netvel Inc. || Cell: (416)806-0133 [email protected] || --- Talk Mailing List [email protected] https://gtalug.org/mailman/listinfo/talk
