God middag Magnus, On Thu, 14 Apr 2016 03:38:38 +0200 Magnus Danielson <mag...@rubidium.dyndns.org> wrote:
> The professional equipment does it this way. It samples, filters and > decimate the data. For the professional use the absolute phase is > relevant, so group delay needs to be flat, known an > calibrated/compensated. Jupp, I am aware of those. But I didn't expect many people here to know of them :-) I have quite a few friends who work in the energy distribution busines and its related problems (like network stability, oscillations of dynamic systems, complexity theory etc) hence I have a cursory interest in the equipment to monitor power networks as well. It is intersting to see, that modern power networks rely more and more on precise timing as well. Even more interesting is that the primary source for time is GPS these days, with all its problems. I am not sure whether the desginers of these networks are fully aware of the security and reliability implications that come with GPS (or GNSS in general). Maybe i should dig a little bit around and see what's current common practice in europe. Attila Kinali -- It is upon moral qualities that a society is ultimately founded. All the prosperity and technological sophistication in the world is of no use without that foundation. -- Miss Matheson, The Diamond Age, Neil Stephenson _______________________________________________ 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.