Said wrote: > For such a large phase error I would have expected the PRS10 to just reset
> the 1PPS rather than drift it. The PRS10 uses a straightforward second order PLL to lock itself to an external 1PPS, so you will see a frequency error on phase jumps as it has to slew the frequency to get back on phase. There's a quite detailed description of the PLL in the manual. Incidentally, it is my experience that the PRS10 behaves fairly poorly if you simply feed it 1PPS without sawtooth correction. I'm in the midst of a move so I can't relate numbers at the moment. (Someone once mentioned of a firmware upgrade or a magic command or something to allow you to feed the sawtooth corrections from the receiver to the PRS10's time tagging circuit, but I've yet to find any documentation on that.) -ch _______________________________________________ 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.
