Hi The sawtooth correction on a good GPS will go down to a few hundred ps over a thirty or so ns range. If you are going to correct, you need a chip that is accurate to <100 ps over a 30 ns (> 300 tap) range. That’s a tough part to find. Next you need to worry about jitter in the delay line ….
Once you do all that, you still have a pretty messy PPS. Bob On Mar 5, 2014, at 9:02 PM, Daniel Mendes <dmend...@gmail.com> wrote: > Em 05/03/2014 22:43, Didier Juges escreveu: >> Tom and Bob, >> It is not obvious to me that it is "easier" to simply apply a correction in >> nS increments with a range as wide as 100nS. How is this done? Using >> switched delay lines or delay gates? > > Using a DS1023 or a DS1124 plus a microcontroller to receive the RS232 > message and program the chip to generate the desired delay: > > http://www.maximintegrated.com/datasheet/index.mvp/id/2608 > > http://www.maximintegrated.com/datasheet/index.mvp/id/5514 > > Daniel > _______________________________________________ > 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.