Paul, you may be surprised to hear that I had read your article before and yes, everything evolving from The Weinheim Tagung has usually a high s/n level as has your article! After I had read about the XILINX dcms about a year or so I had made me the same plan as you but never realized it.
However, at that time I was in search for a TIC that would reach ns resolution or a bit below for use in a GPSDO to measure time differences with enough resolution so that the sawtooth error correction value of a modern GPS receiver makes really sense to apply. In this case I am interested in how far one can go with a modern fpga. I have alrady made me an delay line interpolator with a ALTERA chip using the very fast logic interconnections that the chip features for carry transport of adders. This one reached a resolution of 110 ps but the chip itself had many limitations. BTW: The way that I plan to use the dcms the jitter will be my friend and not my enemy because I hope that I can make use of it as kind of "dither". Your explanation of how the 5370 works is perfect and I wish I had read it some years before I managed to understnd the working principle by means of an old HP journal article written by Chu. 73 and my best regards Ulrich, DF6JB > -----Ursprüngliche Nachricht----- > Von: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] Im Auftrag von Paul Boven > Gesendet: Samstag, 1. Dezember 2007 22:55 > An: Discussion of precise time and frequency measurement > Betreff: Re: [time-nuts] Of rubidium life and piggy-bank anemia.... > > > Hi Ulrich, > > You might find the approach I used a few years a go > interesting, please > see attached paper. I hope you find the last pages > interesting. By the way, don't forget that DCM's cause jitter > themselves. > > Yours sincerely, Paul Boven. > > > _______________________________________________ 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.
