Thanks John, That makes sense. I tried feeding the 10 MHz of two HP synthesizers and got useless results. Now I see why. I understand that using the 1 pps output makes more sense. If my counter had the a/d output, I would be very close to having all I need to synchronize the VCXO to GPS...
Didier KO4BB John Ackermann N8UR wrote: > I use time interval to compare frequency offset and stability by feeding > the unknown signal into the start input, and the reference into the stop > input. The actual time interval doesn't matter, but by tracking the > delta in time interval you can determine offset and drift. Typically, > you use 1pps to do this, but there are ways to use higher frequencies, > though they run into problems with cycle slip if the two sources aren't > very close to each other. > > John > ---- > _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts