> What I use on the reflock II is a time lag counter from the 1pps to > next clock, and this value drive a dac. Only a small integration time > is done digitally and the large integration time if one requires that > is done with a classical R and C without any active components right > before the Vtune of the VCXO.
The problem with reflock II as I recall for use with a 1PPS (w/sawtooth) from a GPS receiver, is that the time constant is way too small. You can't integrate to a point anywhere near the Allan intercept of the receiver and the XO. -ch _______________________________________________ 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.
