What kind of capacitor is used for the 10 µF cap - electrolytic or film? Bill Hawkins
-----Original Message----- From: Nick Sayer via time-nuts Sent: Monday, September 26, 2016 11:18 PM With a short TC loop filter, the PLL does lock up, but obviously the jitter of the Venus 10 MHz output comes through. With a longer TC, the PLL never locks - or at least if it does lock, its locking significantly off frequency. Thats with a 10 µF cap and varied resistors between 10k and 1M. The best I got was at 200k - a TC of 2s. That resulted in this video. Unlike other videos Ive made comparing two GPSDOs, this one is not a time-lapse. The reference is an OH300 based GPSDO. https://www.youtube.com/watch?v=hiHRp0dCJ64 <https://www.youtube.com/watch?v=hiHRp0dCJ64> A time constant of 10s (1M resistor) just doesnt work at all. _______________________________________________ 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.
