Thank you, Charles. All OCXOs have been tested in free-running mode after 40-50 min of switch-on/warming.
All OCXOs have been installed in isolated close box to exclude external airflow. Cases of all OCXOs had not any contact with external metallic parts of the box. Karen >Karen wrote: > >>The next OCXOs have been tested today: > >Did you test the oscillators free-running (NOT in your GPSDO)? If >so, those plots look much too high (by at least an order of >magnitude, maybe even 2 or more OOM for some of the oscillators). > >Of course, oscillators take time to settle to their best stability -- >as much as several weeks or even several months for some -- so if you >just turned them on and measured them a few hours later you can >expect higher than normal ADEV results. Even so, these results seem high. > >But if you measured them in your GPSDO circuit, you have not >separated the potential measurement problems from potential GPSDO problems. > >If you suspect the time base in the Pendulum, you can use one of the >OCXOs to feed its external reference input. > >Best regards, > >Charles _______________________________________________ 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.
