Sounds like the OCXO has a jumping problem, going too far out of range for the CS loop to correct. Have you watched it for a long period of time with the loop turned off?
-- john, KE5FX > -----Original Message----- > From: [email protected] [mailto:[email protected]]on > Behalf Of Adrian > Sent: Saturday, June 12, 2010 8:03 AM > To: [email protected] > Subject: [time-nuts] Odd FTS 4060 Behavior > > > I have a FTS 4060 Caesium Frequency Standard that I never managed to get > working properly. > When powered on, it locks properly after some 10 minutes and keeps > running until it jumps off by about +1E-7. That is, the 10 MHz output > then reads 10,000,001 Hz, and the red alarm light is on. > When I tried it yesterday again, it worked for about 2 hours before the > shift appeared. Oddly enough, the green 'Locked' light was still on. > This happens every 2...20 hours. > > Any ideas what could cause that failure? > > Adrian > > _______________________________________________ > 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. > _______________________________________________ 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.
