Adrian Pure speculation from a shade tree time-nut: As my tube became weaker the unit became heat sensitive and would stay locked if I keep the room cooler. It also did better on battery power vs the internal supply. I attributed this to signal to noise level changing as the the tube aged. Stanley
----- Original Message ---- From: Adrian <rfn...@arcor.de> To: time-nuts@febo.com Sent: Sat, June 12, 2010 10:03:15 AM 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 -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ 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.