Yes, I don't think a broken oven controller is going to pull the frequency off by 890 kHz. :-)
-- john, KE5FX > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] > Behalf Of Tim Shoppa > Sent: Sunday, January 13, 2008 12:13 PM > To: time-nuts@febo.com > Subject: Re: [time-nuts] HP10811 problem - wrong frequency > > > Jim Miller schrieb: > >> i have a problem with my HP10811 ocxo. I connected it properly > to 24V, 12V > >> and to my counter to measure its frequency. The measured > frequency is 10.887 > >> MHz, but it should be 10MHz (also noted on the 10811). A 5MHz tcxo is > >> measured correctly, so i think the counter is okay. Can anyone > help me ? > > > > There is a thermal fuse on the oven control board which sometimes > > blows due to age, or it vibrates out, or otherwise fails. This causes > > the oven to not operate and the unit is guaranteed to be off frequency > > by a large amount. > > Wow, it's interesting to see what "large amount" means to different > folks. > > To some, it's a few parts per billion. > > To others, it's nearly 10% (umm, ninety million parts per billion). > > Tim. > > _______________________________________________ > 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.