Use one of your 'locked' Rb as the 'standard' and then look at the 10 MHz from the 'problem child'. See if you can adjust C217 (I think. Look at the archive.) to bring the 10 MHz signal close to the 'standard'.
Perhaps the oscillator is just out of 'range' and can be brought back into range where the loop can lock it. Or maybe that is what you have already done. Both of my units get quite 'toasty'. Joe -----Original Message----- From: [email protected] [mailto:[email protected]] On Behalf Of Scott Newell Sent: Tuesday, January 17, 2012 10:31 PM To: [email protected] Subject: [time-nuts] FE-5680A won't lock Just got my 3 in from nichegeek. Paid Thursday, shipped Friday, arrived this evening. Wow. (Actually arrived too quickly--I don't have my t-bolt running, so I can't easily do an accurate frequency check.) Two power up and lock in <3 minutes. One powers up, gets toasty, and gives 10MHz, but no lock and no PPS. The tuning config on all three read back as 0. I've set the problem child to near +/- FS and about +/- 25% of tuning range: still no lock. Any suggestions on what I should look for or try? I'm not quite ready to throw in the towel and contact the seller. -- newell N5TNL _______________________________________________ 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.
