My Z3801A failed about a year ago (there was a warning the electronic frequency control was nearing a limit).
Symptoms (most from GPS Control and Lady Heather: Frequency about 1E-8 low Time Invalid (many hours off) Date 6 months old DAC 99.9969 percent Life 72K Hours Lady Heather shows the following as OK: ROM, RAM, OSC GPS, Power, EEPROM, Antenna, Discipline, 5 satellites GPS Con shows the following: EFC: ERR No time display Outputs Invalid Only the front panel power light is lit. This suggests either the crystal has aged or the heater temperature has drifted slightly. I hear/read that opening the oscillator is difficult. Is there a usable adjustment? What have others done to restore operation? Is it time to consider a different time & frequency standard? Thanks, Joe, W7LUX _______________________________________________ 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.
