EEPROM endurance? Tendency for EEPROM to get corrupted when written to just after power-up?
See https://www.febo.com/pipermail/time-nuts/2014-October/087324.html Tim N3QE On Fri, Apr 29, 2016 at 7:11 AM, Bert Kehren via time-nuts < [email protected]> wrote: > Sadly yes > The reason we have not released our GPSDO for the FE5690/50 and FE405 is > that we have experienced the same on all three devices. You are the 9th > case > that I know of. We know very little as to what exactly causes it but we are > incorporating circuitry to prevent it. What we know is that it is not a > particular code sequence on the RS232 port, but what happens the operating > code is turning to mush. Some how the RS port is involved. Serious flaw on > all FE devices since most likely the code was written by the same > individual. > Bert Kehren > > > In a message dated 4/28/2016 9:02:28 P.M. Eastern Daylight Time, > [email protected] writes: > > Just as I started testing the GPS discipline board prototype, my FE-5680A > seems to have developed a very odd problem. > > If I give it power, it outputs a “kinda” 10 MHz sine wave while it sweeps > around looking for a physics lock. This is as expected. > > About the time that I would expect the lock light to turn on, instead the > output just stops. The lock light never comes on. > > This unit’s been working fine for months now. It’s conceivable that I’ve > sent it some sort of serial command it couldn’t digest, but using the > Windows calibrator software seems to work - albeit there not being any > output > from the oscillator at all. > > > _______________________________________________ > 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. > _______________________________________________ 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.
