Hi If they are looking for a pattern what is the pattern?
Bob On Feb 13, 2012, at 3:35 PM, paul swed <[email protected]> wrote: > The reason to sweep low is to establish a particular lock pattern to look > for. > Check the programmed offset before retuning. Mine was at mid range 0000 > Search the threads for sending commands to the FE5680. > > On Mon, Feb 13, 2012 at 2:56 PM, Bob Camp <[email protected]> wrote: > >> Hi >> >> For what ever reason, most of the FE's sweep down to about 200 to 250 Hz >> low. Few sweep more than 50 Hz high. I have one unit that locks fine and >> only sweeps 5 Hz high. >> >> Yes, I would open it up and re-tune. I think I would only bump it about 50 >> Hz or so. I have no idea *why* they are all tuned low, but there may be a >> reason (like avoiding a false lock). >> >> Bob >> >> -----Original Message----- >> From: [email protected] [mailto:[email protected]] On >> Behalf Of Erno Peres >> Sent: Monday, February 13, 2012 2:17 PM >> To: [email protected] >> Subject: Re: [time-nuts] FE-5680A Question >> >> >> Hi Chris, >> >> thanks for the info. My second problem is that the unit is in locked >> position >> after powering up.... but after about 5-8min the freq goes down slowly >> about 9.999.997.3 Hz and the lock ind level is still low..... >> Also noticed that during the sweep the max freq is 10.000.004 Hz and the >> min freq is 9.999.750 Hz.. >> I assume that I have to open up the unit and try to re tune the 10Mhz >> sweep >> osci...... let say from 9.999.900 to 10.000.100 at least. >> Any suggestion???? >> >> Thanks and regards, >> Ernie. >> >> >> >> >> -----Original Message----- >> From: Chris Albertson <[email protected]> >> To: Discussion of precise time and frequency measurement >> <[email protected]> >> Sent: Mon, Feb 13, 2012 7:32 pm >> Subject: Re: [time-nuts] FE-5680A Question >> >> >>> From the label I can see it requires +5 Volt but no info about the >> S232....... >> Can I adjust the " C " field from the DB9 connector....???? >> On the units that require 5V you can adjust the frequency using rs-232 >> ut only within a very small range around 10MHz. Some of the >> ocumentation applies to other types of this same model oscillator. >> Chris Albertson >> edondo Beach, California >> _______________________________________________ >> ime-nuts mailing list -- [email protected] >> o unsubscribe, go to >> https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> nd 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. >> > _______________________________________________ > 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.
