Hi Jeff, if you read the manual you will see (there is a partial circuit diagram) that the external voltage trim is added to the voltage on the internal trim-pot, so both adjustments have the same effect. I was thinking of using an 8bit DAC to put a very small correcting voltage on the electrical input while I use the internal pot to adjust it centre scale or if it runs off scale. That way I can get microhertz steps of adjustment from an external circuit without an extreme stability DAC. cheers, Neville Michie
On 26/07/2008, at 8:51 AM, jshank wrote: > Hi, > > I recently acquired a LPRO 101 Rubidium Oscillator. After reading the > manual I see that there are two ways to adjust the frequency 1) > using and > adjusting screw on the unit and 2) using the External C-field > control signal > at pin J1-7. Has anyone experimented with either method and if so > what > method was preferred? > > Jeff > > > _______________________________________________ > 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.
