If I choose to control the frequency via External C-field control I guess it would take a very precise and stable voltage source. Any thoughts or suggestions?
----- Original Message ----- From: "Scott Mace" <[EMAIL PROTECTED]> To: "jshank" <[EMAIL PROTECTED]>; "Discussion of precise time and frequency measurement" <[email protected]> Sent: Friday, July 25, 2008 7:15 PM Subject: Re: [time-nuts] LPRO 101 ADJUSTMENT > Both methods work well. Be sure the unit is mounted to some sort of > heatsink,chassis, etc. > I'm using a Fury GPS receiver to drive the EFC on an LPRO-101. > You won't get much range out of either adjustment. Leave it powered > on for a couple of hours before trying to adjust it. I usually set the > trim pot in the > middle of it's range and use the EFC pin. I think it's a 28 or 30 turn > pot. EFC > is 0-5v. The unit will self-bias to around 2.5v if the EFC pin is open. > > Scott > > 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.
