Many thanks Don, The only thing I want to look at (and tweek) is the C Field adjustment. For some reason I can't seem to be able to turn the pot properly through the small hole in the case, so I will have a look to see if anything is mechanically mis-aligned.
I promise I won't tweek anything else! Cheers, Ian. ----- Original Message ----- From: "Don @ True-Cal" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" <[email protected]> Sent: Monday, October 20, 2008 7:57 PM Subject: Re: [time-nuts] Question and help with LPRO-101 Ian, No problem, more discussion - the better. Unscrew the two hex standoffs on either side on the connector, pull the 10-pin feed-through out of the internal connector. Note the position of the grounded pins vs. the capacitive bypass feedthrough pins. This will free up the metal cover to "snap" off of the base plate. A very small screwdriver can be used in the small slots at each of the four coners to pry the box cover free from the base plate. Caution, here is where a little will-power is needed to resist tuning the several adjustments for "better performance". Have fun, Don ----- Original Message ---- From: Ian Sheffield <[EMAIL PROTECTED]> To: Discussion of precise time and frequency measurement <[email protected]> Sent: Monday, October 20, 2008 1:34:01 PM Subject: Re: [time-nuts] Question and help with LPRO-101 Hello Don, Sorry to hijack your question, but how do you get inside an LPRO-101? Does the case just spring off? Thanks, Ian. ----- Original Message ----- From: "Don @ True-Cal" <[EMAIL PROTECTED]> To: <[email protected]> Sent: Monday, October 20, 2008 7:05 PM Subject: [time-nuts] Question and help with LPRO-101 Hello, Can anyone guide me or give me a link to internal settings on the Efratom LPRO-101 Rb oscillator. I have the User's and Integration Guide but I am looking for more detailed information on any optional settings that may be available from the many inside jumpers and/or hidden connectors. Specifically, all of the units I have provide a 10MHz sine wave output and I am wanting a 1PPS output on one of the units. I believe there are LPROs that provide a 1PPS output but not sure if they are a different part number unit with different electronics or just different jumper options inside. I scoped the hidden connector J6 but no 1PPS signal. There is a 9-pair J8 jumper block with 2 jumpers and a 7-pair J8 with one jumper and a 2-pair J1 with no jumper. There is also a connector block J9 and a 3-pair J10 but they are back by the Rb lamp/cavity with analog signals on some probably for initial test/calibration. My units are Cage Code 55761, Part Number 102500-001 Thanks... Don _______________________________________________ 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. -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.173 / Virus Database: 270.8.1/1734 - Release Date: 10/20/2008 07:25 _______________________________________________ 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. -------------------------------------------------------------------------------- No virus found in this incoming message. Checked by AVG - http://www.avg.com Version: 8.0.173 / Virus Database: 270.8.1/1734 - Release Date: 10/20/2008 07:25 _______________________________________________ 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.
