Hi Brendan, I would contact Brooks Shera directly before you go any further as the span of his controller is set at 4.5e-8 and the maximum span on an LPRO is about 5e-9. He can reprogram the controller by changing the filter gain and loop time so it is about 8X more sensitive so it will work with a direct connection to the LPRO. I have a controller modified with the filter gain is scaled up 1 step and the loop time set to 120 seconds and this works well with an LPRO attached directly to the DAC. Enjoy! Richard
----- Original Message ----- From: "Brendan Minish" <[EMAIL PROTECTED]> To: "Discussion of precise time and frequency measurement" <time-nuts@febo.com> Sent: Wednesday, December 13, 2006 9:13 AM Subject: [time-nuts] LPRO-101 with Brooks Shera's GPS locking circuit > Hi I am looking for info on using the Brooks Shera GPS-VCXO Controller > with an EFRATOM LPRO-101? > > I currently have it locking an old and unknown single oven Xtal > oscillator this is working as well but I hope to replace this with the > LPRO-101 > > Has anyone any suggestions as to how best to choose the correct values > of R5 and R6 for use with the LPRO-101 C field control input. > > > 73 > Brendan EI6IZ > > > > > _______________________________________________ > time-nuts mailing list > time-nuts@febo.com > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts _______________________________________________ time-nuts mailing list time-nuts@febo.com https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts