); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Hi Pete,
Please send me details off list, and please take no notice of "know it alls" who berate anything that doesn't meet their level of electronic understanding! Actually I find negative comments and put downs like that somewhat nauseating in a group that supports all levels of interest from newbies to 40 year professionals. Have fun! Cheers Rob Kimberley -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Pete Sent: 28 September 2007 00:38 To: Discussion of precise time and frequency measurement Subject: Re: [time-nuts] Setting Rubidium to match GPS source ); SAEximRunCond expanded to false Errors-To: [EMAIL PROTECTED] RETRY Chris, The 3575A does NOT have adequate phase resolution to set an Rb source to match a GPSDO. A few, now rather old, phase meters were sold for this purpose, but they used a strip chart recorder to average phase shift over 1 to 24 hour measurement times & required great investments of time to use. I proposed a 1KHz heterodyne scheme for this very purpose on this list a few months ago. The scheme took a few hits for lack of state- of-the-art performance, but I'm still using it without suffering any disappointments. It does require you to have a few items of test equipment (readily available on eBay) which not everyone has & it requires some circuit construction using readily available parts. Except you must wind a couple of 5mH inductors on your own. Contact me off-list if you want more details. Regards, Pete Rawson _______________________________________________ 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.
