Hi Ok, those plots look much more "real". Thanks for sharing.
Bob -----Original Message----- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Fabio Eboli Sent: Thursday, December 13, 2012 7:58 AM To: time-nuts@febo.com Subject: Re: [time-nuts] MT3339 PA6H and Racal Dana GPIB, update Bob, timenutters here are the first results, hope I'm not boring the members with these posts, for most participants these are basic things. Now I'm trying to understand if the setup is working or I have to modify some things. The logging is at 47000 samples and going, the script is working well now, and I dont have glitches so far. Raw data, time interval between the pulses: http://www.flickr.com/photos/14336723@N08/8269800802/ Positive thing is that the drift seem consistent with the previous decimated pulse period data. Data corrected for linear drift and offset, the actual values are in the graph: http://www.flickr.com/photos/14336723@N08/8269800868/ Here I dont' like very much what I see, but surely I'm not knowledgeable enough to judge the data :) Some notes for who didnt read previous posts: Racal 1992 counter, start on pps from FE5680 #1 stop on gps pps from PA6H GPS module, Counter External standard is 10MHz from FE5680 #2. The Fe5680 #2 was powered one hour before the session start, and it's mounted near the FE5680 #1, so there is some thermal stabilization in the first hours. Also I dont have any signal amplification and squaring, the trigger on the counter is set at half the pulse peak voltage, both rising edges. Is the graph what I should expect from the gps signal, or I'm seeing some problems in the setup? Thanks, Fabio. Bob Camp <li...@rtty.us> ha scritto: > Hi > > That approach works well. If you have them about a half second apart > I'd stick with that setup. > > Bob > ---------------------------------------------------------------- This message was sent using IMP, the Internet Messaging Program. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
