On 05/14/2013 07:57 PM, George Lu wrote: > According to the documentation at > http://www.adafruit.com/datasheets/GlobalTop-FGPMMOPA6H-Datasheet-V0A.pdf: > > High accuracy 1-PPS timing support for Timing Appli > cations (10ns jitter) > > George
Here, have some data. I am testing a few MT3339 modules at the moment; They all seem to have the same firmware. The (live, updates every minute) plots of one are at http://cm.kasperkp.dk/mc1010p.png (phase) http://cm.kasperkp.dk/mc1010a.png (adev of this and others) http://cm.kasperkp.dk/mc1010p.txt (pps phase in seconds) It is far better than others cheap navigation receivers I have tested, but it does peculiar things sometimes, such as the 60ns excursion at 2500 seconds. And I am looking for a navigation receiver at the moment, not a timing one, so this is just because I can. /Kasper Pedersen Note: The receiver is fed off of a splitter from an external antenna. The counter is one of my homebrew ones with ~250ps-ish resolution, and the FEI-5680A in it was turned on 15 mins before starting the run, so it's still settling. _______________________________________________ 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.
