The Red Pitaya uses a Zynq, and there's an (unofficial) SDR application available to experiment with.
Cheers Michael On Thursday, 11 August 2016, Chris Albertson <albertson.ch...@gmail.com> wrote: > Thanks for pointing out the Zynq. Wow you get a dual core ARM and an > FPGA all in one package. It seems overkill for a GPSDO but not the > type you are making as you can transferring the time out of the GPSDO > using PTP. > > The Zyng looks to the the perfect platform for low-cost SDR. > > On Wed, Aug 10, 2016 at 2:30 PM, Joakim Langlet > <joakim.lang...@seaview.se <javascript:;>> wrote: > > Dear time-nuts, > > > > My name is Joakim Langlet (SM0OET) and I just recently joined this list. > As > > Brooks Shera was mentioned, I remembered that I was referenced in the > > footnotes of the original article in the QST - July 1998. It feels almost > > historical now. Brooks bought a few OCXOs from me. > > > > I am currently working on a GPS stabilized OCXO. > > It is based on a Xilinx Zynq FPGA as the processor and counter > arrangement. > > The hardware is starting to take shape. The control voltage of a 20 MHz > OCXO > > is set by a DAC coupling from which I hope to set the voltage in very > small > > steps. > > The OCXO has a CMOS level output which is converted to LVDS and is wired > to > > the FPGA board. The Xilinx Zynq take a minimum frequency of 19 MHz as > input > > to the PLL of the clock tile. My intention is to scale up the clock to > some > > where a bit over 200 MHz to be fed to the counters.The 1 PPS from the GPS > > receiver is also fed into the FPGA to gate the counters. > > > > The reason for my choice of processor is that I want to run Linux on it > in > > order benefit from the large software base. Time distribution using PTPv2 > > and a nice web-application to visualize and control what is going on > inside > > is part of the intended concept. > > > > I still have a long way to the finish line but I will try to present some > > results as I proceed. > > > > I am following what is written on this list with great interest. It feels > > good to know that I am not the only nut .... > > > > BR/ > > Joakim > > _______________________________________________ > > time-nuts mailing list -- time-nuts@febo.com <javascript:;> > > To unsubscribe, go to > > https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > > and follow the instructions there. > > > > -- > > Chris Albertson > Redondo Beach, California > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com <javascript:;> > 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.