[Discuss-gnuradio] Re: Re: USRP2 and external clock (from GPS receiver)
Matt Ettus wrote: Are you sure you have a 10 MHz reference and not some other frequency? Matt Yes. I also have tested with a function generator. Changkyu Seol -- Posted via http://www.ruby-forum.com/. ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Re: Re: USRP2 and external clock (from GPS receiver)
Changkyu Seol wrote: Matt Ettus wrote: Are you sure you have a 10 MHz reference and not some other frequency? Matt Yes. I also have tested with a function generator. Changkyu Seol If you had a real email address, I would send you some code to try. Matt ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
Re: [Discuss-gnuradio] Re: Re: USRP2 and external clock (from GPS receiver)
I've tested this here in my lab, using a signal generator for the SMA reference input. With firmware modified to automatically set the clock source to the external reference, and to generate a test 10 MHz output waveform, I get a good lock when the external reference is anywhere between -13dBm and 10 dBm (142mV p-p to 2V p-p). This is using revision 10467 for both the FPGA and the firmware. Johnathan Corgan Corgan Enterprises LLC ___ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
