Hello Ali, To extend what Marcus has said, here is a link to the UHD manual page about sample rates. http://files.ettus.com/manual/page_general.html#general_sampleratenotes
Regards, Derek On Mon, May 14, 2018 at 8:54 AM, Müller, Marcus (CEL) <[email protected]> wrote: > Hi Ali, > > just like the console will tell you, 25 kS/s is simply impossible with > an X310; instead, the minimum possible rate was used. > > You should probably just configure your X310 to get you e.g. 500 kS/s, > and then resample in digital domain. If you're hesitant to design your > own decimating filter, use the "rational resampler" block and configure > it to decimate by (500/25)=20. > > Best regards, > Marcus > > On Mon, 2018-05-14 at 10:18 +0300, Ali wrote: > > Hi to all, > > > > I am using GNURadio to control an X310. I want to get IQ samples for > only 25 kHz bandwidth. > > > > When I wrote 25 kHz to the bandwidth line in UHD-Source block in > GNURadio, I still see the signals at 50 kHz or 75 kHz away from the center. > My sampling rate is 195312 Hz. When checked in MATLAB, the signals are > there. It looks like I cannot control the bandwidth with GNURadio. > > > > I suspected that there is not any DDC filter for this bandwidth. If it > is so, what is the minimum bandwidth for USRPs? Are the bandwidths that I > can use discrete? I am confused. > > > > Thanks in advance, > > Ali > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > [email protected] > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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