A sample rate of 32e3 is very low. I suggest trying with a minimum sample rate of 100e6/128 (always divide the N210's master clock rate by an even number to use as a sample rate) which is 781250.
Mike -- Mike Jameson M0MIK BSc MIET Ettus Research Technical Support Email: supp...@ettus.com Web: http://ettus.com On Thu, May 15, 2014 at 1:55 PM, xianda <wangxianda920...@163.com> wrote: > Hi Mike > Thank you for your reply. > Now I change the addr but a new error comes: > thread[thread-per-block[1]: <block gr uhd usrp sink (13)>]: LookupError: > KeyError: Cannot find an item size: > > thread[thread-per-block[2]: <block gr uhd usrp source (12)>]: LookupError: > KeyError: Cannot find an item size: > > Can you help me?Thank you. > > Best regrads > > > At 2014-05-15 20:48:44,"Mike Jameson" <mike.jame...@ettus.com> wrote: > > Your device hint in the 'Device Addr' section of the 'UHD Source' block > should be "addr=192.168.10.2" and in a separate 'UHD source' block the > "Device Addr" should be "addr=192.168.10.3" > > Mike > > -- > Mike Jameson M0MIK BSc MIET > Ettus Research Technical Support > Email: supp...@ettus.com > Web: http://ettus.com > > > On Thu, May 15, 2014 at 1:39 PM, xianda <wangxianda920...@163.com> wrote: > >> Hello all: >> Environment: 2 usrp N210,mimo cable(they connect with each >> other and share the Ethernet) >> >> And i use the gnuradio companion to set up a very simple >> example.And the example is attached on the email.And I run this simple >> example,an error comes: >> RuntimeError: ValueError: Could not resolve device hint "" >> to a single device. >> >> And ping 192.168.10.2 and ping 192.168.10.3,it's all ok. >> Can someone help me to solve it?Thank you very much. >> Best regards >> >> >> >> _______________________________________________ >> Discuss-gnuradio mailing list >> Discuss-gnuradio@gnu.org >> https://lists.gnu.org/mailman/listinfo/discuss-gnuradio >> >> > > > > _______________________________________________ > Discuss-gnuradio mailing list > Discuss-gnuradio@gnu.org > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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