Hi, My environment is: USRP: X310 with basicRX (currently one but 6 in a near future) UHD: 3.13.1.0-rc1 GNURadio: 3.7.13.4-r2 gr-ettus: master branch, up to date
I need to sample 4 real signal / USRP and to demodulate / decimate before transfer to the PC. I have created a GNURadio flow with: - 2 Radio (id 0 and 1), configured with 2 channels - 2 DDC (id 0 and 1), with 2 channels, with a center frequency fixed to XX MHz - 4 complex To Real; - 1 QT Gui with 4 inputs. Each channel of each radio is connected to an DDC input (radio0 channel 0 to DDC0 input 0, radio0 channel 1 to DDC0 input 1, etc.) With this setup and with an input configured as XX + YY MHz (to have a beatnote) I'm able to see a sinusoid on the qt for all channels (if I plug / unplug an input signal the corresponding plot is equal to 0 or displays the signal). But: 1/ the console panel display continuouly messages about channels overrun 2/ the data flow is not continuous (visible in qt plot) (I suppose is due to 1/ ) 3/ channels are not aligned (I suppose is due to 1/ and/or 2/ Theorically, by reading HDL files for the X310 firmware it's seems possible to use this configuration. Then, how to fix my issue? - Is it a USRP/UHD limitation? - gr-ettus seems not heavily upgraded, is something must be modified in this repository? - I am just wrong somewhere on my design? Thank you very much Gwen _______________________________________________ USRP-users mailing list USRP-users@lists.ettus.com http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com
