Yes, the N210 take daughterboards, and in fact, they only take one RX and one TX daughterboard, or a single "full-sized duplex board". Point is that with the Basic* and LF* boards, you can either use the I & Q signal lines combinedly as a single complex stream, or isolatedly as two real streams. However, as the latter totally "breaks standard behaviour", you have to specify a subdevice specification explaining how you want your channels to be mapped.
Best regards, Macus On 03/18/2016 06:06 PM, Nikos Balkanas wrote: > I stand corrected. Didn't even know that N210s took daugterboards :( > > Nikos > > On Fri, Mar 18, 2016 at 6:39 PM, Martin Braun <[email protected] > <mailto:[email protected]>> wrote: > > You *can* have 2 rx channels in an N210 (by means of dual DDC chains), > but you probably haven't set the subdev spec appropriately (Something > like 'A:0 A:0', depending on your daughterboard, check the UHD > manual). > > Cheers, > Martin > > On 03/18/2016 08:53 AM, Nikos Balkanas wrote: > > Hi, > > > > You can have only 1 RX and 1 TX channel in a N210. You are > asking for 2 > > RX channels in your flow. Runtime complains that he can access > only 1 > > channel (Rx0). > > > > HTH, > > Nikos > > > > On Fri, Mar 18, 2016 at 5:39 PM, SUGANYA M > <[email protected] <mailto:[email protected]> > > <mailto:[email protected] <mailto:[email protected]>>> > wrote: > > > > Hi All, > > I am using GNU Radio Companion 3.7.5 and USRP N210. > > When I implemented a simple flow graph of SIMO system with two > > channels using USRP source block ( attached grc flow graph > snapshot > > for reference), > > I am getting following error: > > > > Traceback (most recent call last): > > File "/home/student/SUGAN/ONE_TWO.py", line 130, in <module> > > tb = ONE_TWO() > > File "/home/student/SUGAN/ONE_TWO.py", line 72, in __init__ > > channels=range(2), > > File > > > "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/__init__.py", > > line 122, in constructor_interceptor > > return old_constructor(*args) > > File > > > "/usr/local/lib/python2.7/dist-packages/gnuradio/uhd/uhd_swig.py", > > line 1740, in make > > return _uhd_swig.usrp_source_make(*args) > > RuntimeError: LookupError: IndexError: multi_usrp: RX > channel 1 out > > of range for configured RX frontends > > > > Can anyone help me to fix this error? > > Thanks in advance > > > > Regards, > > Suganya.M > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > [email protected] <mailto:[email protected]> > <mailto:[email protected] <mailto:[email protected]>> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > > > > > > _______________________________________________ > > Discuss-gnuradio mailing list > > [email protected] <mailto:[email protected]> > > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > > > > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] <mailto:[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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