Hello Kunal, What daughterboard do you have? I do not believe that there is an IQ balance function on the N210. Those functions apply to the E31x, B2xx, and possibly N310 USRPs. There should be a DC notch filter which is selected on and off, but I would have to check to see if that applies to the N210.
What difference in the spectrum are you expecting? What signals are you observing while doing these tests? Regards, Derek On Tue, May 22, 2018 at 4:06 PM, kunal sankhe via USRP-users < usrp-users@lists.ettus.com> wrote: > Hi, > > I want to disable automatic calibration of DC offset and IQ imbalance in > USRP Source block. > > I am aware that I need to pass bool value 'false' as the argument to > *set_auto_dc_offset* and *set_auto_iq_balance*. The USRP Source block > itself provide this facility in the tab *FE Corrections*. However, it > does not seem to work. By providing 0 (boolean false) value in Enable DC > Offset Correction and Enable IQ Imbalance Correction do not disable the > automation DC offset and IQ Imbalance correction. I tested this with USRP > N210 by simply using USRP Source block centered at frequency 915MHz > connected with WX GUI FFT Sink. The spectrum plot does not show any changes > in both cases. > > If I want to force these changes in the UHD code (usrp_source_impl.cc and > usrp_source_impl.h), what changes do I need to make? > > > Thanks, > Kunal > > > > > > _______________________________________________ > USRP-users mailing list > USRP-users@lists.ettus.com > http://lists.ettus.com/mailman/listinfo/usrp-users_lists.ettus.com > >
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