On Thu, May 26, 2005 at 01:36:28PM -0400, Krzysztof Kamieniecki wrote: > Quoting Achilleas Anastasopoulos <[EMAIL PROTECTED]>: > > I have a question/observation on this issue: > > > > Since the DDC multiplication is complex and since the internal DDC > > oscilator is noncoherent, I do not see a difference between the MUX > > settings: 0x33221100 and 0xf3f2f1f0. > > > Is the difference between them a phase shift of 45 degrees and a gain ratio of > sqrt(2)?
That's what I would expect. > > Similarly, with the setting 0x00003210 you will never be able to > > separate the two channels coming from ADC0/ADC1 and ADC2/ADC3. > > > You can seperate ADC0/ADC1 and ADC2/ADC3 if you set the DDC frequency to zero > (I > think you also have to never have set it to a non-zero value after powerup, > since you can't reset the DDC phase) I think I'm missing the question. Set nchannels to 2 and the output of the two DDCs will be interleaved. You deinterleave to separate them. See gnuradio-examples/python/usrp/wfm_rcv_many.py for an example that separates the output from more than one DDC. Eric _______________________________________________ Discuss-gnuradio mailing list [email protected] http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
