On Wed, Apr 01, 2009 at 08:15:47AM +0000, feldmaus wrote: > Hi All, > > i have a signal generator which is only connected to 1 SMA connector > at the LFRX daughterboard. > In the gnuradio documentation is written: > "Each of the 4 ADC's can be routed to either of I or the Q input > of any of the 4 DDC's." > > But if i store the data coming from the usrp to disk, i have got > real and imag values, which represents the I and Q values. > So how is the Q part created ? > Or do i have to create it by connect my signal generator to 2 SMA connectors ? > > My test signal is a sine signal. > > Regards Markus
Markus, these are all great questions, but I have the suspicion that you haven't studied the USRP FAQ. For starters please read and understand: http://gnuradio.org/trac/wiki/UsrpRfxDiagrams http://gnuradio.org/trac/attachment/wiki/UsrpFAQ/USRP_Documentation.pdf Euler's identity CORDIC Thanks! Eric _______________________________________________ Discuss-gnuradio mailing list Discuss-gnuradio@gnu.org http://lists.gnu.org/mailman/listinfo/discuss-gnuradio
