The LFRX has 2 inputs. For your application you only need to use one of them, since you have a real IF and not complex IQ baseband. The signal will then be downconverted from 10 MHz by the DDCs, and you will have a complex baseband signal.
The LFRX has a clock output pin. You will need to explicitly turn that pin on and set the divider to 10 in order to get a 10 MHz reference output for your system. Matt On Fri, Aug 9, 2013 at 5:25 PM, Nemanja Savic <[email protected]> wrote: > Hi all guys, > > I have designed a small board based on Ti's CC1000 transciever, which I > want to use as my RF front end. The board provides 10.7 MHz IF signal at > one of the pins. After connecting everything I come to the point where I > don't understand what's going on after LFTX. > In the "documentation" about LFTX on ettus website it is written that it > can be used for one complex baseband rx channel or two real valued rx > chains. I which way i can get only real valued signal from RX-A (taking > only the real part from the signal coming from usrp source?) > I suppose that signal is downconverted to baseband using DDCs. Do they > make quadrature signal from the input and make complex baseband at the end? > > Is there any stable clk signal at the board with frequency between 10 MHz > and 14 MHz that I can use as clock reference for my board? > > Cheers, > > -- > Nemanja Savić > > _______________________________________________ > Discuss-gnuradio mailing list > [email protected] > https://lists.gnu.org/mailman/listinfo/discuss-gnuradio > >
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