Problem receiving RX-A and RX-B simultaneously

GNU Radio
1

Hello,

I programmed successfully a simple module to add into the USRP2 FPGA
code. I
control its behaviour with several registers that I can set with an
small
graphical interface I wrote in python. This module receives two
independent
signals through the RX-A and RX-B connectors of LFRX daughterboad. I
used to
check the output signal using an oscilloscope connected to TX-A and TX-B
connector of LFTX because I bypassed the DSP CORE and all was right.

Now, I tried to check the output on the PC side using tools like
*fft_sink_c

  • or scope_sink_c but I can only receive the signal from RX-B. Does
    anybody know why or how to solve this?

I am using Ubuntu 10.10 and GNU Radio driver.

Thanks.

Eduardo.