[Discuss-gnuradio] Problem receiving RX-A and RX-B simultaneously

[Eduardo Lloret Fuentes]

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.