Basic RX receive complex

I wrote in before about having problems receiving complex data on the
Basic RX d’baord. I was under the impression that the RX worked like
the TX where all I had to do was tell it to transmit complex data and it
sent the I data thru the TX_A SMA and the Q data thru the TX_B SMA. The
RX does not seem to work like this, however. After testing, I’ve found
that using the usrp.source_c (in usrp_rx_cfile.py example) command tells
the USRP to take in data from only 1 of the SMA’s and interprets this
data as complex. What I want is for RX_A to receive the I data and RX_B
to receive the Q data at the same time and then I can combine them in
software to make complex data. If anyone has any insight in how to
receive in this way, I would be very appreciative.

Thank you
Nick