[Discuss-gnuradio] question about RFX2400

[Malihe Ahmadi]

Hi,

I am testing a transceiver link in ISM band using two USRP2+RFX2400, one 
configured as TX and the other one as RX. I would like to test my own 
FPGA program, so for now I have your FPGA codes in which I only changed 
the signal driving the DAC in TX to be an square wave (+8191 or -8192) 
with frequency about 400Hz. At the RX side, I am looking (using an 
oscilloscope) at the input to the ADC and what I see is quite like my 
square wave modulated with a carrier of couple of MHz. I looked at the 
schematic of RFX2400 and I didn't find any PLL or clock recovery 
circuitry! so I wonder how the frequency offset at RX could be avoided?

Regards,
Malihe