Forum: GNU Radio Benchmark Duplex

Hi

When I try to establish the duplex comunication between two USRPs, I 
found
that if I put the code A infront of code B, only the transmitter works, 
but
if I put code B infront of code A, only receiver works.
Could anyone tells me the reason?
Thanks a lot!


code A:
        self.source = uhd_receiver(options.args, symbol_rate,
                                   options.samples_per_symbol,
                                   options.rx_freq, options.rx_gain,
                                   options.spec, options.antenna,
                                   options.verbose)


code B:
        self.sink = uhd_transmitter(options.args, symbol_rate,
                                    options.samples_per_symbol,
                                    options.tx_freq, options.tx_gain,
                                    options.spec, options.antenna,
                                    options.verbose)

Best regards!

Dong Wang