[USRP-users] Standalone signal generator on B205mini

Justo Ramos, Diego djusto at indra.es
Tue Mar 26 13:07:43 EDT 2019

Hello all,

I have an B205mini board and I'm interested in modifying the internal TX block of the FPGA, to be an standalone signal generator.

I created a custom block that generates a signal, in this case a pulse generator, with the two components of 12 bits for I and Q. Then I connect these two components into  b205_io's tx_i0 y rx_i0. I use the radio_clk as clock to generate samples of the signal.

Finally I remake the binary files of the FPGA and I reprogram the B205mini, but when I use the Spectrum Analyzer I don't have any signal  on the TX frequency.

I don't know if I have to change the clock for generation of samples or activate another signal. Could someone give me an advice to achieve custom transmission from the FPGA?

Thanks you.

Best regards,


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