[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,
Diego

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