[Discuss-gnuradio] scaling issue on USRP2

[George Nychis]

Whenever I send samples to the USRP2, I scale them between -1 and 1, such that the absolute value of the greatest real, and imaginary, component is 1:

scale= 1 / max([abs(real(signal)),abs(imag(signal))]);

signal = scale * signal;

I confirm that no real or imaginary components exceeds -1 or 1.

However, when I transmit using my scaled signal, I get some major clipping:

If I do not scale my signal, I get a nice clean waveform:

Has anyone else noticed a problem when scaling on the USRP2?

Thanks,

George