Can you elaborate on the sample rate of the A/D using 40 MHz patches vs 160 MHz patches? Are the patches fixed across the whole spectrum for a given scan (i.e. using 40 MHz patches requires about 500 patches to cover 100 kHz to 20 GHz, whereas using 160 MHz patches requires 1/4 as many or 125)? Also, is the FFT processing for a scan still performed in the host computer or is it performed in the FPGA instead? If performed in the host, it would seem that the USB3 speed is the limiting factor on scan speed for small RBW (ie 1 kHz).
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