Joe,
Complex sampling does not require the sample rate to be 2x the highest
frequency as is the case for real sampling. It only needs to be 1x.  So,
the 250MS/s sampling rate produces 250MHz of spectrum. But, there are
anti-aliasing filters that reduce this to a usable bandwidth of 200Mhz.
Rob

On Wed, Mar 1, 2023 at 12:52 PM <jmalo...@umass.edu> wrote:

> Hello,
>
>
> I am currently looking to see what the highest possible sampling rate is
> for the ettus N321/N320. I see that the highest master clock rate is 250e6
> Mhz, However, on the product website(
> https://www.ettus.com/all-products/usrp-n321/), it says that it can
> collect up to an instantaneous bandwidth of 200 Mhz, so I am led to assume
> that the maximum possible sampling rate is 400 Mhz. Is this true? If so,
> how do I configure my the ettus to collect at a rate of 400 Mhz without the
> rate being coerced back down to 250 Mhz.
>
>
> Thanks,
>
> Joe
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