Nyquist Frequency on LimeSDR-USB

I have been going through the documentation so I can figure out what the minimum nyquist frequency is so that I can use it for calibration testing. I have not been able to figure it out, if anyone knows the minimum nyquist frequency for the LimeSDR-USB that would be great. Thank you!

You need to tell us the bandwidth you want to measure. Better still, give us the full scenario of what you are trying to do.