Frequency response above Nyquist

[hasanaydin]

I have a small problem. I am currently testing different sample rate converters and would like to compare them in REW. I would like to see the frequency response above the Nyquist frequency to compare the attenuation for example. How do I do this? The frequency response is cut off at 24khz (48khz sampling rate).

 

[John Mulcahy]

This thread should help.