Equivalent input noise vs frequency

[kai__]

Hi guys, I have a PCIe-6363, I want to draw a plot of equivalent input noise vs frequency, but I don't know how to do.
Now I collect the signal and display it in labview(pic1). If I want to draw a chart like pic2, what should I do?

 

[John Mulcahy]

The RTA has a Y axis option for volts per √Hz.