Comma Separated Values can be saved on a USB memory stick by going to the Storage menu and selecting CSV. If you are unable to save the file and see a “Function Limited!” error displayed check that the scope has been triggered.
For example, if the scope trigger mode is set to Normal and the Run/Stop keypad button is green the scope has not triggered and you will see Wait flashing on the upper left of the display. In this condition CSV data cannot be saved and you will see the error.