Mass

Hi All, I'm following the QUCS tutorial - part 1 and my QUCS version is 0.0.19. I have a simple RC circuit and try to get the frequency components of this circuit using the command " time2freq "as pointed out on page 29 of the PDF. I don't understand why the simulator is not able to show the harmonics . I would be grateful if you help me. Both the QUCS file and the Tutorial PDF are attached. Thanks