TDRExplanationWidget 0 0 364 412 Form <html><head/><body>TDR (IDFT)This operation performs an inverse DFT on the frequency data, resulting in time domain data.Two modes are available:<ul style="margin-top: 0px; margin-bottom: 0px; margin-left: 0px; margin-right: 0px; -qt-list-indent: 1;"><li style=" margin-top:12px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Bandpass: The center frequency is used as the DC bin for the IDFT. In this mode, any span can be used as the input, but in the time domain no step response is available.</li><li style=" margin-top:0px; margin-bottom:0px; margin-left:0px; margin-right:0px; -qt-block-indent:0; text-indent:0px;">Lowpass: The start frequency is used as the DC bin. If a step response should also be calculated, the start frequency should be as low as possible.</li></ul> </body></html> true Qt::Vertical 20 40