Is there a way to limit the frequency response of the when using the excitation tab?
If I use the signal generator, should the swept sine duration be equal to the FFT block size?
Without a triggering option in the Dual FFT, how is the signal positioned in the acquisition window?
Off topic, how do I delete data captured in a project?
Perhaps, limiting the frequency span of the FFT is what you want?
FFT-based measurements assume periodicity, so it shouldn't matter for frequency domain measurements. If you would like to shift the position of one of the two signals relative to the other, you can add delay to your reference signal.
Each captured measurement has an associated delete button in the project outline of the main project window.