We are trying to export as a txt file, a waveform obtained using NI-Scope-SFP-PCI-5911. The reason we want to export the file, is because the FFT function is calculating an FFT which is clearly wrong: the waveform has a fundamental frequency of over 30 kHz, while the FFT says the fundamental is about 1.4 kHz.
What is the mechanism for exporting a waveform as a txt file?