Hello! i am new at using labview and pxi cards. i am trying to sample a signal from an analog gennerator with pxi-5122 so afterwards i can process the samples and extract the processed samples to an oscilloscope through pxi-5421. i tried to use the labview examples for pxi-5122 for sampling and processing( more precisely the example "digital filtering"). They are working perfectly for high sample rates (some MHzs), but when i try to sample low frequency signals (for example 20kHz) and use sample rate according to Nyquist criterion, the acquired samples dont reconstruct the initial signal at all. if you have experienced similar problems, how can i sample low frequency signals with sample rates according to Nyquist criterion?
