I have an application that performs FFT analysis on an AC voltage singnal. As part of the whole setup, I've also included the Cycle average and RMS vi. When I've run the whole program, I've found out that the RMS value indicated is less than the highest magnitude component from the FFT analysis!(Which is incorrect). In addition I've found that the sub-vi, ma_ptmFetch.vi, within the cycle average and RMS VI, is returning an error(-20312), which says input waveform size is zero.
Can anyone help, with this problem?
