Multifunction DAQ

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FFT problems

Hello,
I have finally nearly finished my programm in labview. I just have one more question. I generate the sine signal I send it to Anlog output than through the electronic circuit board to the analog input and than I do the FFt. I use Real FFt.vi and I draw Amplitude spectrum and phase spectrum. My question is is it possible to receive in amplitude spectrum peaks that will have the value of the amplitude of the sine signal before the FFT. Because as far as I remember from the theory the peak value should be the same as the value of the sine before the FFT ( or maybe I am wrong?)
looking forward for some help from Ypu
RQsz

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