1. What is FFT? 1-1 FFT Analyzer 1-2 Why is FFT Necessary? 2.Representation of Waveforms (Sine wave and Cosine wave) 2-1 Amplitude, Phase and Frequency 2-2 Locus of Waves 2-3 Time Difference and Phase 2-4 Electrical Angle and Mechanical Angle 2-5 Rpm Order and Harmonics 2-6 Representation of Waveforms (Sum of Waveform (composition)) 2-7 Representation of Waveforms (Product of waveforms)