MIE 402: DATA ACQUISITION AND SIGNAL PROCESSING LAB II
Spring 2022
Objectives
Explore FFT analysis
Background
Lectures on spectral analysis and filtering
Equipment
National Instrument data acquisition (I/O) board
LabVIEW data acquisition/analysis software
MATLAB software
Save (right click mouse on plot, then Export to Excel) to your drive the measured signal in each step (including a screen capture). In your assignment, you will discuss the effect of sampling frequency and number of sampled points on the spectrum of the acquired signal in terms of observed frequency, signal amplitude, mean, and RMS. Your observations should be entered in the notebook.
FFT. In this task, you will analyze the spectral content of a simple signal using FFT analysis Connect the connectors on the computer interface box as shown in the diagram.
Open the Lab_2_FFT App. Set you signal parameters to match the function shown below:
Sample the signal using the six data acquisition parameters settings below: