Engineering 103 –UMass Boston

CW 12

(In-Class-Work 12)

Plotting two sinusoids with arbitrary frequencies, their sum, and spectrum.

Starting with the LabVIEW Virtual Instrument (VI) to plot a function in CW8, create a modified VI that allows the user to change the frequency of the sinusoids within the Front Panel. Use one Waveform Graph for the two sinusoids, another for their sum, and a third one for their Spectrum. Use “FFT.vi” to compute the spectrum of the combined signal, then takes the absolute value to plot.

Please insert names and dates within the Front Panels. By alphabetical order of the last names, the first two students in each team will submit LabVIEW LLB file cw12_XX_a.llb, the next two students will submit LabVIEW LLB file cw12_XX_b.llb, to the files folder in the server. Each LLB file should contain two VI’s corresponding to this CW. These files need to be uploaded to the server today to receive credit.

*Remember that this is an individual work (turn it in, as instructed, with your name and date). Home-works and class-works count 20% toward the course grade. Class-works are done in class.