Engineering 103 –UMass Boston

CW 11

(In-Class-Work 11)

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

Starting with the LabVIEW Virtual Instrument (VI) to plot a function in CW9, 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. In each team, students working together at a computer numbered between 1 and 10 will submit LabVIEW LLB file cw11_XX_a.llb, students working at a computer numbered between 11 and 20 will submit LabVIEW LLB file cw11_XX_b.llb, to the files folder in the server. Replace XX by 01 if team 1, etc. These files need to be uploaded to the server today to receive credit. Include your names within the files.

*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.