Experiment 8.docx

# Experiment 8.docx - Experiment 8 Frequency Modulation Date...

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Experiment 8: Frequency Modulation Date Conducted : _________________ Date Submitted : _________________ Group Member : (1) ______________ (2) ______________ (3) _______________ (4) ______________ (5) ______________ (6) ________________ Objective: The activity aims to generate FM signals using TIMS modeling equipment Intended Learning Outcomes: The student shall be able to: 1. generate an FM signal 2. understand the modulator sensitivity and linear range of operation 3. examine the factors affecting the shape of the spectrum and bandwidth of FM Results Needed: 1.With the variable DC on its minimum value, set the GAIN control (sensitivity) of the VCO to about 60% (make sure that you do not overload the VCO, the LED should not light up). Redo step 5 and tabulate the result also. V IN OUTPUT FREQUENCY 25% 60% -2.0 V -1.5 V -1.0 V -0.5 V 0 V +0.5 V +1.0 V +1.5 V +2.0 V 1. Plot the output frequency versus the input voltage for each setting

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Analysis of the Result: a. Which of the above settings results in a more linear performance in the given range of V in ? ______________________________________________________________________________ ______________________________________________________________________________ ______________________________________________________________________________ _____________________________________________________________________________ b. Determine the linear range for the second case?

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