Ecet Lab 1 Instructions

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  • Topic: Square wave, Waveform, Oscilloscope
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  • Published : May 15, 2013
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Laboratory Procedures
DeVry University
College of Engineering and Information Sciences

I. OBJECTIVES
1. Use a function generator to produce different periodic waveforms. 2. Use an oscilloscope to observe periodic waveforms.
3. Use the oscilloscope to measure the waveform properties, including: a. Frequency, f and Time period, T
b. Amplitude or Peak Value, VP , and Peak to Peak Value, VPP c. RMS Value, VRMS
4. Repeat the measurements using MultiSim

II.PARTS LIST
Function generator
Dual channel oscilloscope
BNC to BNC cable (50 Ω)
BNC cable with split ends on one side, or banana plugs
DMM (digital multimeter)
IBM PC or compatible with MultiSim software

III.PROCEDURE
A. Observing Waveforms on the Oscilloscope

1. Connect the function generator output to Channel 1 of the oscilloscope with a BNC-BNC cable as shown in Figure 1 below and turn on both instruments.

Figure 1: Function Generator to Oscilloscope Connection

2. Select the Sine wave button of the function generator. Set the frequency to 1 kHz.

3. Select the Amplitude button on the function generator to set the output voltage. Adjust the voltage to 2 V peak to peak.

4. On the oscilloscope, set the Volts/Div knob to 500 mV/Div. Adjust the time base control to 500 µs/Div.

5. On the oscilloscope, select the AC coupling, select the EDGE button in the trigger area, and select positive. Make sure that Source 1 is selected.

6. The output waveform as seen on the oscilloscope is shown in Figure 2 below:

Figure 2: Sine Waves Displayed on Oscilloscope Screen

7. Using the oscilloscope, including the cursors and built-in functions, and the DMM (where indicated), record the required measurement into Table 1.

Frequency(kHz)| Peak Value(VP, in V)| Peak to Peak Voltage, VPP| RMS Value, VRMS| Voltage as per DMM| Time period (msec)| | | | | | |...
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