Lab 12: Oscilloscope 101

Intro:

The purpose of this lab is to get introduced to using an oscilloscope.

Exercise 1: Displaying and Measuring a Sinusoid

Frequency 5kHz

Period 0.2ms

Peak to peak Amplitude 5V

Zero to peak Amplitude 2.5V

Anticipated RMS = 5/√2

VDC -10.3mV

VAC=1.855mV

Exercise 2: Including a DC Offset

+2.5V DC offset

DC coupling

AC coupling

The difference between them is the ground positioning

VDC = 2.48 mV

VAC = 1.91 mV

Exercise 3: Displaying and Measuring a Square Wave with offset.

VDC = 2.49 mV

VAC = 3.08 mV

RMS= 5V/200μs = 25000

Exercise 4: Measuring Mystery signals

DC voltage 4V

Frequency 67.56 Hz

Pk-Pk Amp .4V