Tuesday, May 21, 2013

Oscilloscope 101

In this lab we practiced using the oscilloscope which will help us measure the voltage and time of a signal based on the wave shape. This instrument will help in future labs.

We first had to get a sign wave to appear on our oscilloscope with a frequency of 5 kHz and amplitude of 5 V. We measured the period to be 210 us, peak to peak amplitude of 10 V, zero to peak of 5 V, and RMS value of 3.53

We then verified these values with the DMM and got VDC = 0 and VAC = 3.36

We then included a DC offset
adding a 2.5 V offset we attained the values    VDC = 2.5 V and VAC = 1.17 V

We then displayed a square function

VDC = 0 V and VAC = 2.6 V
we calculate VAC = sqrt(2.5^2 * 4 * 50ms/ 4 * 50 ms) = 2.5 V

Mystery Signal: After establishing a steady wave function we measured DC = .03V frequency = 133k Hz and peak to peak amp to be .13 V


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