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Information for a prelab exercise in an electrical and computer engineering (ece) course, specifically ece225l. Students are required to analyze two sinusoidal waveforms displayed on an oscilloscope, both in the dual-trace mode and x-y mode. They must find the time delay, phase shift, and determine which waveform leads the other. The sign of the phase shift is also to be identified.
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v 2 (t)
v (t) 1
2 V/div 1 ms/div
PL-1: Two sinusoidal waveforms are displayed above on a dual-trace oscilloscope. Find the time delay |∆t| in ms and the phase shift |∆θ| in degrees between the two waveforms. Which waveform leads the other? What is the sign of ∆θ = θ 2 − θ 1?
A
B
2 V/div
v 2
v 1
2 V/div
PL-2: The above two sinusoidal waveforms are now displayed using the X-Y mode. Find the phase shift |∆θ| between the two waveforms.
