Measuring Phase Shift with an Oscilloscope (Full Lecture)
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- Опубликовано: 4 окт 2024
- ERROR @ 15:37 4.2 divisions at 250us per division would yield a phase shift of 68.0 degrees.
ERROR @ 17:23 1.4 divisions at 250us per division would yield a phase shift of 28.3 degrees.
In this lesson we'll learn how to use an oscilloscope to measure the relative phase shift between two waveforms displayed on the same horizontal time axis. We’ll examine traditional manual calculation methods as well as time saving automated methods offered by some modern oscilloscopes. (Full Lecture)
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Great tutorial!
Great video!!!! There were a few minor errors from notes im guessing, but the formulas given and explanations were great. I enjoyed tracking with you during this video.
15:37 Correct me if I'm wrong. Shouldn't the phase difference be greater than 4.2 div? Because there are 5 sub divisions and hence each sub division would be 0.2 of the division. And since it's greater than 4 divisions + 1 subdivision it would be slightly greater than 4.2 div
Good catch! I was looking over my notes on this lecture and I should be saying 4.21 divisions instead of 4.12. Yes, 4.2 divisions at 250us per division would yield a phase shift of 68.0 degrees.
14:20 i believe time division is 6.2 not 6.1 so the time is 15.5ms and its the same result of 1/f of the osci. Any way you are great thanks a lot.
You are correct. It should 6.2 div on the time axis. Each subdivision is equal to 0.2 divisions. So 6.2 div [(0.0025)s/div] = 0.0155s = 15.5 ms.
awesome
17:23 shouldn't it be 1.4div*250ns/div?
Yes, it's looking like 1.4 divisions at 250us/div (not ns) so the phase shift should be approximately 28.3 degrees.
Why we need this?
Where we can apply this
At 16.10 I see not 4.12 but 4.25 at least.1.06 ms. Angle to be 69°
Jim used to have lectures about digital electronics through a college but I lost the links or it got taken down.
Check out the cgcclive channel: ruclips.net/p/PLX7ZPgPJWZNc6zRvIGjDFOr6CYKz9DZa3 and ruclips.net/p/PLX7ZPgPJWZNcDCIwqswjjaafqb3U2sVCb stay in touch because I plan on issuing new digital electronics lectures based on PLCs.
@@bigbadtech Thank you, Jim. Your lectures have helped me so much.
At 23.35. When measured manually the angle is 32.3°. Never trust machine :)