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Basic Oscilloscope Operation
25 questions By Tony R. Kuphaldt
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Question 13 of 25
Assuming the vertical sensitivity control is set to 0.5 volts per division, and the timebase control is set to 2.5 ms per division, calculate the amplitude of this sine wave (in volts peak, volts peak-to-peak, and volts RMS) as well as its frequency.
Reveal answer- Epeak = 2.25 V
- Epeak−to−peak = 4.50 V
- ERMS = 1.59 V
- f = 40 Hz
Notes:This question is not only good for introducing basic oscilloscope principles, but it is also excellent for review of AC waveform measurements.
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Question 14 of 25
Something is wrong with this circuit. Based on the oscilloscope’s display, determine whether the battery or the function generator is faulty:
Reveal answerThe battery is faulty.
Follow-up question: discuss how accidentally setting the coupling control on the oscilloscope to ÄC” instead of “DC” would also cause this waveform to show on the screen (even with a good battery).
Notes:This question challenges students to apply their knowledge of AC DC mixed signals to oscilloscope display patterns, in order to determine whether it is the battery or the function generator which has failed.
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Question 15 of 25
Something is wrong with this circuit. Based on the oscilloscope’s display, determine whether the battery or the function generator is faulty:
Reveal answerThe function generator is faulty.
Follow-up question: explain how this problem could be created simply by connecting the function generator to the circuit with the ground on the left-hand clip instead of the right-hand clip where it should be.
Notes:This question challenges students to apply their knowledge of AC DC mixed signals to oscilloscope display patterns, in order to determine whether it is the battery or the function generator which has failed.
this is so helpful thank you
Veľká vďaka za poučný článok. Ešte keby tam bolo napísané, ako sa vypočítala tá frekvencia 400 Hz, 40 Hz, 6,67 kHz