What is the most true about an oscilloscope input. There might be more than one correct answer.Question 3Select one or more:1.You have to add a 50 ohm termination to a normal oscilloscope input to match the rest of a typical measurement set-up.2.A normal (cheaper) oscilloscope has an input impedance of 50 ohm and about 10 pF of capacitance so it is matched with the standard 50 ohm co-ax cables.3. A normal (cheaper) oscilloscope has an input impedance of either 1 mega-ohm or 10 mega-ohm and about 10 pF of capacitance.
Question
What is the most true about an oscilloscope input. There might be more than one correct answer.Question 3Select one or more:1.You have to add a 50 ohm termination to a normal oscilloscope input to match the rest of a typical measurement set-up.2.A normal (cheaper) oscilloscope has an input impedance of 50 ohm and about 10 pF of capacitance so it is matched with the standard 50 ohm co-ax cables.3. A normal (cheaper) oscilloscope has an input impedance of either 1 mega-ohm or 10 mega-ohm and about 10 pF of capacitance.
Solution
The most accurate statement about an oscilloscope input is option 3: "A normal (cheaper) oscilloscope has an input impedance of either 1 mega-ohm or 10 mega-ohm and about 10 pF of capacitance."
Here's why:
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While it's true that you might need to add a 50 ohm termination to an oscilloscope input in some cases, this is not always necessary. It depends on the specific measurement setup and the type of signal you're measuring. Therefore, this statement is not universally true.
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A typical oscilloscope does not have an input impedance of 50 ohm. Instead, most oscilloscopes have an input impedance of 1 mega-ohm or 10 mega-ohm. This high input impedance is designed to minimize the loading effect of the oscilloscope on the circuit being measured. Therefore, this statement is not accurate.
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This statement is the most accurate. A typical oscilloscope has an input impedance of either 1 mega-ohm or 10 mega-ohm, which helps to minimize the loading effect on the circuit being measured. The input capacitance of about 10 pF is also typical for many oscilloscopes.
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