3-76L3 What stage determines the maximum frequency response of an oscilloscope?

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Multiple Choice

3-76L3 What stage determines the maximum frequency response of an oscilloscope?

The stage that sets how fast the oscilloscope can faithfully reproduce changes is the vertical amplifier. It is the part of the signal path that boosts the input signal and defines the highest frequency that can pass through without being attenuated or distorted. The wider the vertical bandwidth, the more of the signal’s high-frequency components are preserved, resulting in a cleaner, sharper display of fast edges and quick transitions. If the vertical bandwidth is limited, rising and falling edges get rounded and high-frequency content is lost, even though the time base might be able to sweep quickly. The horizontal sweep (time base) determines how the signal is laid out along the time axis and affects time resolution, not the amplitude fidelity of high-frequency components. The power supply provides the necessary operating rails and overall stability but doesn’t set the frequency response.

The stage that sets how fast the oscilloscope can faithfully reproduce changes is the vertical amplifier. It is the part of the signal path that boosts the input signal and defines the highest frequency that can pass through without being attenuated or distorted. The wider the vertical bandwidth, the more of the signal’s high-frequency components are preserved, resulting in a cleaner, sharper display of fast edges and quick transitions. If the vertical bandwidth is limited, rising and falling edges get rounded and high-frequency content is lost, even though the time base might be able to sweep quickly.

The horizontal sweep (time base) determines how the signal is laid out along the time axis and affects time resolution, not the amplitude fidelity of high-frequency components. The power supply provides the necessary operating rails and overall stability but doesn’t set the frequency response.

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