More on Measuring Small Signals

Question: I’m looking at a small differential signal.  Would you still suggest your active probes?

Answer: If you’re looking at a small differential signal, or even a ground-referenced signal in a noisy environment, a differential probe can be the best choice for accurate measurements. A differential probe measures the voltage difference at the probe tip, eliminating common-mode signals from the measurement. Because the oscilloscope only “sees” the difference signal, the signal-to-noise ratio and the measurement accuracies are improved.

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Explore posts in the same categories: Ask Scope Guru Q/A, Probes

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