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Peak vs. Average Power Sensors


 

I'm trying to educate myself about the newer USB power sensors. When I look for example at the U2043XA (average) and U2044XA (peak and average) specs, I see that both can do at least 20K measurements/second. The 2044XA has a video bandwidth of 5 MHz, while that's not specified for the 2043XA.

My question is whether the averaging sensor can still provide a peak reading, if the modulation is slow enough.

If I can make 20K measurements per second, it seems I should be able to follow a modulation envelope of up to 10 kHz (Nyquist sampling) and use the computer to process that data stream to catch and report the peak level over some time period. In fact, in theory I could process all the samples to fully reconstruct the modulation.

Is that correct, or am I missing something?

Thanks,
John

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