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PMA-NC252MP power amplifier

The above post looks like a good joke, right? It is and it is not. The precise and calibrated wideband DMM happily measures the class D ultrasonic rubbish and garbage and increases amplifier output voltage by the amount that is out of the audio band. So, for a precise audio rms measurement, it needs a LPF filter, though it measures perfect true rms.
 
This thing that is supposed to be slow measures with a good fidelity the switching frequency and its rms voltage value.
At what it costs, it ought to be accurate! Of course, I can do the same thing with my $35 handheld scope-generator...
 
Yes, level matching of multiple amplifiers is not straightforward when a Class D amplifier is involved.
 
At what it costs, it ought to be accurate! Of course, I can do the same thing with my $35 handheld scope-generator...
At this price range and a little higher I don't think we can expect great accuracy and freq range.
That's mine for example:

ex.PNG


(link)

True RMS only up to 1000Hz and with a meh accuracy.
I want a big Keysight!
:p
 
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