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NI 5791 single sine and multi sine wave streaming

Hi

 

I'd like to generate and stream the single sine or multi sine waves with same power by using NI5791 streaming sample project.
(equipment : 7966R + NI5791, centre frequency : 2.4GHz)
I generated several waveforms that are same power but diffierent PAPR as shown in attached png file.
And I measured peak voltage of each waveforms by using RF edge detector.
As a result, the peak voltage of waveforms are almost same. I expected there are big gap of peak voltages among the waveforms because generated baseband signal has a big differnce of peak voltage.
Does anyone can explain why NI 5791 output a same peak voltage from different waveforms?
And how can I fix the equipment generate an output with high PAPR?

 

Thank you.

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