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Plotting Signal Power vs Time question

Hello,
Is there any way to plot on a waveform graph the power of a sinewave signal in dBm around f=36 Khz in real time? I am making up a simple example below to better ilustrate the question:
Let's consider the signal  Power=-20dBm and is pretty constant. At this point the graph should show an almost  flat line @ -20dBm mark. When a quick power variation occurs (e.g 1ms )the graph should be able to  register this variation as a negative spike (e.g -100dBm).
Your help is appreciated.
Thanks
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You can do this if you have LabVIEW Real-Time and have the supporting hardware for this. You can a remote front panel application to monitor the values real-time.

LabVIEW itself runs on Windows which is not a RT system.
Warm regards,
Karunya R
National Instruments
Applications Engineer
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