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Scope Noise Floor Measurement

Question asked by Evgy on Apr 26, 2011
Latest reply on May 17, 2011 by algoss
I am measuring the noise floor of the scope, I have measured it in two ways:
1.     Measure the RMS noise – received ~-40dBm
2.     Made an FFT on the noise and measured the level in dBm – received ~85dBm
I expect two vales to be the same, could you point me to my error?  

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