Hello,
I am trying to measure the noise amplitude density of a differential voltage signal using a Agilent 35670A. The differential channels of the signal are connected to input channel 1 and 2 of the analyzer. My proceeding is as follows:
I define the math functions
F1 = Time1 - Time2
F2 = PSD(FFT(F1)*FFT(F1))
this gives me the results in dB V^2/Hz. To get amplitude density in units V/sqrt-Hz I calculate
n = sqrt(10^(N/10))
where N are the result values from F2. I'm not really convinced that this is correct anymore as I can't find detailed information on the math functions and their inputs in the decumentation. Can someone confirm that this is correct or give advice on how to achive what I need?
Thanks a lot!
Alex
I am trying to measure the noise amplitude density of a differential voltage signal using a Agilent 35670A. The differential channels of the signal are connected to input channel 1 and 2 of the analyzer. My proceeding is as follows:
I define the math functions
F1 = Time1 - Time2
F2 = PSD(FFT(F1)*FFT(F1))
this gives me the results in dB V^2/Hz. To get amplitude density in units V/sqrt-Hz I calculate
n = sqrt(10^(N/10))
where N are the result values from F2. I'm not really convinced that this is correct anymore as I can't find detailed information on the math functions and their inputs in the decumentation. Can someone confirm that this is correct or give advice on how to achive what I need?
Thanks a lot!
Alex