Anritsu AWGN MU368060A - Manual (Page 72)

Section 8 Performance Test
8-6.
Reference Level : 10 dBm
Amplitude Scale : 10 dBm
[7] Perform waveform averaging with the spectrum analyzer.
[8] Measure the power for calculated bandwidth by using the noise
measurement function of the spectrum analyzer.
[9] Measure the power for all bands by using the noise measurement
function of the spectrum analyzer.
[10] Calculate the calculated level from the values measured in Step
[3] and [4].
Calculated Level = all bands [dBm] - calculated bandwidth [dBm]
[11] Calculate the difference between the calculated level obtained
using the formula above and that displayed on the MG3681A
screen.