WF1945B 4-65
4.7 Equivalent noise bandwidth
The density of noise generated by the WF1945B is as shown in the following figure (a) "Frequency
characteristics of noise generated by the WF1945B."
The effective values (rms) of (a) are equal to those of white noise in the figure (b) "Frequency characteristics
of white noise," that follows. This equivalent bandwidth (500 kHz) is called the equivalent noise bandwidth.
(a) Frequency characteristics of noise
generated by the WF1945B
(b) Frequency characteristics of white
noise
500kHz
Noise density
[V/ Hz ]
oise density
[V/ Hz ]
About 320 kHz
-3dB
Frequency
Frequency
Effective values are equal
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