Agilent Spectrum Analysis Basics - Agilent Technologies
Agilent Spectrum Analysis Basics - Agilent Technologies
Agilent Spectrum Analysis Basics - Agilent Technologies
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Let’s see what happened to our dynamic range as a result of our concern<br />
with measurement error. As Figure 6-6 shows, second-order-distortion<br />
dynamic range changes from 72.5 to 61 dB, a change of 11.5 dB. This is one<br />
half the total offsets for the two curves (18 dB for distortion; 5 dB for noise).<br />
Third-order distortion changes from 81.7 dB to about 72.7 dB for a change<br />
of about 9 dB. In this case, the change is one third of the 18 dB offset for the<br />
distortion curve plus two thirds of the 5 dB offset for the noise curve.<br />
7<br />
6<br />
Error in displayed signal level (dB)<br />
5<br />
4<br />
3<br />
2<br />
1<br />
0<br />
0 1 2 3 4 5 6 7 8<br />
Displayed S/N (dB)<br />
Figure 6-7. Error in displayed signal amplitude due to noise<br />
79