Tektronix AFG2021 Technical Reference page 41

Sample: reading
reading - reference
Cn =
AFG2021 Arbitrary Function Generator Specifications and Performance Verification
Measurement
THD =
1.5 dBm -58.5 dBm
0 -60 dBm
1.000 0.001
0.1987%
NOTE.
When all the harmonic components are -62 dBm or less, the calculation
of THD can be skipped because it is THD < 0.2%.
8. Verify that the THD is less than 0.2%.
-58.5 dBm -63.5 dBm
-60 dBm -65 dBm
0.001 0.000562
Performance verification
-58.5 dBm -63.5 dBm
-60 dBm -65 dBm
0.001 0.000562
Limit
< 0.2%
-63.5 dBm
-65 dBm
0.000562
Limit
< 0.2%
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