EVM (6GR)
The traces in the CCn and Selected Display CC menus are identical and show the same CC0 information.
shows the Root Mean Square (RMS) of the error vector magnitudes for all included channels and signals, over all symbol times in the measurement interval.
EVM Error vector magnitude (EVM): A quality metric in digital communication systems. See the EVM metric in the Error Summary Table topic in each demodulator for more information on how EVM is calculated for that modulation format. can also be shown in units of dB rather than percent — see Report EVM in dB. How the EVM itself is computed is controlled by the other parameters in the EVM Settings group.
Calculation
The EVM for a single point is the distance between the tips of the measured IQ and reference IQ vectors. That distance is normalized to the average power of the signal and expressed as a percentage.
See Also
