Chan Magnitude Error (1xEV-DO) (Reverse Direction Only)
Chan Magnitude Error (MagErr) is the difference in amplitude between the I/Q measured signal and the I/Q reference signal, for the specified Code Channel and Spread Code Length, expressed as a percentage of the square root of the mean power of the ideal signal (see EVM, Magnitude and Phase Error data results (%rms)). To the right of the MagErr value is the symbol with the largest (or Peak) MagErr (% Pk) and its value.
This data result only applies to reverse link direction signals.
Magnitude error is an indicator of the quality of the amplitude component of the modulated signal. For example: a very high magnitude error might indicate high incidental AM Amplitude Modulation - CW modulation using amplitude variation in proportion to the amplitude of the modulating signal. Usually taken as DSB-LC for commercial broadcast transmissions and DSB-SC for multiplexed systems. modulation on the signal.
The description of Error-vector magnitude (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.) includes a pictorial diagram that shows how Magnitude Error is derived.
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