Eq IQ Ref (Component Test)
The trace is the equalized counterpart to IQ Ref: the reference IQ signal used for the equalized 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. comparison. This trace is only computed when Computation Mode = Statistical.
How the equalization is applied depends on the EVM Equalization control: with Apply Inverse Channel to Measured (the default), this trace equals the raw reference; with Apply Forward Channel to Reference, the measured channel response is applied to the reference (more numerically stable when the channel response contains deep nulls). The Include Unbalanced in EVM Equalization control determines whether the unbalanced channel term is included.
To view the data as a constellation, select the trace format ().
See Also
