IQ Meas (Component Test)

Menu Path: Trace > Data > Component Test > EVM > Channel N > IQ Meas

The IQ Meas trace shows the measured, symbol-aligned IQ signal for the channel as a time-domain trace sampled at 2 samples per symbol. The I and Q values are normalized to an RMS value of 1 (unitless).

Compare this trace against IQ Ref, the reference IQ signal it is time-aligned with; the difference between the two is the Error Vector Time trace and drives the EVM summary result. When measurement and reference channels differ (Measured Stimulus reference), the traces are grouped as Channel NxM.

To view the data as a constellation, select the I-Q trace format (Trace > Format > Format:); the default time-domain formats show the real (I) and imaginary (Q) components versus time.

See Also

IQ Ref

Eq IQ Meas

Error Vector Time

Available Trace Data