Returns the mean of the RMS EVM values for a QPSK signal. This value is expressed as a percentage. This value is obtained by averaging the RMS EVMs over all averaging iterations. The number of acquisitions is specified by the value of the QEVM Averaging Count property.

The EVM of a chip is the magnitude of the vector difference between the received chip and the ideal chip. The RMS EVM is obtained from all the chips in the measurement interval.

You do not need to use a selector string to read this result for default signal and result instance. Refer to the Selector Strings topic for information about the string syntax for named signals and results.

Remarks

The following table lists the characteristics of this property.

Short Name QEVM Results Mean RMS EVM (%)
Data type cdbl.png
Permissions Read Only
High-level VIs RFmxWCDMA QEVM Fetch
Resettable No