FetchIQImpairments(string, double, out double, out double, out double)

Specifies a selector string comprising of the result name. If you do not specify the result name, the default result instance is used. Example:
""
""
"result::r1"
You can use the BuildResultString(string) method to build the selector string.

Specifies the timeout for fetching the specified measurement. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the method waits until the measurement is complete. This value is expressed in seconds.

Upon return, contains the I/Q origin offset. This value is expressed in dB. I/Q origin offset is the ratio of the mean value of the signal to the RMS value of the signal. When you set the SetAveragingEnabled(string, RFmxWlanMXDsssModAccAveragingEnabled) method to True , this parameter returns the mean of the I/Q origin offset results computed for each averaging count.

Upon return, contains the I/Q gain imbalance results. This value is expressed in dB. I/Q gain imbalance is the ratio of the mean amplitude of the in-phase (I) signal to the mean amplitude of the quadrature-phase (Q) signal. When you set the DSSSModAcc Averaging Enabled method to True , this parameter returns the mean of the I/Q gain imbalance results computed for each averaging count.

Upon return, contains the I/Q quadrature error. This value is expressed in degrees. Quadrature error is the deviation in angle from 90 degrees between the in-phase (I) and quadrature-phase (Q) signals. When the DSSSModAcc Averaging Enabled method is set to True , this parameter returns the mean of the I/Q quadrature error results computed for each averaging count.