FetchEvm(string, double, out double, out double, out double, out double, out double)
- Updated2025-04-08
- 1 minute(s) read
Fetches the error vector magnitude (EVM) measurements.
Syntax
Namespace: NationalInstruments.RFmx.DemodMX
public int FetchEvm(string selectorString, double timeout, out double meanRmsEvm, out double maximumRmsEvm, out double meanModulationErrorRatio, out double maximumPeakEvm, out double meanPeakEvm)
Remarks
This method maps to the RFmxDemod_DDemodFetchEVM() function in C.
Parameters
| Name | Type | Description |
|---|---|---|
| selectorString | string | Specifies the result name. Example: "", "result::r1". You can use the BuildResultString(string) method to build the selectorString. |
| timeout | double | Specifies the time, in seconds, for which the method waits for the measurement to complete. A value of -1 specifies that the method waits until the measurement is complete. |
| meanRmsEvm | out double | Upon return, contains the mean of the RMS EVM, as a percentage, measured per acquisition. |
| maximumRmsEvm | out double | Upon return, contains the maximum of the RMS EVM, as a percentage, measured per acquisition. |
| meanModulationErrorRatio | out double | Upon return, contains the modulation error ratio, in dB. |
| maximumPeakEvm | out double | Upon return, contains the maximum of the peak EVM measured per acquisition. |
| meanPeakEvm | out double | Upon return, contains the mean of the peak EVM measured per acquisition. |
Returns
Returns the status code of this method. The status code either indicates success or describes a warning condition.