RFmxDemodMXDDemodResults.FetchOffsetEvm Method
- Updated2024-07-17
- 2 minute(s) read
RFmx
Fetches the offset error vector magnitude (EVM).
Namespace: NationalInstruments.RFmx.DemodMX
Assembly: NationalInstruments.RFmx.DemodMX.Fx40 (in NationalInstruments.RFmx.DemodMX.Fx40.dll) Version: 24.5.0.49286 (24.5.0.49286)
Syntax
public int FetchOffsetEvm( string selectorString, double timeout, out double meanRmsOffsetEvm, out double maximumRmsOffsetEvm, out double maximumPeakOffsetEvm, out double meanPeakOffsetEvm )
Public Function FetchOffsetEvm ( selectorString As String, timeout As Double, <OutAttribute> ByRef meanRmsOffsetEvm As Double, <OutAttribute> ByRef maximumRmsOffsetEvm As Double, <OutAttribute> ByRef maximumPeakOffsetEvm As Double, <OutAttribute> ByRef meanPeakOffsetEvm As Double ) As Integer
Parameters
- 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.
- meanRmsOffsetEvm Double
- Upon return, contains the mean of the RMS EVM, measured per acquisition, after removing the offset between the I and Q channels of offset quadrature PSK (OQPSK) demodulated signal.
- maximumRmsOffsetEvm Double
- Upon return, contains the maximum of the RMS EVM, measured per acquisition, after removing the offset between the I and Q channels of OQPSK demodulated signal.
- maximumPeakOffsetEvm Double
- Upon return, contains the maximum of the peak EVM, measured per acquisition, after removing the offset between the I and Q channels of OQPSK demodulated signal.
- meanPeakOffsetEvm Double
- Upon return, contains the mean of the peak EVM, measured per acquisition, after removing the offset between the I and Q channels of OQPSK demodulated signal.
Return Value
Int32Returns the status code of this method. The status code either indicates success or describes a warning condition.
Remarks
This method maps to the RFmxDemod_DDemodFetchOffsetEVM() function in C.