RFmxWlanMXOfdmModAccResults.FetchCompositeRmsEvm Method

public int FetchCompositeRmsEvm(
	string selectorString,
	double timeout,
	out double compositeRmsEvmMean,
	out double compositeDataRmsEvmMean,
	out double compositePilotRmsEvmMean
)

Public Function FetchCompositeRmsEvm ( 
	selectorString As String,
	timeout As Double,
	<OutAttribute> ByRef compositeRmsEvmMean As Double,
	<OutAttribute> ByRef compositeDataRmsEvmMean As Double,
	<OutAttribute> ByRef compositePilotRmsEvmMean As Double
) As Integer

Parameters

selectorString

Type: SystemString
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.

timeout

Type: SystemDouble
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.

compositeRmsEvmMean

Type: SystemDouble
Upon return, contains the RMS EVM of all subcarriers in all OFDM symbols. When you set the SetEvmUnit(String, RFmxWlanMXOfdmModAccEvmUnit) method to Percentage , the measurement returns this result as a percentage. When you set the OFDMModAcc EVM Unit method to dB , the measurement returns this result in dB. When you set the SetAveragingEnabled(String, RFmxWlanMXOfdmModAccAveragingEnabled) method to True , this parameter returns the mean of the composite RMS EVM results computed for each averaging count.

compositeDataRmsEvmMean

Type: SystemDouble
Upon return, contains the RMS EVM of data-subcarriers in all OFDM symbols. When you set the SetEvmUnit(String, RFmxWlanMXOfdmModAccEvmUnit) method to Percentage , the measurement returns this result as a percentage. When you set the OFDMModAcc EVM Unit method to dB , the measurement returns this result in dB. When you set the OFDMModAccAveragingEnabled method to True , this parameter returns the mean of the composite data RMS EVM results computed for each averaging count.

compositePilotRmsEvmMean

Type: SystemDouble
Upon return, contains the RMS EVM of pilot-subcarriers in all OFDM symbols. When you set the SetEvmUnit(String, RFmxWlanMXOfdmModAccEvmUnit) method to Percentage , the measurement returns this result as a percentage. When you set the OFDMModAcc EVM Unit method to dB , the measurement returns this result in dB. When you set the OFDMModAccAveragingEnabled method to True , this parameter returns the mean of the composite pilot RMS EVM results computed for each averaging count.

Return Value

Reference