RFmxGsmMXModAccResults.FetchIQImpairments Method
- Updated2024-07-17
- 2 minute(s) read
RFmx
Fetches the origin offset and gain imbalance measurement results for GSM/EDGE/EGPRS.
Namespace: NationalInstruments.RFmx.GsmMX
Assembly: NationalInstruments.RFmx.GsmMX.Fx40 (in NationalInstruments.RFmx.GsmMX.Fx40.dll) Version: 24.5.0.49286 (24.5.0.49286)
Syntax
public int FetchIQImpairments( string selectorString, double timeout, out double meanIQGainImbalance, out double maximumIQGainImbalance, out double meanIQOriginOffset, out double maximumIQOriginOffset )
Public Function FetchIQImpairments ( selectorString As String, timeout As Double, <OutAttribute> ByRef meanIQGainImbalance As Double, <OutAttribute> ByRef maximumIQGainImbalance As Double, <OutAttribute> ByRef meanIQOriginOffset As Double, <OutAttribute> ByRef maximumIQOriginOffset As Double ) As Integer
Parameters
- selectorString String
-
Specifies a selector string comprising of the result name. If you do not specify the result name, the default result instance is used. The default is "" (empty string).
Example:
""
"result::r1"
You can use the BuildResultString(String) method to build the selector string. - timeout Double
- Specifies the timeout for fetching the specified measurement. This value is expressed in seconds. 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.
- meanIQGainImbalance Double
-
Upon return, contains the mean of I/Q gain imbalance values measured over all acquisition time slots. This value is expressed in dB. The presence of quadrature skew in the signal affects the measurement of I/Q gain imbalance.
- maximumIQGainImbalance Double
-
Upon return, contains the maximum of I/Q gain imbalance values measured over all acquisition time slots. This value is expressed in dB. The presence of quadrature skew in the signal affects the measurement of I/Q gain imbalance.
- meanIQOriginOffset Double
-
Upon return, contains the mean of I/Q origin offset values measured over all acquisition time slots. This value is expressed in dB. Presence of I/Q gain imbalance in the signal affects the I/Q origin offset measurement. The measurement returns this result for GSM/EDGE/EGPRS.
- maximumIQOriginOffset Double
-
Upon return, contains the maximum of I/Q origin offset values measured over all acquisition time slots. This value is expressed in dB. Presence of I/Q gain imbalance in the signal affects the I/Q origin offset measurement. The measurement returns this result for GSM/EDGE/EGPRS.
Return Value
Int32Returns the status code of this method. The status code either indicates success or describes a warning condition.