FetchIQImpairments(string, double, out double, out double, out double, out double)
- Updated2025-10-13
- 2 minute(s) read
Fetches the origin offset and gain imbalance measurement results for GSM/EDGE/EGPRS.
Syntax
Namespace: NationalInstruments.RFmx.GsmMX
public int FetchIQImpairments(string selectorString, double timeout, out double meanIQGainImbalance, out double maximumIQGainImbalance, out double meanIQOriginOffset, out double maximumIQOriginOffset)
Parameters
| Name | Type | Description |
|---|---|---|
| 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). |
| 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 | out double | Upon return, contains the mean of I/Q gain imbalance values over all the measured 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 | out double | Upon return, contains the maximum of I/Q gain imbalance values over all the measured 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 | out double | Upon return, contains the mean of I/Q origin offset values over all the measured 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 | out double | Upon return, contains the maximum of I/Q origin offset values over all the measured 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. |
Returns
Returns the status code of this method. The status code either indicates success or describes a warning condition.