IviRFSigGen_ConfigureIQImpairment
IviRFSigGenIQImpairment Capability Group
C Function Prototype
ViStatus IviRFSigGen_ConfigureIQImpairment (ViSession vi, ViReal64 iOffset, ViReal64 qOffset, ViReal64 ratio, ViReal64 skew);
Purpose
This function configures the settings that simulate or correct impairment for the signal generator's IQ modulation. These settings are only used if the IVIRFSIGGEN_ATTR_IQ_IMPAIRMENT_ENABLED attribute is set to VI_TRUE.
Parameters
| Name | Type | Description |
|---|---|---|
| vi | ViSession | The ViSession handle that you obtain from the IviRFSigGen_init or IviRFSigGen_InitWithOptions function. The handle identifies a particular instrument session. Default Value: None |
| iOffset | ViReal64 | Specifies an origin offset voltage to the I signal. The range of allowable values is -100% to +100%. The driver uses this value to set the IVIRFSIGGEN_ATTR_IQ_I_OFFSET attribute. Units: Percent (%) Default Value: 0.0 |
| qOffset | ViReal64 | Specifies an origin offset voltage to the Q signal. The range of allowable values is -100% to +100%. The driver uses this value to set the IVIRFSIGGEN_ATTR_IQ_Q_OFFSET attribute. Units: Percent (%) Default Value: 0.0 |
| ratio | ViReal64 | Specifies the gain imbalance between the I and Q channels. For no imbalance this value is set to 0 %. The driver uses this value to set the IVIRFSIGGEN_ATTR_IQ_RATIO attribute. Units: Percent (%) Default Value: 0.0 |
| skew | ViReal64 | Specifies the adjustment of the phase angle between the I and Q vectors. If this skew is zero, the phase angle is 90 degrees. The driver uses this value to set the IVIRFSIGGEN_ATTR_IQ_SKEW attribute. Units: Degrees Default Value: 0.0 |