NI 5442
IQ Rate

IQ rate defines the rate at which data is processed by the OSP block. If the Data Processing Mode property is set to Real or the NIFGEN_ATTR_OSP_DATA_PROCESSING_MODE attribute is set to NIFGEN_VAL_OSP_REAL, then it is the rate at which each sample from waveform memory is taken from memory and inserted into the OSP block. If the Data Processing Mode property is set to Complex or the NIFGEN_ATTR_OSP_DATA_PROCESSING_MODE attribute is set to NIFGEN_VAL_OSP_COMPLEX, then it is the rate at which each complex sample is taken from memory and inserted into the OSP block.

The actual value of the Sample Rate property or the NIFGEN_ATTR_ARB_SAMPLE_RATE attribute is calculated by NI-FGEN based on the IQ rate. NI-FGEN calculates the total OSP interpolation to be used.

Note  When onboard signal processing is enabled by setting the OSP Enabled property or the NIFGEN_ATTR_OSP_ENABLED attribute, you cannot set the Sample Rate property or the NIFGEN_ATTR_ARB_SAMPLE_RATE attribute .