Specifies the DPD model used by the DPD measurement.

Syntax

int32 __stdcall RFmxSpecAn_DPDCfgDPDModel(niRFmxInstrHandle instrumentHandle, char selectorString[], int32 dpdModel)

Parameters

NameDirectionTypeDescription
instrumentHandle[in]niRFmxInstrHandle

This parameter specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr_Initialize function.

selectorString[in]char

This parameter specifies a Selector String comprising of the signal name. If you do not specify the signal name, the default signal instance is used. The default value is "" (empty string).
Example:
""
"signal::sig1"
You can use the RFmxSpecAn_BuildSignalString function to build the selector string.

dpdModel[in]int32

This parameter specifies the DPD model used by the DPD measurement. The default value is Lookup Table.

Name

Value

Description

RFMXSPECAN_VAL_DPD_MODEL_LOOKUP_TABLE

0 (0x0)

This model computes the complex gain coefficients applied when performing digital predistortion to linearize systems with negligible memory effects.

RFMXSPECAN_VAL_DPD_MODEL_MEMORY_POLYNOMIAL

1 (0x1)

This model computes the memory polynomial predistortion coefficients used to linearize systems with moderate memory effects.

RFMXSPECAN_VAL_DPD_MODEL_GENERALIZED_MEMORY_POLYNOMIAL

2 (0x2)

This model computes the generalized memory polynomial predistortion coefficients used to linearize systems with significant memory effects.

RFMXSPECAN_VAL_DPD_MODEL_DECOMPOSED_VECTOR_ROTATION

3 (0x3)

This model computes the Decomposed Vector Rotation model predistortion coefficients used to linearize wideband systems with significant memory effects.

Returns

Returns the status code of this operation. The status code either indicates success or describes an error or warning condition. Examine the status code from each call to an RFmx function to determine if an error has occurred.

To obtain a text description of the status code and additional information about the error condition, call the RFmxSpecAn_GetError function.

The general meaning of the status code is as follows:

Value

Meaning

0

Success

Positive Values

Warnings

Negative Values

Errors