RFmx WCDMA 19.1 Help

Edition Date: October 2019

Part Number: 375421H-01

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RFmx WCDMA 19.1 Help
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int32 __stdcall RFmxInstr_CfgExternalAttenuationInterpolationSpline( niRFmxInstrHandle instrumentHandle, char selectorString[], char tableName[] );


Selects the spline interpolation method when interpolating parameters for the specified table. If the carrier frequency does not match a row in the S-parameter table, this function performs a spline interpolation based on the entries above and below the rows in the table.

Currently interpolation is supported only for S-parameter tables.

Supported Devices: PXIe-5663/5663E, PXIe-5665, PXIe-5668, PXIe-5644/5645/5646, PXIe-5830/5831/5840/5841


Name Type Description
instrumentHandle niRFmxInstrHandle Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxInstr_Initialize function.
selectorString char[] Specifies the calibration plane name in which either S-parameter table or external attenuation table is stored. This input accepts the calibration plane name with the "calplane::" prefix. If you do not specify the calibration plane name, the default calibration plane instance is used. If you do not specify the calibration plane name, the default calibration plane instance is used. The default value is "" (empty string).
For PXIe-5830/5831 - Port names should also be specified along with Calplane names, so the valid selector string format is "calplane::/port::". If you specify "port::all", all ports are considered configured. Use RFmxInstr_GetAvailablePorts function to get the valid port names.

tableName char[] Specifies the name to be associated with either the S-parameter table or the external attenuation table within a calibration plane. Provide a unique name, such as "table1" to configure the table. The default value is "" (empty string), which refers to the default external attenuation table.

Return Value

Name Type Description
status int32 Returns the status code of this operation. The status code either indicates success or describes an error or warning. 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 RFmxInstr_GetError function.

The general meaning of the status code is as follows:

Value Meaning
0 Success
Positive Values Warnings
Negative Values Errors


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