RFmx Bluetooth 19.1 Help

Edition Date: October 2019

Part Number: 377889C-01

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int32 __stdcall RFmxBT_AnalyzeIQ1WaveformSplit (niRFmxInstrHandle instrumentHandle, char selectorString[], char resultName[], float64 x0, float64 dx, float32 I[], float32 Q[], int32 arraySize, int32 reset, int64 reserved);


Performs the enabled measurements on the I/Q complex waveform that you specify in I and Q parameter. Call this function after you configure the signal and measurement attributes. You can fetch measurement results using the Fetch functions or result attributes. Use this function only if the Recommended Acquisition Type attribute value is either IQ or IQorSpectral.
When using the Analysis-Only mode in RFmxBT, the RFmx driver ignores the RFmx hardware settings such as reference level and attenuation. The only RF hardware settings that are not ignored are the center frequency and trigger type, since it is needed for spectral measurement traces as well as some measurements such as ModAcc, ACP, and SEM.


Name Type Description
instrumentHandle niRFmxInstrHandle Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxBT_Initialize function.
selectorString char[] >Specifies a selector string comprising of the signal name and result name. The result name can either be specified through this input or the resultName parameter. If you do not specify the signal name, the default signal instance is used. If you do not specify the result name in this input, either the result name specified by resultName parameter or the default result instance is used.
You can use the RFmxBT_BuildSignalString function to build the selector string.
resultName char[] Specifies the name to be associated with measurement results. Provide a unique name, such as "r1" to enable fetching of multiple measurement results and traces. This input accepts the result name with or without the "result::" prefix.
x0 float64 Specifies the start time of the input Y array. This value is expressed in seconds.
dx float64 Specifies the time interval between the samples in the input Y array. This value is expressed in seconds. The reciprocal of dx indicates the I/Q rate of the input signal.
I float32[] Specifies an array of the real part of complex-valued time domain data. This array corresponds to the in-phase (I) data.
Q float32[] Specifies an array of the imaginary part of complex-valued time domain data. This array corresponds to the quadrature-phase (Q) data.
arraySize int32 Specifies the size of the array.
reset int32 Resets measurement averaging. If you enable averaging, set this parameter to TRUE for first record and FALSE for subsequent records.
reserved int64 Reserved.

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 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 RFmxBT_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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