RFmxBT_ModAccFetchConstellationTraceSplit
- Updated2025-04-08
- 2 minute(s) read
Fetches the demodulated symbols from the enhanced data rate (EDR) portion of the EDR packet. This function is valid only for EDR packets.
Syntax
int32 __stdcall RFmxBT_ModAccFetchConstellationTraceSplit(niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, float32 constellationI[], float32 constellationQ[], int32 arraySize, int32 *actualArraySize)
Parameters
| Name | Direction | Type | Description |
|---|---|---|---|
| instrumentHandle | [in] | niRFmxInstrHandle | This parameter specifies the RFmx session refnum. This parameter is obtained from the RFmxInstr_Initialize function. |
| selectorString | [in] | char | This parameter specifies a Selector String comprising of the signal name and the result name. If you do not specify the signal name, the default signal instance is used. If you do not specify the result name, the default result instance is used. The default value is "" (empty string). |
| timeout | [in] | float64 | This parameter specifies the timeout for fetching the specified measurement. This value is expressed in seconds. Set this value to an appropriate time, longer than expected for fetching the measurement. A value of -1 specifies that the function waits until the measurement is complete. The default value is 10. |
| constellationI | [out] | float32 | This parameter Returns the real part of array of demodulated symbols from over the EDR portion of the EDR packet. |
| constellationQ | [out] | float32 | This parameter Returns the imaginary part of array of demodulated symbols from over the EDR portion of the EDR packet. |
| arraySize | [in] | int32 | Specifies the size of the array. Set the arraySize parameter to 0 to get the size of all the arrays in the actualArraySize parameter. |
| actualArraySize | [out] | int32 * | Returns the actual size of the array, if you pass NULL to all output array parameters, and set the arraySize parameter to 0. |
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 RFmxBT_GetError function.
The general meaning of the status code is as follows:
Value | Meaning |
|---|---|
0 | Success |
Positive Values | Warnings |
Negative Values | Errors |