RFmxTDSCDMA_ModAccFetchConstellationTrace
- Updated2024-10-14
- 2 minute(s) read
RFmxTDSCDMA_ModAccFetchConstellationTrace
int32 __stdcall RFmxTDSCDMA_ModAccFetchConstellationTrace (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, NIComplexSingle constellation[], int32 arraySize, int32* actualArraySize);
Purpose
Fetches the constellation trace of the received TD-SCDMA signal. If the averaging is enabled, this trace refers to the last averaging iteration.
Parameters
| Input | ||
| Name | Type | Description |
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxTDSCDMA_Initialize function. |
| selectorString | char[] | Specifies a selector string comprising of the signal name and 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. examples: "" "signal::sig1" "result::r1" "signal::sig1/result::r1" You can use the RFmxTDSCDMA_BuildSignalString function to build the selector string. |
| timeout | float64 | 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. |
| arraySize | 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. |
| Output | ||
| Name | Type | Description |
| constellation | NIComplexSingle[] | Returns an array of complex chips of the corrected signal on which the ModAcc measurements are performed. You can use these chips to obtain the constellation diagram. |
| actualArraySize | int32* | Returns the actual size of the array, if you pass NULL to all output array parameters, and set the arraySize parameter to 0. |
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 RFmxTDSCDMA_GetError function. The general meaning of the status code is as follows:
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