RFmxNR_ModAccFetchRMSEVMLowPerSymbolMeanTrace
- Updated2024-10-14
- 2 minute(s) read
RFmxNR_ModAccFetchRMSEVMLowPerSymbolMeanTrace
int32 __stdcall RFmxNR_ModAccFetchRMSEVMLowPerSymbolMeanTrace (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, float64* x0, float64* dx, float32 RMSEVMLowPerSymbolMean[], int32 arraySize, int32* actualArraySize);
Purpose
Fetches the EVM per symbol trace for all confgured slots. The EVM is obtained by using FFT window position Delta_C-W/2.
Use "carrier<k>" or "subblock<n>" or "subblock<n>/carrier<k>" as the selector string to read results from this function.
Parameters
| Input | ||
| Name | Type | Description |
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxNR_Initialize function. |
| selectorString | char[] | Specifies a selector string comprising of the signal name, result name, subblock number, and carrier number. 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. Example: "subblock0/carrier0" "signal::sig1/subblock0/carrier0" "result::r1/subblock0/carrier0" "signal::sig1/result::r1/subblock0/carrier0" You can use the RFmxNR_BuildCarrierString function to build the selector string. |
| timeout | float64 | Specifies the timeout, in seconds, for fetching the specified measurement. 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 |
| x0 | float64* | Returns the start point of the of the resource block. |
| dx | float64* | Returns the subcarrier spacing. |
| RMSEVMLowPerSymbolMean | float32[] | Returns an array of the EVM per symbol for all confgured slots. |
| 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 RFmxNR_GetError function. The general meaning of the status code is as follows:
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