RFmxEVDO_CDAFetchUplinkSymbolEVM
- Updated2024-10-14
- 2 minute(s) read
RFmxEVDO_CDAFetchUplinkSymbolEVM
int32 __stdcall RFmxEVDO_CDAFetchUplinkSymbolEVM (niRFmxInstrHandle instrumentHandle, char selectorString[], float64 timeout, float64* RMSSymbolEVM, float64* peakSymbolEVM, float64* RMSSymbolMagnitudeError, float64* RMSSymbolPhaseError, float64* meanSymbolPower, float64* frequencyError, float64* chipRateError);
Purpose
Fetches the modulation accuracy related measures for the configured measurement channel.
Parameters
| Input | ||
| Name | Type | Description |
| instrumentHandle | niRFmxInstrHandle | Specifies the instrument session. The RFmx driver obtains this parameter from the RFmxEVDO_Initialize function. |
| selectorString | char[] | Specifies a selector string comprising of the signal name. If you do not specify the signal name, the default signal instance is used. Examples: "" "signal::sig1" You can use the RFmxEVDO_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. |
| RMSSymbolEVM | float64* | Returns the RMS symbol EVM of the configured measurement channel. This value is expressed as a percentage.
|
| peakSymbolEVM | float64* | Returns the peak symbol EVM of the configured measurement channel. This value is expressed as a percentage. |
| RMSSymbolMagnitudeError | float64* | Returns the RMS symbol magnitude error of the configured measurement channel. This value is expressed as a percentage.
|
| RMSSymbolPhaseError | float64* | Returns the RMS symbol phase error of the configured measurement channel. This value is expressed in degrees. |
| meanSymbolPower | float64* | Returns the mean symbol power of the configured measurement channel. This value is expressed in dB or dBm.
|
| frequencyError | float64* | Returns the frequency error. This value is expressed in Hz. |
| chipRateError | float64* | Returns the chip rate error. This value is expressed in ppm. |
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 RFmxEVDO_GetError function. The general meaning of the status code is as follows:
|
||||||||