FetchEvm(string, double, out double, out double, out double, out double, out double, out double, out double)
- Updated2025-04-08
- 2 minute(s) read
Fetches the chip rate error, frequency error, RMS EVM, peak EVM, Rho, RMS magnitude error, and RMS phase error of the complex chips of the corrected composite signal for a carrier in the ModAcc measurement.
Use "carrier(n)" as the selector string to read results from this method.
Syntax
Namespace: NationalInstruments.RFmx.WcdmaMX
public int FetchEvm(string selectorString, double timeout, out double rmsEvm, out double peakEvm, out double rho, out double frequencyError, out double chipRateError, out double rmsMagnitudeError, out double rmsPhaseError)
Parameters
| Name | Type | Description |
|---|---|---|
| selectorString | string | Specifies a selector string comprising of the result name, and carrier number. If you do not specify the result name, the default result instance is used. Example: |
| timeout | double | Specifies the time for which the method waits for the measurement to complete. This value is expressed in seconds. A value of -1 specifies that the method waits until the measurement is complete. |
| rmsEvm | out double | Upon return, contains the RMS EVM of the composite signal for a carrier. This value is expressed as a percentage. |
| peakEvm | out double | Upon return, contains the peak EVM of the composite signal for a carrier. This value is expressed as a percentage. |
| rho | out double | Upon return, contains the correlation of the received signal with the reference signal normalized by the signal power for a carrier. |
| frequencyError | out double | Upon return, contains the frequency offset of the composite signal for a carrier. This value is expressed in Hz. |
| chipRateError | out double | Upon return, contains the chip rate error of the composite signal for a carrier. This value is expressed in ppm. |
| rmsMagnitudeError | out double | Upon return, contains the RMS magnitude error of the composite signal for a carrier. This value is expressed in percentage. |
| rmsPhaseError | out double | Upon return, contains the RMS phase error of the composite signal for a carrier. This value is expressed in degrees. |
Returns
Returns the status code of this method. The status code either indicates success or describes a warning condition.