Returns the composite EVM of all the channels in the ModAcc measurement.


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Inputs/Outputs

  • cstr.png Selector String —

    Selector String 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. The default value is "" (empty string).

    Examples:

    ""

    "signal::sig1"

    "result::r1"

    "signal::sig1/result::r1"

    You can use the RFmxTDSCDMA Build Signal String VI to build the selector string.

  • cgenclassrntag.png Instrument Handle In —

    Instrument Handle In specifies the RFmx session refnum. Instrument Handle In is obtained from the RFmxInstr Initialize NIRFSA VI.

  • cdbl.png Timeout (s) —

    Timeout 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 VI waits until the measurement is complete. The default value is 10.

  • cerrcodeclst.png error in (no error) —

    error in describes error conditions that occur before this node runs. This input provides standard error in functionality.

  • idbl.png Chip Rate Error (ppm) —

    Chip Rate Error returns the chip rate error. This value is expressed in ppm.

  • idbl.png Frequency Error (Hz) —

    Frequency Error returns the frequency error averaged over all measured slots. This value is expressed in Hz.

  • igenclassrntag.png Instrument Handle Out —

    Instrument Handle Out passes a reference to your RFmx session to the next VI.

  • idbl.png RMS Composite EVM (%) —

    RMS Composite EVM returns the value of the RMS of the composite EVM, averaged over all active time slots and all averaging iterations. This value is expressed as a percentage. Values close to 0 indicate a good modulation accuracy. In a loopback setup, values of approximately 0.2 to 0.4 are typical.

  • idbl.png Peak Composite EVM (%) —

    Peak Composite EVM returns the value of the peak composite EVM among all active time slots and averaging iterations. This value is expressed as a percentage.

  • idbl.png Composite Rho —

    Composite Rho returns the composite value of rho, averaged over all active time-slots and all averaging iterations. A value of 1 indicates a perfectly modulated signal. Typical values for real signals in a loopback setup are slightly below 1.000000.

  • ierrcodeclst.png error out —

    error out contains error information. This output provides standard error out functionality.

  • idbl.png RMS Composite Magnitude Error (%) —

    RMS Composite Magnitude Error returns the value of the time-slot based RMS of the composite magnitude error averaged over all active time slots and averaging iterations. This value is expressed as a percentage.

  • idbl.png RMS Composite Phase Error (deg) —

    RMS Composite Phase Error returns the time-slot based RMS of the composite phase error, averaged over all active time slots and averaging iterations. This value is expressed in degrees.