RFmxTdscdmaMXAcpMeasurementMethod Enumeration

RFmx TD-SCDMA 19.1 Help

Edition Date: October 2019

Part Number: 375493H-01

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Specifies the method for performing the ACP measurement.

Namespace: NationalInstruments.RFmx.TdscdmaMX

Assembly: NationalInstruments.RFmx.TdscdmaMX.Fx40 (in NationalInstruments.RFmx.TdscdmaMX.Fx40.dll) Version: (


Visual Basic (Declaration)
Public Enumeration RFmxTdscdmaMXAcpMeasurementMethod

public enum RFmxTdscdmaMXAcpMeasurementMethod


Member nameDescription
DynamicRangeThe ACP measurement acquires the spectrum using the hardware-specific optimizations for different frequency bands. Use this method to get the best dynamic range. Supported Devices: PXIe-5665/5668R.
NormalThe ACP measurement acquires the spectrum using the same signal analyzer setting across frequency bands. Use this method when a higher measurement speed is desirable over a higher dynamic range.
SequentialFftThe ACP measurement acquires I/Q samples for a duration specified by the NationalInstruments.RFmx.TdscdmaMX.RFmxTdscdmaMXAcpConfiguration.SetSweepTimeInterval method. These samples are divided into smaller chunks defined by the NationalInstruments.RFmx.TdscdmaMX.RFmxTdscdmaMXAcpConfiguration.SetSequentialFftSize method, and FFT is computed on each of these chunks. The resultant FFTs are averaged to get the spectrum and is used to compute ACP. If the total acquired samples is not an integer multiple of the FFT size, the remaining samples at the end of acquisition are not used for the measurement. Use this method to optimize ACP measurement speed. Accuracy of the results may be reduced when using this measurement method.

The following methods have limited support when you set the RFmxTdscdmaMXAcpConfiguration.ConfigureMeasurementMethod method to SequentialFft.

  • The RFmxTdscdmaMXAcpConfiguration.SetRbwFilterAutoBandwidth method will only support True value.
  • The RFmxTdscdmaMXAcpConfiguration.SetRbwFilterType method will only support FftBased value.
  • The RFmxTdscdmaMXAcpConfiguration.SetAveragingCount method will only support a value of 1.
  • The RFmxTdscdmaMXAcpConfiguration.SetNoiseCompensationEnabled method will only support False value.
  • The RFmxTdscdmaMXAcpConfiguration.SetNumberOfAnalysisThreads method will only support a value of 1.

See Also


NationalInstruments.RFmx.TdscdmaMX Namespace


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