Returns the I/Q data as a complex cluster.

Supported Devices: PXIe-5644/5645/5646, PXI-5661, PXIe-5663/5663E/5665/5667/5668, PXIe-5820/5830/5831/5832/5840/5841/5842/5860


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Inputs/Outputs

  • civrn.png instrument handle —

    instrument handle identifies your instrument session. instrument handle is obtained from the niRFSA Initialize VI or the niRFSA Initialize With Options VI.

  • cdbl.png timeout (10 sec) —

    timeout specifies the time, in seconds, allotted for the VI to complete before returning a timeout error. A value of -1 specifies that the VI waits until all data is available. The default value is 10 seconds.

  • cerrcodeclst.png error in —

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

  • iivrn.png instrument handle out —

    instrument handle out passes a reference to your instrument session to the next VI. instrument handle is obtained from the niRFSA Initialize VI or the niRFSA Initialize With Options VI and identifies a particular instrument session.

  • icclst.png data —

    data returns the acquired data as a cluster.

  • idbl.png t0 —

    t0 returns the start time of the first sample returned. The timestamp corresponds to the difference in seconds between the first sample returned and the Reference Trigger location. The timestamp is zero if the Reference Trigger has not occurred.

    Note The value of t0 returned in data is always 0 for the PXIe-5644/5645/5646.
  • idbl.png dt —

    dt returns the time interval between data points in the acquired signal. The I/Q data sample rate is the reciprocal of this value.

  • i1dcdb.png Y —

    Y returns the complex-value time domain data array.

    The real and imaginary parts of this complex data array correspond to the in-phase (I) and quadrature-phase (Q) data, respectively. To calculate the instantaneous power of a sampled I/Q point, use the equation (I2 + Q2)/2R, where R is the input impedance in ohms (Ω). For vector signal analyzers, R = 50 Ω.

  • ierrcodeclst.png error out —

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