Fetches I/Q data from multiple records in an acquisition.

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

  • cu16.png timestamp type —

    timestamp type specifies the time format of the data output. The default value is Relative.

    Relative 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.
    Absolute The timestamp corresponds to the date and time of the acquisition of the first sample returned.
    Note The value of the absolute timestamp returned is always 0 for the PXIe-5644/5645/5646, PXIe-5668, and PXIe-5820/5830/5831/5832/5840/5841/5842/5860. The value of the relative timestamp returned is always 0 for the PXIe-5644/5645/5646 and PXIe-5820/5830/5831/5832/5840/5841/5842/5860.
  • ci64.png number of records (-1) —

    number of records specifies the number of records to fetch. A value of -1 specifies that NI-RFSA fetches all records in an acquisition. Record numbers are zero-based. The default value is -1.

    If starting record is set to a value greater than 0, setting number of records to –1 returns an error. If you set starting record to a value greater than 0, set number of records to the exact number of records to fetch.

    Note If you set number of records to 0, this VI returns an error.
  • ci64.png starting record —

    starting record specifies the first record to retrieve. Record numbers are zero-based. The default value is 0.

  • 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.

  • ci64.png samples to read (-1) —

    samples to read specifies the number of samples to fetch. A value of -1 specifies that NI-RFSA fetches all samples. The default value is -1.

    Note Setting samples to read to –1 fetches all remaining samples currently available depending on the Fetch Relative To property and the Fetch Offset property settings.
  • cdbl.png timeout (10 sec) —

    timeout specifies the time, in seconds, allotted for the VI to complete before returning a timeout error for the PXI-5661, PXIe-5663/5665/5667. Specifies the time, in seconds, allotted to receive the reference trigger for the PXIe-5644/5645/5646, PXIe-5668, and PXIe-5820/5830/5831/5832/5840/5841/5842/5860.

    Note A value of -1 specifies that the VI waits until all data is available. A value of 0 specifies the VI immediately returns available data. The default value is 10.
  • 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.

  • i1dmsdt.png data —

    data returns the acquired waveform.

  • ierrcodeclst.png error out —

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