Table Of Contents

Get Actual Record Length (G Dataflow)

Version:
    Last Modified: March 3, 2017

    Returns the actual number of points the digitizer acquires for each channel.

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    session in

    Identifies a particular instrument session.

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    error in

    Error conditions that occur before this node runs.

    The node responds to this input according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Default: No error

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    session out

    Passes the instrument handle to the next node in the program. This parameter has the same value as session in.

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    actual record length

    Returns the actual number of points the digitizer acquires for each channel.

    NI-SCOPE returns the value held in the Horizontal Actual Record Length property.

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    error out

    Error information.

    The node produces this output according to standard error behavior.

    Standard Error Behavior

    Many nodes provide an error in input and an error out output so that the node can respond to and communicate errors that occur while code is running. The value of error in specifies whether an error occurred before the node runs. Most nodes respond to values of error in in a standard, predictable way.

    error in does not contain an error error in contains an error
    If no error occurred before the node runs, the node begins execution normally.

    If no error occurs while the node runs, it returns no error. If an error does occur while the node runs, it returns that error information as error out.

    If an error occurred before the node runs, the node does not execute. Instead, it returns the error in value as error out.

    Determining Waveform Size

    After configuring the digitizer for an acquisition, call this node to determine the size of the waveforms that the digitizer acquires. The value is equal to or greater than the minimum number of points specified in Configure Horizontal Timing.

    Using with Read and Fetch

    Use the value returned by actual record length as the input to numSamples of Read and Fetch.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported


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