Table Of Contents

Amplitude Measurements (Pulse Amplitude and State Levels) (G Dataflow)

Version:
    Last Modified: March 30, 2017

    Returns the amplitude, high state level, and low state level of a signal.

    connector_pane_image
    datatype_icon

    signal

    The input signal.

    This input can be a waveform or an array of waveforms.

    datatype_icon

    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

    datatype_icon

    state levels settings

    Settings that determine the high and low state levels of a waveform.

    datatype_icon

    method

    Method this node uses to compute the high and low state levels of the waveform.

    Name Description
    histogram Returns the levels of the histogram bins with the maximum number of hits in the upper and lower regions of the waveform. The upper and lower regions of the waveform include the upper and lower 40%, respectively, of the peak-to-peak range of the waveform.
    peak Searches the entire waveform for its maximum and minimum levels.
    auto select Determines whether the histogram bins that correspond to the high and low state levels each have over 5% of the total hits. If so, this node returns those results. Otherwise, this node uses the peak method. This ensures a reasonable answer for either a square wave (ignoring the overshoot and undershoot) or a triangle wave (where a histogram fails).

    Default: auto select

    datatype_icon

    histogram size

    Number of bins in the histogram this node uses to determine the high and low state levels of the waveform.

    If you select the peak method, this node ignores this input.

    Default: 256

    datatype_icon

    histogram method

    Method this node uses to compute the histogram. Currently, mode is the only available histogram method.

    Name Description
    mode Uses the mode method.
    datatype_icon

    reserved

    Value reserved for future use.

    datatype_icon

    amplitude

    Difference between high state level and low state level.

    This output can return a double-precision, floating-point number or a 1D array of double-precision, floating-point numbers.

    datatype_icon

    high state level

    Level at which a pulse or transition waveform is defined to be in its highest state.

    This output can return a double-precision, floating-point number or a 1D array of double-precision, floating-point numbers.

    datatype_icon

    low state level

    Level at which a pulse or transition waveform is defined to be in its lowest state.

    This output can return a double-precision, floating-point number or a 1D array of double-precision, floating-point numbers.

    datatype_icon

    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.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: This product does not support FPGA devices


    Recently Viewed Topics