Table Of Contents

Pattern Generator (Pulse) (G Dataflow)

Version:
    Last Modified: March 15, 2017

    Generates a signal containing a pulse pattern.

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    amplitude

    Amplitude of the pattern.

    Default: 1

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    delay

    Shifts the starting point of the pattern in the time axis. This input must be greater than or equal to 0.

    Default: 0

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    width

    Width of the pattern. This input must be greater than or equal to 0.

    Default: 1

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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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    dt

    Sampling rate in samples per second.

    This input is available only if you configure this node to return a waveform.

    Default: 0.1

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    samples

    Number of samples in the pattern. This input must be greater than or equal to delay + width. If this input is less than 0, this node sets the output pattern to an empty array and returns an error.

    Default: 128

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    t0

    Timestamp of the output signal. If this input is unwired, this node uses the current time as the timestamp of the output signal.

    This input is available only if you configure this node to return a waveform.

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    pulse pattern

    Output pulse pattern. The largest pulse pattern this node can generate depends on the amount of memory in your system, and it is theoretically limited to 2,147,483,647 (231 - 1) elements.

    This output can return a waveform or an array of double-precision, floating-point numbers.

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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.

    Algorithm for Generating the Pulse Pattern

    If the sequence X represents pulse pattern, this node generates the pattern according to the following equation:

    x i = { a if d i < ( d + w ) 0 elsewhere

    for i = 0 , 1 , 2 , ... , n 1

    where

    • a is amplitude
    • d is delay
    • w is width
    • n is samples

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: This product does not support FPGA devices


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