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Resample (Constant to Constant » Continuous) (G Dataflow)

Version:
    Last Modified: January 9, 2017

    Resamples a signal according to a specific delay and sampling interval.

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    reset

    A Boolean that specifies the initialization of the internal state of the node.

    True Initializes the internal state to zero.
    False Initializes the internal state to the final state from the previous call of this node.

    This node automatically initializes the internal state to zero on the first call and runs continuously until this input is True.

    Default: False

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    signal

    The input signal.

    This input supports the following data types:

    • Waveform
    • Array of waveforms
    • 1D array of double-precision, floating-point numbers
    • 2D array of double-precision, floating-point numbers
    • 1D array of complex double-precision, floating-point numbers
    • 2D array of complex double-precision, floating-point numbers
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    resampled dt

    The sampling interval, in seconds, between data points in the resampled signal.

    Default: 1

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    resampled t0

    Start time value for the resampled signal.

    This input is available only if you wire a waveform or an array of waveforms to signal.

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    delay

    Timestamp for resampled signal.

    This input is available only if you wire a 1D or 2D array of double-precision, floating-point numbers to signal.

    Default: 0

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    interpolation mode

    Algorithm this node uses to resample the input signal.

    This input is available only if you wire a waveform or an array of waveforms to signal.

    Name Value Description
    coerce 0 This node sets each output sample value to the input sample value that is closest to it in time.
    linear 1 This node sets each output sample value to the linear interpolation between the two input samples that are closest to it in time.
    spline 2 This node uses the spline interpolation algorithm to compute the resampled values.
    FIR filter 3 This node uses a finite impulse response (FIR) filtering algorithm to compute the resampled values.

    Default: linear

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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.

    Default: No error

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    FIR filter specifications

    Minimum values this node needs to define the FIR filter.

    This input is valid only when you set interpolation mode to FIR filter.

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    alias rejection (dB)

    Minimum attenuation level of signal components aliased after any resampling operation.

    If alias rejection (dB) is less than 48, this node uses 48 instead.

    Default: 120

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    normalized bandwidth

    Fraction of the new sampling rate that is not attenuated.

    Default: 0.4536

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    anti-aliasing

    A Boolean that determines whether the input signal undergoes lowpass filtering when this node downsamples the signal.

    True This node protects the resampled signal from aliasing. The computation requirements increase during resampling.
    False The input signal undergoes lowpass filtering when this node downsamples the signal.

    This input is available only if you wire a 1D or 2D array of double-precision, floating-point numbers to signal.

    Default: True

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    resampled signal

    Resampled signal.

    This output can return the following data types:

    • Waveform
    • Array of waveforms
    • 1D array of double-precision, floating-point numbers
    • 2D array of double-precision, floating-point numbers
    • 1D array of complex double-precision, floating-point numbers
    • 2D array of complex double-precision, floating-point numbers
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    used t0

    Actual start time of the resampled signal.

    This output is available only if you wire a waveform or an array of waveforms to signal.

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    next t0

    Start time of the next resampled signal.

    This output is available only if you wire a waveform or an array of waveforms to signal.

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    t0

    Time instance for the first sample in the resampled signal.

    This output is available only if you wire a 1D or 2D array of double-precision, floating-point numbers to signal.

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    error out

    Error information. The node produces this output according to standard error behavior.

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    t0 adjusted warning?

    A Boolean that indicates whether the actual start time of the resampled signal equals the start time value you specified.

    True The actual start time of the resampled signal does not equal the start time value you specified.
    False The actual start time of the resampled signal equals the start time value you specified.

    This output is available only if you wire a waveform or an array of waveforms to signal.

    Where This Node Can Run:

    Desktop OS: Windows

    FPGA: Not supported


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