Changes the amplitude of a signal by scaling or mapping the signal.


icon

Dialog Box Options

Option Description
Scaling or Mapping Type Contains the following options:
  • Normalize—

    Determines the scale and offset necessary to transform the signal so that its maximum is Highest peak and its minimum is Lowest peak.

    • Lowest peak—

      Specifies the minimum value used to normalize the signal. The default is 0.

    • Highest peak—

      Specifies the maximum value used to normalize the signal. The default is 1.

  • Linear (Y=mX+b)—

    Sets the scale mapping mode to be linear, which scales the signal based on a straight line.

    • Slope (m)—

      Slope used for Linear (Y=mX+b) scaling. The default is 1.

    • Y intercept (b)—

      Intercept used for Linear (Y=mX+b) scaling. The default is 0.

  • Logarithmic—

    Sets the scale mapping mode to be logarithmic, which scales the signal based on a decibel reference.

    LabVIEW scales the signal using the following equation: y = 20log10(x/db reference)

    • db reference—

      Reference for the Logarithmic scaling. The default is 1.

  • Interpolated—

    Scales the signals based on a table of values that are interpolated linearly onto a scaling factor.

    • Define Table—

      Displays the Define Signal dialog box, which you use to define a table of values for Interpolated scaling.

Inputs/Outputs

  • cexpdynwdt.png Signals —

    Contains the input signal or signals.

  • cerrcodeclst.png error in (no error) —

    Describes error conditions that occur before this node runs.

  • ierrcodeclst.png error out —

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

  • iexpdynwdt.png Scaled Signals —

    Returns the scaled signals.

    • Examples

    Refer to the following example files included with LabVIEW.

    • labview\examples\Express VIs\Express VI - Scaling and Mapping.vi