Scaling a Channel on Hardware Devices

Create scales to convert hardware channel unit measurements to transducer/actuator scaled units.

Before you begin, you might need to scale a channel when using a sensor that requires scaling from its voltage or current output into engineering units. Use your sensor's documentation for more information on creating a scale.
For input channels, scales convert read samples from the hardware channel to scaled units. Scales on output channels convert written samples to pre-scaled units of the channel.
  1. Depending on your goal, complete one of the following tasks.
    Goal Task
    Create a lookup table scale. Map an array of pre-scaled values to an array of corresponding scaled values.
    Create a polynomial scale. Convert values using a polynomial equation with up to ten coefficients.
    Create a thermocouple scale. Convert values to Kelvins or degrees Celsius, Fahrenheit, or Rankine.
    Import scales from another application. Import a scale created by another system definition file (.nivssdf) or NI-DAQmx.
    Import scale values from a text file. Import scale table values or coefficients from a text file.
  2. Map the scale to the channel.