| Data Acquisition Toolbox™ | |
You use UnitsRange to scale your data to reflect particular engineering units.
For analog input objects, the data is scaled while it is extracted from the engine with the getdata function according to the formula
scaled value = (A/D value)(units range)/(sensor range)
The A/D value is constrained by the InputRange property, which reflects the gain and polarity of your analog input channels. The sensor range is given by the SensorRange property, which reflects the range of data you expect from your sensor.
For analog output objects, the data is scaled when it is queued in the engine with the putdata function according to the formula
scaled value = (original value)(output range)/(units range)
The output range is constrained by the OutputRange property, which specifies the gain and polarity of your analog output channels.
For both objects, you can also use the Units property to associate a meaningful label with your data.
Usage | AI, AO, per channel |
Access | Read/write |
Data type | Two-element vector of doubles |
Read-only when running | No |
The default value is determined by the default value of the InputRange or the OutputRange property.
InputRange, OutputRange, SensorRange, Units
| Units | UserData | |
| © 1984-2008- The MathWorks, Inc. - Site Help - Patents - Trademarks - Privacy Policy - Preventing Piracy - RSS |