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Use this tab to set rules for checking to make sure that sensors are returning valid data. You can review data validation errors on the Notifications page.
|Enable data validation rule options.||Place a checkmark in the Data Validation checkbox.|
|Set a rule to check that waveform values are within a specified range.||Place a checkmark in the Range Check checkbox and use the Maximum EU and Minimum EU fields to specify a range of acceptable values. More information about this property.|
|Set a rule to check that consecutive waveform values do not remain the same for more than the specified number of samples.||Place a checkmark in the N Rule checkbox and use the Maximum Samples field to specify the maximum number of consecutive samples for which waveform values can remain the same.|
|Set a rule to check that consecutive waveform values do not have the same sign for more than a specified amount of time.||Place a checkmark in the Z Rule checkbox and use the Maximum Time field to specify the maximum amount of time that consecutive waveform values can have the same sign.|
|Set a rule to ensure that all waveforms have a minimum percentage of unique values.||Place a checkmark in the U Rule checkbox and use the Minimum Percent field to specify the minimum percentage of unique values for a given waveform.|
|Set a rule to check that the ratio of the Peak feature to the Peak-Peak feature is within the range you specify.||Place a checkmark in the Pk/Pk-Pk checkbox and use the Minimum Ratio and Maximum Ratio fields to specify a range of acceptable peak ratio values.|
|Set a rule to check for a suspect amount of energy at line frequency.||Place a checkmark in the Line Noise checkbox and use the Line Frequency field to specify the line frequency.
|Set a rule to check for waveforms with low RMS levels.||Place a checkmark in the Low Signal checkbox and use the Maximum RMS field to specify the highest acceptable RMS value.|
|Set a rule to check for a suspect amount of low frequency energy.||Place a checkmark in the Ski Slope checkbox.|
The Range Check: Minimum and Range Check: Maximum properties are the minimum and maximum values you expect to measure after any scaling. These values are sometimes confused with the Input Range property. Input Range refers only to the input range of a particular device, in the pre-scaled units in which the device measures. For example, the Input Range for a module might be 0 to 10 V, but that module might be used with a temperature sensor that outputs 100 mV for every 1 °C. The Range Check: Minimum and Range Check: Maximum in that case could be 0 to 100 V, with 10 V corresponding to 100 °C.
In this example, you could set the Custom Scale: Slope property to 0.01 to implement the conversion from V to °C.