Owning Palette: Waveform Measurements VIs
Requires: Full Development System. This topic might not match its corresponding palette in LabVIEW depending on your operating system, licensed product(s), and target.
Use the Waveform Monitoring VIs to analyze the waveforms for trigger points, to search for peaks, and to perform limit mask testing.
| Note The VIs on this palette return an error if an input waveform has a dt less than or equal to zero. |
| Note The Waveform Monitoring VIs presently do not accept waveforms that contain complex data. |
The VIs on this palette can return waveform error codes.
| Palette Object | Description |
|---|---|
| Basic Level Trigger Detection | Finds the first level-crossing location in a waveform. You can retrieve the trigger location as an index or as a time. The trigger conditions are specified in terms of threshold level, slope, and hysteresis. Wire data to the signal in input to determine the polymorphic instance to use or manually select the instance.
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| Limit Specification | Creates continuous or segmented masks in the time domain or in the frequency domain. You can use different instances of this VI to create multiple limits. Wire data to the Specification Cluster input to determine the polymorphic instance to use or manually select the instance.
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| Limit Specification By Formula | Creates a continuous or segmented mask in the time domain or in the frequency domain. You can use different instances of this VI to create multiple limits. Wire data to the Specification Cluster input to determine the polymorphic instance to use or manually select the instance.
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| Limit Testing | Performs limit testing on waveform or cluster input data. The VI compares signal in with upper limit and lower limit and ignores any limit input that is not wired. You can wire output values to a graph to view the limits, signal, and failures. Wire data to the signal in input to determine the polymorphic instance to use or manually select the instance.
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| Mask and Limit Testing | Performs limit testing on Signals. |
| Trigger and Gate | Uses triggering to extract a segment out of a signal. The trigger conditions can be based on a start or stop trigger threshold or can be static. When a trigger condition is static, the trigger occurs immediately and this Express VI returns a predefined number of samples. |
| Waveform Peak Detection | Finds the locations, amplitudes, and second derivatives of peaks and valleys in Signal In. Wire data to the Signal In input to determine the polymorphic instance to use or manually select the instance.
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