niVMS Analyse CVBS VI
- Updated2023-08-17
- 8 minute(s) read
niVMS Analyse CVBS VI
Performs a composite video analysis of the specified line(s) to produce the selected measurements. Each type of measurement yields several video parameters that are displayed in the Results array (including name, value, and units). A graph of a relevant output waveform is displayed for most measurements and can be used for signal and measurement verification.
IMPORTANT NOTES:
- Before running this VI, ensure that desired video standard is configured, that video lines containing the appropriate test patterns have been acquired, and that the line selection made here matches accordingly. Failure to do this results in invalid measurements or a run-time error.
- Many measurements require previous measurement of the bar amplitude for use as an amplitude reference. Therefore NI recommends that the bar line time measurement should be performed before any others.
- Certain measurements require additional configuration settings that affect the outcome of the results (e.g., chroma nonlinearity, luminance noise, level meter, and vertical blanking).
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Measurement Type specifies the composite
measurement to be
performed.
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Line Selection specifies the channel and
block of lines to be analyzed in each stored frame.
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Meter Configuration contains
configuration settings for the level meter
measurement.
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Additional Configuration contains
configuration settings for miscellaneous
measurements.
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Bounce Configuration contains the
configuration settings for the bounce measurement.
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Noise Configuration contains the
configuration settings for the noise spectrum
measurement.
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Edge Settings contains settings for the
Edge Finder measurement tool.
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Multiburst Configuration contains
configuration settings for the multiburst
measurement.
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Error In describes error conditions that occur before this node runs. This input provides standard error in functionality. | ||||||||||||||||||||
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Results returns an array of clusters containing the name (string), value (DBL), and units (string) for each result parameter. | ||||||||||||||||||||
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Averaging contains information about how
much averaging was applied during the measurement.
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Measurement Info contains general
information about the measurement and how it was
performed.
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Waveforms contains measured waveforms relating to the measurement performed. It may be empty, or may contain one or more waveforms that illustrate certain features of the measured signal or outputs from the measurement itself. | ||||||||||||||||||||
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Error Out contains error information. This output provides standard error out functionality. |