NI 5431 Composite Video Generator
VDG_SetRGB48LineData
This advanced VI is used to insert an RGB test signal into the active part of a specified video line. The data correspond to the test signal sampled at the rate returned by the attribute Sampling frequency (MHz). The length of each array should correspond to the active part of the video line (value returned by the attribute Image duration (us)), so the number of elements in each array should be as follows:
Size = Round [Sampling frequency (MHz) × Image duration (us)]
| Default sizes: | M-NTSC = 1044
B-PAL = 1040 M-PAL = 1042 |
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Note The scaling of the input RGB data is controlled by the 2 attributes Input gain (default = 100 IRE/65536) and Input offset (default = 0). By default, input value 0 corresponds to the setup level (black level), while 65535 corresponds to 100 IRE (white level). |
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Line number specifies the video line where the insertion test signal data is to be inserted. |
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Red inputs the insertion test signal data for the red channel to the video line defined by the Line number control. |
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Green inputs the insertion test signal data for the green channel to the video line defined by the Line number control. |
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Blue inputs the insertion test signal data for the blue channel to the video line defined by the Line number control. |
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error in is a cluster that describes the error status before this VI executes. If error in indicates that an error occurred before this VI was called, this VI may choose not to execute its function, but just pass the error through to its error out cluster. If no error has occurred, then this VI executes normally and sets its own corresponding error message. Using error in and error out clusters is a convenient way to check errors and to specify execution order by wiring the error output from one subVI to the error input of the next. |
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error out is a cluster that describes the error status after this VI executes. If an error occurred before this VI was called, error out is the same as error in. Otherwise, error out shows the error, if any, that occurred in this VI. Use the error handler VIs to look up the error code and to display the corresponding error message. Using error in and error out clusters is a convenient way to check errors and to specify execution order by wiring the error output from one subVI to the error input of the next. |