Noise When Using Video Display Driver and LabVIEW Real-Time 8.5 Primary Software: LabVIEW Modules>>Real-Time ModulePrimary Software Version: 8.5 Primary Software Fixed Version: N/A Secondary Software: Driver Software>>NI-IMAQ
Problem: Why do I see random pixel noise on the op lines of the graphics display when I do a video out with LabVIEW Real-Time 8.5 and the video display driver? Solution: When a system boots up, by default LabVIEW Real-Time 8.5 displays the CPU load information, which includes all the CPUs and their respective loads. If the user seizes control of the display and starts displaying graphics, then Real-Time will continue to attempt to display the CPU load information in the video frame buffer. The result is random pixel noise in the top few lines of the graphics display.
In order to correct this issue, the CPU load information must be disabled by adding the following token to the ni-rt.ini file: [lvrt] This modification can be made by doing a FTP into the Real-Time target and transferring the ini file onto the host. Once the token has been added, simply FTP the file back onto the Real-Time target. Related Links: Attachments:  pixelnoise2.JPG
Report Date: 10/04/2007 Last Updated: 10/27/2007 Document ID: 4E3GDPDT |
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