Changing the Value of the NI ELVIS Variable Power Supply Express VI Temporarily Sets Output to Zero Primary Software: Driver Software>>NI ELVIS Driver VIsPrimary Software Version: 2.1 Primary Software Fixed Version: N/A Secondary Software: N/A Hardware: Multifunction DAQ (MIO)>>Connector Blocks>>NI ELVIS
Problem: I am using the NI ELVIS Variable Power Supply (VPS) VI in LabVIEW with a control to update the output voltage. I run the VI initially and the voltage updates correctly, but the output drops to 0V before updating to the set voltage for all subsequent runs. Is there some way to make the voltage update immediately? Solution: When the VPS changes voltages, the default behavior is to initially reset the output. To keep the VI from resetting the voltage before updating the voltage, run the VI in a While Loop with the stop condition of the loop wired to the stop terminal of the VPS, as shown below.
Related Links: KnowledgeBase 3X0ABPX6: Initial High Frequency Waveform When Using the NI-ELVIS Function Generator Express VI KnowledgeBase 3X4DF8X6: Writing to a High Digital Line with the ELVIS Digital Writer Express VI Causes Glitch Attachments: 
Report Date: 05/05/2006 Last Updated: 05/12/2006 Document ID: 3X49ETX6 |
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