Using USB-6525 Digital Outputs Hardware: Multifunction DAQ (MIO)>>Portable>>USB-6525
Problem: I have a USB-6525. When I use my device in Measurement & Automation Explorer (MAX), I can not measure a voltage change with my digital multimeter (DMM) when I set the line/port output to high. Why is there no measurable voltage change? Solution: The USB-6525 is a device that has 8 solid state relays (SSR) that are channel to channel isolated, and these solid state relays can open and close. In order to read a voltage change with your DMM, an external voltage source must be connected to the USB-6525. The voltage source will be connected to the input terminals of the digital outputs. After connecting the voltage source and closing the relay you will see the a voltage change with the DMM.
The input voltage is not to exceed 60 VDC. To register a logic high a voltage of 3.2V or more must be applied. To register a voltage logic low a voltage of 0-1V must be applied. However, a DC voltage between 1-3.2V may not register because this is a transition state. Related Links: KnowledgeBase 20HAS7HE: How Do the SSR Output Modules Work? NI USB-6525 User Guide and Specifications Attachments:  6525 Digital Output Setup.JPG
Report Date: 11/29/2007 Last Updated: 11/29/2007 Document ID: 4FS9NBPJ |
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