Appendix C Common QuestionsVXI-MIO Series User ManualC-2 National Instruments Corporation3. What type of 5 V protection do the VXI-MIO Series moduleshave?The VXI-MIO Series modules have 5 V lines equipped with aself-resetting 1 A fuse.Installation and Configuration4. What jumpers should I be aware of when configuring myVXI-MIO Series module?Refer to the Module Configuration section of Chapter 2,Installation and Configuration, for this information.5. Which National Instruments document should I read first to getstarted using DAQ software?The release notes document for your application or driver softwareis always the best starting place.6. What version of NI-DAQ must I have to program myVXI-MIO Series module?You must have NI-DAQ version 4.9.0 or higher for theVXI-MIO-64E-1 or VXI-MIO-64XE-10 modules.7. What is the best way to test my module without having to programthe module?The NI-DAQ Configuration Utility (formerly WDAQCONF) has aTest menu with some excellent tools for doing simple functionaltests of the module, such as analog input and output, digital I/O,and counter/timer tests. Also, the Test Configuration option willverify that the logical address and interrupt settings for the moduleare functioning properly.Analog Input and Output8. I’m using my module in differential analog input mode and I haveconnected a differential input signal, but my readings are randomand drift rapidly. What’s wrong?Check your ground reference connections. Your signal may bereferenced to a level that is considered floating with reference tothe module ground reference. Even if you are in differential mode,the signal must still be referenced to the same ground level as themodule reference. There are various methods of achieving this
