I have been working with NI hardware for about 2 years now. I have found that some of the I/O channels of USB as well as PCI based DAQs tend to blow off after a period of time. I have also blown 2 PXIs till now. I'm sure this is not a problem with NI hardware as it may turn into a quality issue then. I want to know what kind of protection can I do in my control panel to avoid this. I would be greatful if I get some checkpoints from all you experienced people out there which I can ensure while building an electrical panel for my system. Please also share your experiences with such situations and how you solved it.
I almost always use OPTO22 isolation modules for digital I/O. If you think that you have problems on the analog side, isolation modules are available, but be careful of the update rates they are capable of.
