I have a NI USB 6211 card and two NI PCI 6071E cards go bad back to back in a span of a week.
I wish to know what could be the reasons and how to prevent cards from going bad. I have NI6008 USB card and NI6321 cards for further use, but do not want to start using them only to see them go bad too. Can someone help me see what could be potentially wrong here in way cards are used. I am a researcher in fluid mechanics, with background in Mechanical engineering and have limited knowledge of NI software and hardware.
How I use the cards?
I use the cards in Analog input mode, to measure voltages from a Honeywell Board mount pressure sensor, which is powered by a +5V DC power supply. The PC has Intel Core-i7 3820 CPU, along with a simple display card whose fan is right above the NI PCI card.
State of the cards now:
How it went bad:
What could have made the cards go bad?
I wish to know, what could have been the reason for the cards to go bad.
This sounds like something that you could look at in more depth with a member of our Technical Support Engineering team. If you go to this link below and select "Return hardware for repair," you can create a Service Request and work to diagnose those failures, and then make a decision about potentially sending those in to get repaired or replaced.
Open a New Service Request
That channel is most likely better suited for helping troubleshoot this kind of problem, as they will be able to work with you in a more dedicated way.
If you connected a 5V battery directly to AI port without any resistors in the circuit, too much current may flow into the DAQ device, which would burn the IC. You are only supposed to supply a few mA of current into a DAQ device.