Methods of protection for NI USB-6009

Hello

I developed a tester to measure 8 outputs varies between 1-5 V to a power supply Board. But suddenly the meter 6009 got damaged since the problems with rectifier circuits of UUT that caused the volt of entry (230 v AC) to reach the limits of measurement.

Could someone help me to design/introduce certain protection measures between USE and DAQ unit to avoid happening again?

It would be really helpful for me if I can solve this problem before the transfer of the tester at the end of production.

Thank you.

The USB-6009 is supposed to be a bottom of the line test solution and is not really designed for quality of production systems. As you have discovered, it doesn't have its own internal protection products OR more expensive. I used it before production systems and I killed one like you did it (a week before delivery, no less).

My only advice is to make sure that all of your grounds are connected and your system is melted, but there is not a lot you can do other than that. Maybe an EE here can provide more wisdom.

Tags: NI Software

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