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Real-Time Measurement and Control

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sbRIO-9607 revision history and grounding

Are there any hardware revision change sets, or other documentation, published by NI, that provide board assembly or board revision details?  We use the FPGA on the 9607 for a frequency measurement application and I'm noticing serious performance issues with recent controllers.  We've taken pretty serious pains to isolate our logic DC power from our field power, but it seems as if there is some type of circuit connection being made through the RIO now; the only thing that seems to alleviate the symptoms is taking extra ground measures via the 4-40 screw on RIO bracket adjacent to the USB connector.

 

Thanks in advance for any replies...

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