Preventing Electromagnetic Interference to cDAQ Chassis

Updated Feb 11, 2019

Reported In

Hardware

  • cDAQ-9178

Issue Details

I have a cDAQ system that is part of a high voltage system (up to 6kV).  As we are approaching the upper limits of the system, the cDAQ loses power briefly and "drops out".  How can we prevent interference on the power input to the cDAQ chassis.?

Solution

Some steps you can take to mitigate the interference to the cDAQ chassis are as follows:
  • Add a ferrite bobbin around the USB cable
  • Add a common-mode-choke to the DC input power to the cDAQ
  • Add a radio frequency interference (RFI) shield between the chassis and the source of the interference

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