Embedded Toolbox: Debugging EMI Emissions in Frequency and Time with Rohde & Schwarz' RTO2000 'Scope

Your design is complete, you have a prototype, and one of the last boxes to check is EMI emissions testing. You drop it off at a test house and then about a week later you get the call – the device failed.

Now what? Your team just sunk thousands of dollars on testing, and now you’re faced with the additional time and cost of getting the system into compliance.

It’s time to pull out the ‘scope.

Rich Markley, Product Manager for Oscilloscopes at Rohde & Schwarz, walks us through a scenario where you didn’t pass EMI emissions testing. Using the company’s RTO2000 Series Oscilloscope and a suite of near-field probes, he’s able to detect components – and even traces – that are generating unwanted emissions in just a matter of minutes.

But more importantly, the flexibility of this test setup allows you to easily correlate events from the frequency domain into time domain so that you can pinpoint exactly what processes are generating the excess noise.

Tune in to this week’s Embedded Toolbox and watch as we get trigger happy with the scope.

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