What is Crosstalk and How to Identify it With an Oscilloscope - Scopes University - (S1E9)

How to analyze crosstalk on an oscilloscope. Click to subscribe: http://bit.ly/Scopes_Sub Learn more about crosstalk ► http://bit.ly/CrosstalkApplication ◄

What is crosstalk and why do I care about it?

Crosstalk is interference on a signal from another signal. Any signal could interfere with another if a board layout is too crowded. Digital lines can disrupt power lines. Power lines can disrupt digital lines. Digital can interfere with other digital signals. If signal traces are placed too close together they can interfere with each other causing noise or errors that could lead to malfunctions of your device.

Ideally, boards are designed to follow specific spacing standards. But as designs become more complex while form factors become more compact, we stretch the boundaries of layout constraints and experiment with new ways of routing signals.

Noise and errors can be caused by many different things, but if the cause is crosstalk, there’s usually a way to fix it. The traces need to be further spaced or rerouted across the board. Unfortunately, redoing a layout and then fabricating another board can be tedious and expensive. Before you go through the trouble, wouldn’t it be nice to measure and quantify crosstalk and understand the benefit of a redesign?

Without a tool to analyze crosstalk, it can be difficult, if not impossible to understand the impact of crosstalk.

In this episode you will learn how to set up eye diagrams and use the crosstalk tool to quantify crosstalk and model the improvement in design if you were to update it to remove the effects of crosstalk.

You can check out the application I’m using at this product page: N8833A Crosstalk Analysis Application http://bit.ly/CrosstalkApplication

Tune in for future Scopes University episodes covering more oscilloscope capabilities to see how you can test more efficiently!

You can ask me questions on Instagram: @keysightoscilloscopes https://www.instagram.com/keysightoscilloscopes

Learn more about using oscilloscopes: http://oscilloscopelearningcenter.com

Check out the EEs Talk Tech electrical engineering podcast: https://eestalktech.com

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The mixed signal oscilloscope we used: http://www.keysight.com/en/pcx-x205213/infiniium-s-series-oscilloscopes?cc=US&lc=eng (The Keysight Infiniium S-Series Oscilloscope)

The S-Series allows you to see the truest representation of your signal with the industry’s best signal integrity: 10-bit ADC, low noise front end, superior time base, signal processing in hardware, and responsive de ... https://www.youtube.com/watch?v=ae4Ci6ucANk