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Crosstalk analysis application for real-time oscilloscopes

Posted: 22 Jan 2016 ?? ?Print Version ?Bookmark and Share

Keywords:Keysight Technologies? oscilloscope? crosstalk analysis?

Keysight Technologies Inc. has introduced what it describes as the most comprehensive N8833A and N8833B crosstalk analysis application to aid in the diagnosis of crosstalk. According to the company, the application not only detects and quantifies the presence of crosstalk, but it can determine which aggressors are primarily responsible.

Furthermore, the application can go one step further by actually removing the crosstalk from the victim waveform so engineers can visually compare the original waveform with the clean waveform side-by-side. Engineers can also compare the results from other scope analysis tools, such as real-time eye diagrams or jitter analysis. This gives engineers a direct way of quantifying the amount of improvement they can expect by mitigating the different sources of crosstalk.

The crosstalk analysis application can provide a lot of valuable insight into the design. For instance, it can help engineers determine the margins the design would recover without the crosstalk. It can also help determine if a signal that fails design specification can pass without the crosstalk. This can lead to important design decisions such as whether or not it is worth spending the time and effort to improve the crosstalk effect or where in the design to improve.

Crosstalk analysis application GUI

Crosstalk analysis application GUI

The need for increased speeds in data communications systems has led to higher data rates and parallel data lanes, which are necessarily placed closer together. The combination of higher bit rates and tightly-spaced lines leads to an increased amount of crosstalk. As a result, crosstalk is becoming a more important problem to diagnose. Power supplies are also an important component. They can create interference on the data lanes they drive in the form of noise and jitter, and they themselves can be susceptible to data-dependent noise such as simultaneous switching noise, which leads to ground bounce.

N8833A crosstalk analysis application

N8833A crosstalk analysis application


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