Items Tagged with 'jitter'

This article describes a phase noise analysis tool that creates a numerical model from discrete phase noise data. The tool includes an adaptive algorithm to identify spurious deterministic components in the data while also creating a physics-based numerical model for the random noise component.

Phase-locked loops (PLL) are used extensively throughout modern electronic systems. In data communication systems, PLLs are used in transmitter clock multipliers and receiver clock recovery circuits. A key performance factor for the PLL is how they manage jitter. A critical PLL metric is the jitter transfer function which is based on the PLL loop bandwidth. There are several measurement methods that can be used to characterize PLL loop bandwidth and jitter transfer. When operating on digital data signals, PLL bandwidth can vary with the data pattern. In this article, Greg Le Cheminant, Keysight Technologies, focuses on test methods that allow operation on data rather than only clock signals provide very high precision and useful insights into PLL behavior.

In this article, Randy White discusses variations in clock timing and how this can impact the reliability of a memory system. White highlights the importance of considering probe calibration, random jitter removal, and controlling bandwidth for accurate measurements, providing examples that demonstrate why care must be taken during probe attachment, calibration, and using a jitter/noise analysis application to evaluate jitter levels, therefore ensuring memory reliability.

In a tribute to Bob Pease, David Banas explores the concept of unbounded jitter and how it aligns with the concerns of engineers and link designers. In his discussion of the definition, constituents, and practical limits of jitter, Banas embodies the simplistic approach of his hero. 

Anritsu Company demonstrates solutions, technologies, and methodologies to verify high-speed communications designs during DesignCon 2023.

In this detailed study of jitter, Vladimir Dmitriev-Zdorov considers its conversion into vertical noise and the propagation of this noise in a channel. It applies to many, if not all, linear systems. Read on to see his analysis as illustrated in both the frequency and time domains for small and large magnitude jitter.

Designers pushing the limits in their application can run into situations where the XO performance is inadequate for their next design due to the way it reacts to the noise and ripple in the power supply. To achieve optimal performance, they most likely will find they will need to do more than a simple datasheet evaluation to select their next XO. Read on for details on a PSNR test method to help select an optimal XO.

Check out this article from Mike Hertz that details specifically how The Track measurement operator on oscilloscopes can be used to identify timing issues.

Read on for a way to combine a BERT and an oscilloscope for actual-time error detection and characterization.

What are the test challenges brought on by PAM4? This article details what a BERT needs to do to meet the necessary signal analysis requirements.