Test & Measurement

Using Acoustic Beamforming for Pass-By Noise Source Detection

This application note discusses a technique known as beamforming for determining noise location of passing vehicles. The technique has several challenges including simultaneous acquisition of a large sensor array, advanced signal processing and storage of extremely large data sets, and the environmental considerations required for operating outdoors on a test track. This application note recommends best practices for performing beamforming and walks through the complete system required from the test environment to the sensors to the math, analysis, and data storage with the goal of the reader being able to apply the technique.

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Implementation of Real-time Spectrum Analysis

The keys to real-time spectrum analysis are to provide parallel sampling and FFT calculations so the data acquisition continues while the FFT’s are performed, and to provide fast enough DSP processing of FFT algorithms to keep up with the sample rate at the input. This white paper discusses the technical implementation of the real-time process in the Rohde & Schwarz real-time analyzers, and the applications for use of this analysis capability in the troubleshooting and test of modern designs.

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Oscilloscope Fundamentals

The oscilloscope is arguably one of the most useful tools ever created for use by electronic engineers. In the more than five decades since the modern analog oscilloscope was created, hundreds of useful documents and thousands of articles have been written about what it is, how it works, how to use it, and application-specific examples of the “oscilloscope” in action. It is the purpose of this primer to instead describe digital oscilloscopes, which have for practical purposes replaced their analog predecessors in the vast majority of applications. Covered here is a short description of the oscilloscope’s origins, its transition from analog to digital, types of digital oscilloscopes and their major subsystems, key benchmark specifications, and measurements.

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Troubleshooting EMI in Embedded Designs

Today, engineers need reliable data fast, and to ensure compliance with regulations for electromagnetic compatibility in the most economical way, appropriate measures must be taken early in the design phase. This paper provides a brief introduction to embedded EMI troubleshooting challenges and how to use a digital oscilloscope to debug the two key culprits of EMI – switching power supplies and power amplifiers. The Rohde & Schwarz R&S®RTO series oscilloscope provides time correlated multi-domain analysis often required to troubleshoot the complex time and frequency domain embedded design challenges.

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White Papers

Managing Risk in Medical Connectors
Sponsored by Fischer Connectors
A New Paradigm for Mid-Lifecycle Design Changes
Sponsored by Sparton
Force and Torque Measurement Traceability
Sponsored by Morehouse
Are you tired of maintaining UPS Systems?
Sponsored by Falcon
Flexible, High-Resolution Position/Displacement for OEM Applications
Sponsored by Kaman
How Lean Manufacturing Adds Value to PCB Production
Sponsored by Sunstone Circuits

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