Test & Measurement

Envelope Tracking and Digital Pre-Distortion Test Solution for RF Amplifiers

The R&S®SMW200A together with the R&S®FSW is a state of the art testing solution that significantly reduces the required hardware for testing power amplifiers with envelope tracking and/or digital pre-distortion.

Posted in: Test & Measurement, White Papers

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Ultrasonic Intake Airflow Meter for Testbeds

The airflow meter measures extremely dynamic phenomena of combustion engines without being affected by ambient influences or sensor contamination. An ultrasonic intake airflow meter for engine testbed applications was developed. An automotive intake airflow meter must fulfill a series of requirements differentiating it from typical ultrasonic flow meters. First, the data sampling rate of the device must be as high as possible to be able to measure dynamic phenomena of the combustion engine. It is therefore necessary to use broadband ultrasonic transducers capable of sending short signals without post-pulse oscillations. The state-of-the-art piezoelectric transducers cannot fulfill these requirements. For this reason, the FLOWSONIX

Posted in: Physical Sciences, Test & Measurement, Briefs

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A Brief History of Modern Digital Shaker Controllers

This article discusses four generations of digital vibration exciter control systems developed by U.S. companies over a period of 40 years. The controllers are categorized as standalone, PC-based, PC-tethered, and fully networked.

Posted in: Test & Measurement, White Papers

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Improving Fidelity of Noise Repetitive Signals with Signal Averaging Technology

For many high-speed data acquisition applications requiring extraction of small repetitive signals from noisy environments, such as LIDAR or optical fiber testing, minimizing the effects of noise is a challenge for system design. Signal averaging provides dependable and efficient results. The article illustrates how FPGA-based signal averaging technology processes signals and reduces noise effects, improving signal-to-noise ratio (SNR) without occupying valuable CPU bandwidth.

Posted in: Test & Measurement, White Papers

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Enabling Microliquid Chromatography by Microbead Packing of Microchannels

The microbead packing is the critical element required in the success of onchip microfabrication of critical microfluidic components for in-situ analysis and detection of chiral amino acids. In order for microliquid chromatography to occur, there must be a stationary phase medium within the microchannel that interacts with the analytes present within flowing fluid. The stationary phase media are the microbeads packed by the process discussed in this work. The purpose of the microliquid chromatography is to provide a lightweight, low-volume, and lowpower element to separate amino acids and their chiral partners efficiently to understand better the origin of life.

Posted in: Bio-Medical, Imaging & Diagnostics, Monitoring & Testing, Materials / Adhesives / Coatings, Optics/Photonics, Fluid Handling, Medical, Diagnostics, Measuring Instruments, Briefs, TSP, MDB

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How To Guide for the Most Common Measurements

The National Instruments “How-To Guide for Most Common Measurements” is a centralized resource portal for obtaining information about making common sensor and signal measurements. This guide covers the operating principle for the corresponding signal/sensor and offers guidance on how to make that measurement. View this guide to learn how to get to your measurements quickly.

Posted in: Test & Measurement, White Papers

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Spectrum Analyzer Fundamentals - Theory and Operation of Modern Spectrum Analyzers

This primer examines the theory of state-of-the-art spectrum analysis and describes how modern spectrum analyzers are designed and how they work. That is followed by a brief characterization of today's signal generators, which are needed as a stimulus when performing amplifier measurements.

Posted in: Test & Measurement, White Papers

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