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All items tagged with test and measurement (411)

You Can DIY! Build a Voltage and Current Peak Detector

October 12, 2015 by George Ntanavaras

You Can DIY! Build a Voltage and Current Peak Detector

Here is a simple portable device from George Ntanavaras that can help answer the question about peak voltage and peak current requirements and whether or not your power amplifier is capable of driving your loudspeaker without clipping. This article was originally published in audioXpress March 2015 — Focus on Test & Measurement Edition. (Updated Dec 2015)

Get audioXpress November 2015 While It’s Hot!

October 7, 2015 by audioXpress Staff

Get audioXpress November 2015 While It’s Hot!

Do you want to know how good audio from smartphones actually is? Would you like to know which sound measurement apps are available for smartphones? Or would you prefer to build The PhaseBuster, a unique way to manipulate the phase between stereo channels? Or would you prefer to build a headphone hybrid amplifier? All that and much more can be found in audioXpress November 2015, available online.

Keysight Helps Engineers Verify, Debug Devices that Use Type-C Connector Technology

October 1, 2015 by audioXpress Staff

Keysight Helps Engineers Verify, Debug Devices that Use Type-C Connector Technology

Responding to an increasing market demand for fast development of USB 3.1 Gen 2 designs and designs using other high-speed signal standards that support the Type-C connector, Keysight Technologies introduced its N7015A high-speed test fixture, which the company says it’s the industry’s highest-signal-integrity Type-C test solution for high-speed differential bus probing.

Advanced Noise Analysis with XL2 Data Explorer Software from NTi Audio

September 25, 2015 by audioXpress Staff

Advanced Noise Analysis with XL2 Data Explorer Software from NTi Audio

With version 1.40 of NTi Audio’s XL2 Data Explorer software it’s now possible to quickly analyze and report on large measurement datasets, defining or changing the audit interval after the measurement, to add percentile levels to graphs and reports, greatly enhancing analysis capabilities.

LabNation Compact Open Source USB Oscilloscope Supports Apple iPad, Android, Microsoft Windows and Linux

September 24, 2015 by audioXpress Staff

LabNation Compact Open Source USB Oscilloscope Supports Apple iPad, Android, Microsoft Windows and Linux

Belgian company LabNation announced the launch of its open source USB oscilloscope, SmartScope. The lightweight device supports all PC and mobile operating systems and is powered directly from the host’s USB interface making it ideal for many test and measurement applications far from the workbench.

Audio Precision Announces DAQ Driver for LabVIEW Software

September 9, 2015 by audioXpress Staff

Audio Precision Announces DAQ Driver for LabVIEW Software

Audio Precision announced the release of their newest driver for National Instrument’s LabVIEW software, which enables easy access to APx515 as a data acquisition platform. Additionally, the driver enables control of the APx515 completely independent of the APx500 control software.

Saelig Introduces Multiple Instrument System MIS4 Universal Test System

August 4, 2015 by audioXpress Staff

Saelig Introduces Multiple Instrument System MIS4 Universal Test System

Saelig has introduced the ABI Electronics’ Multiple Instrument Station MIS4, a versatile all-in-one testing tool, combining eight high specification test and measurement instruments. An ideal solution for education, maintenance, PCB testing and troubleshooting, power-on/power-off testing, automated test sequences, etc.

Time Synchronous Averaging

July 26, 2015 by Christopher J. Struck

Time Synchronous Averaging

When performing electroacoustical response measurements, an important practical consideration is the reduction of uncorrelated background noise. Synchronous averaging (i.e., “complex averaging,” “time domain averaging,” or “vector averaging”) is a technique originally developed to analyze the vibration signature or rotating machines and gearboxes. It can be used to improve the S/N ratio measurement. This article was published originally in Voice Coil November 2012.

Octave and one-third octave band measurements with NTi’s FX100

June 16, 2015 by audioXpress Staff

Octave and one-third octave band measurements with NTi’s FX100

NTi Audio provides a tool to derive octave and one-third octave band results from FFT measurement results using the FX100 Audio analyzer, as required by audio applications where standards require octave or one-third octave band measurements.

Measurement and Perception of Regular Loudspeaker Distortion

June 3, 2015 by Wolfgang Klippel and Robert Werner

Measurement and Perception of Regular Loudspeaker Distortion

This article discusses the physical causes of regular loudspeaker distortions, their modeling by using lumped and distributed parameters, the objective assessment using modern measurement techniques, and the perception by the human ear. Article originally published in Voice Coil, May 2011

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