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Test & Measurement

Martin Rowe
Senior Technical Editor
Technical information about test and measurement equipment and strategies from the point of view of the R&D or design and development engineer. Topics include T&M hardware such as oscilloscopes and signal generators/analyzers, as well as software and test methodologies.

The EE consultant who despises engineering fraud

From time domain vs. frequency domain to NRZ vs. PAM4 to EE luminary Steve Weir shares insight into the electronics design industry, some movie suggestions, and fraud technologies. Read More...

10 modular instrument companies no longer seen

A quick look through a old issue of Test & Measurement World shows many companies who were either acquired, exited the test business, or are just gone. Read More...

Instrument software analyzes DOCSIS 3.1 signals

Engineers involved in the research and development of cable TV network components can use the Rhode & Schwarz DSA snapshot analysis software to perform BER and MER measurements on real-life DOCSIS 3.1 signals and characterize downstream signals up to 192 MHz. Read More...

Visit to Clemson University's Automotive Electronics Laboratory

The lab targets four primary areas of research: automotive electronics, aerospace electronics, electromagnetic compatibility, and electromagnetic modeling. Read More...

View noisy signals with a stable oscilloscope trigger

Without a stable trigger, oscilloscope displays can become nearly useless for measurements, documentation, and analysis. Read More...

Clever engineering creates rock-bottom component tester

A cleverly designed little board hits the sweet spot, for mere lunch money. Read More...

LabVIEW 2014 focuses on data analysis

LabVIEW 2014 adds features that help you get results from your data faster and includes user-driver features for maximizing code development. Read More...

Never use pigtails on cable shields

Videos show the results of using pigtails on shielded cable compromises shielding effectiveness. Read More...

The EMC Band plays again

Engineer musicians regrouped in 2014 to entertain attendees at the IEEE EMC Symposium. Read More...

ESD wrist-strap insulation decomposes

Several ESD wrist straps suddenly have exposed wires as the insulation fails and gets sticky. Read More...

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LabVIEW real-time seismic alert system

National Instrument’s LabVIEW has uses beyond instrument control, as demonstrated by this Web app. Read More...

LTC Design Note: Robust 10MHz reference clock input protection circuit and distributor for RF systems

Design a protected 10MHz reference input without degrading phase noise. Read More...

Milliohm Squawker great at finding shorts and reverse engineering PCBs

This well thought out tool for “listening to” low resistances really speeds troubleshooting & tracing. Read More...

Versatile noise generator tests signal recovery gear

Accurate noise generator allows mixing-in of a clean test signal. Read More...

LTC Design Note: Measure RH with instrumentation-grade system monitor

An accurate, modern system monitor chip senses humidity the old-fashioned way. Read More...

Simple capacitance meter bins parts

This simple, elegant circuit lets you quickly sort through capacitors. Read More...

Detect wire breaks with unusual CMOS gate circuit

TDR in the shop? Try this circuit to detect a wire break. Read More...

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Instrument software analyzes DOCSIS 3.1 signals

Engineers involved in the research and development of cable TV network components can use the Rhode & Schwarz DSA snapshot analysis software to perform BER and MER measurements on real-life DOCSIS 3.1 signals and characterize downstream signals up to 192 MHz. Read More...

LabVIEW 2014 focuses on data analysis

LabVIEW 2014 adds features that help you get results from your data faster and includes user-driver features for maximizing code development. Read More...

Diverse attenuator range suits most connectors

With a total of 236 part numbers, Fairview Microwave’s family of 25-W, 50-W and 100-W attenuators—with operating frequencies of up to 18 GHz and a peak power rating of 500 W—gives designers the freedom to select their desired product from an expansive offering of off-the-shelf fixed attenuators. Read More...

Software generates Wi-SUN, LTE, and LTE-Advanced signals

Two additions to Keysight Technologies’ Signal Studio software suite of signal-creation tools target R&D and manufacturing engineers developing or testing the conformance of devices to the IEEE 802.15.4g-based Wi-SUN standard and LTE/LTE-Advanced uplink 2x2 MIMO with real-time HARQ (hybrid automatic repeat request). Read More...

Single-box tests analog and digital radio

Portable instrument tests analog and digital radio for RF power, FM deviation, VSWR, return loss, insertion loss, and others. Read More...

Keithley power supply measures, too

The 2280S Precision Measurement, Low Noise, Programmable DC Power Supplies provide power, measure output current and voltage and, can graph them. Read More...

Power analyzer measures two bandwidths simultaneously

Aimed at electric vehicle research and variable-frequency drive applications, the LMG670 power analyzer from ZES Zimmer enables users to measure narrowband and full spectrum values up to 10 MHz at the same time and compare them in one view. Read More...

Integrated system tests electric drive trains

HBM’s eDrive test system measures the performance and efficiency of electric motors and inverters, allowing engineers to record, verify, and study both electrical and mechanical parameters under dynamic conditions. Read More...

Network tester scrutinizes 10 Gbps optical networks

The MT1000A Network Master Pro from Anritsu, together with the MU100010A test module, provides all the capabilities required for field testing an OTN. Read More...

DC supplies perform solar-array simulation

Housed in a compact 2U form factor, three high-power programmable DC power supplies from B&K Precision deliver output power of up to 5.1 kW and provide a built-in solar-array simulator function to generate photovoltaic I-V curves. Read More...

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The Tektronix 1101 oscilloscope-probe power supply

A mechanical design is at once a masterpiece and an expensive expedient. Read More...

What's inside a smart meter? iFixit tears it down

When iFixit's Kyle Wiens had the opportunity to tear down an Elster smart meter, he jumped at it—not to come up with a repair manual but to evaluate the health and safety issues that seem to surround the utilities’ installation of smart meters. Read More...

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View noisy signals with a stable oscilloscope trigger

Without a stable trigger, oscilloscope displays can become nearly useless for measurements, documentation, and analysis. Read More...

Never use pigtails on cable shields

Videos show the results of using pigtails on shielded cable compromises shielding effectiveness. Read More...

Match impedances when making measurements

Unless you deliberately want to add noise and ringing to step signals, make sure at least two of your source, transmission medium, and termination are matched. Read More...

Perform pass/fail tests with an oscilloscope

Eliminate downloading data and writing test code. Let the oscilloscope run the tests. Read More...

Boost and modify square waves: More circuits

Build your own signal-conditioning modules to provide the amount of voltage, current and power you need. See schematics for using timer, amplifiers, and voltage regulators to get your desired test signals. Read More...

Boost and modify square waves

Build your own signal-conditioning modules to provide the amount of voltage, current, and power you need. See schematics for the circuits. Read More...

Challenges in LBIST validation for high reliability SoCs

The challenges of developing LBIST tester patterns for production, and ways of creating such patterns efficiently. Read More...

Product How To: Calculate power with a scope

Teledyne LeCroy’s Art Pini explains the math behind automatic power calculations on an oscilloscope equipped with power analysis software. Read More...

Product Tryout: NI VirtualBench

National Instruments entered the bench instrument market with the faceless VirtualBench, an all-in-one test instrument. It has most, but not all, of what you'd expect. Read More...

Profiles in Design: Istvan Novak

If you’ve spent any time at a DesignCon conference over the years, chances are you’ve met Istvan Novak, who attended his first DesignCon in 1994. Currently, he is a senior principal engineer at Oracle, working on power and signal integrity modeling, designs. Read More...

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The EE consultant who despises engineering fraud

From time domain vs. frequency domain to NRZ vs. PAM4 to EE luminary Steve Weir shares insight into the electronics design industry, some movie suggestions, and fraud technologies. Read More...

10 modular instrument companies no longer seen

A quick look through a old issue of Test & Measurement World shows many companies who were either acquired, exited the test business, or are just gone. Read More...

Visit to Clemson University's Automotive Electronics Laboratory

The lab targets four primary areas of research: automotive electronics, aerospace electronics, electromagnetic compatibility, and electromagnetic modeling. Read More...

Clever engineering creates rock-bottom component tester

A cleverly designed little board hits the sweet spot, for mere lunch money. Read More...

The EMC Band plays again

Engineer musicians regrouped in 2014 to entertain attendees at the IEEE EMC Symposium. Read More...

ESD wrist-strap insulation decomposes

Several ESD wrist straps suddenly have exposed wires as the insulation fails and gets sticky. Read More...

EMC Symposium 2014

A quick review of the recent IEEE EMC Symposium held in Raleigh, NC, August 2014. Read More...

LTE devices may interfere with cable TV

There have been reports of LTE phones interfering with consumer set-top boxes. A paper presented at the 2014 IEEE EMC symposium describes the problem, the test procedure, and test results. Read More...

IDDQ testing to improve yield and reliability, 2/2

Improving IC yield and reliability with IDDQ Testing, part 2. Read More...

Fundamentals tutorial provides an EMC overview

The 2014 IEEE EMC Symposium opened wih half-day and full-day tutorials. EDN editor Martin Rowe attended an EMC tutorial on Monday morning, August 4. Read More...

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