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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.

Part Average Testing finds and rejects outlier ICs

There's a small tradeoff in the resulting lower yield, but Part Average Testing can weed out long-term failures. Read More...

Electromechanical measurements with an oscilloscope

Get a primer on making electromechanical measurements such as force, acceleration, pressure, temperature, and rotational speed. Read More...

Micrium adds ARMv8, Cortex-A50 RTOS support

Micrium's uC/OS-II and uC/OS-III now both support the ARMv8 architecture found in the Cortex-A50 series. Read More...

It's the firmware, of course

The venerable practice of debugging code with nothing but a scope and your wits is alive and well. Read More...

Current transducers measure to 25A, in PCB-mount format

LEM has added to its range a series of open-loop Hall-effect ASIC based devices measuring up to 25A DC, AC or pulsed Read More...

Multicoax connector takes multiport testing from DC to 18 GHz

Huber+Suhner’s MXP series is designed for the high speed digital testing market. Read More...

Review: The Physical Basis of EMC

While rather thin, this book is chock full of very important concepts vital to understanding how to design and troubleshoot products to meet EMC requirements. Read More...

Cranking simulator made easy

Matthias Ulmann outlines how to simulate and manage the drop of battery voltage during cranking of an engine. Read More...

Simplify DC-DC Converter Characterization

Characterize DC-DC converters for efficiency, line regulation, and load regulation. Read More...

Measure of emergence through smugness and faith

From bee hives to consciousness, emergence seems like magic, but if you apply serious computing power, you can make sense of it. Read More...

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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...

Measure inductance & capacitance over a wide range

Measure inductors and capacitors over a very wide range of values with this simple circuit. Read More...

Best Design Ideas of 2013Q3

We present the best Design Ideas of the last quarter! Read More...

Precision capacitance meter

There's an art to capacitance measurement. What do you think of this rendition? Read More...

Novel Q-meter

This highly unusual "cross-quad" circuit topology finds application measuring Q. Read More...

Voltage-to-period converter improves speed, cost, and linearity of A-D conversion

Turning a VFC on its head improves many parameters. Read More...

Complete, low-cost, software programmable ohmmeter measures micro-ohms

An ac voltage is generated by switching current into the unknown resistance. The resulting ac voltage is then amplified and filtered to produce an output voltage proportional to the resistance being measured. Read More...

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Current transducers measure to 25A, in PCB-mount format

LEM has added to its range a series of open-loop Hall-effect ASIC based devices measuring up to 25A DC, AC or pulsed Read More...

Multicoax connector takes multiport testing from DC to 18 GHz

Huber+Suhner’s MXP series is designed for the high speed digital testing market. Read More...

EMI receiver adds disturbance analysis

New feature lets engineers conduct discontinuous-disturbance, or click, measurements in accordance with CISPR standards. Read More...

Automated embedded test targets differential clocks

ChipVORX from Goepel Electronic now measures differential clocks and frequency within an FPGA. Read More...

PXIe embedded controller handles 12 Gbytes/s

Outfitted with a quad-core hyper-threading processor and a front-removable 240-Gbyte solid-state drive, the M9037A four-slot PXIe controller from Agilent delivers a maximum data bandwidth of 12 Gbytes/s for demanding computational processing in multi-chassis systems and secure environments. Read More...

Get 10 A through a PXI switch matrix

Pickering Interfaces announced a line of switch matrices with mechanical relays to get 10 A switching. Read More...

PCIe digitizer gains peak-detection option

A firmware upgrade for the U5303A PCIe 12-bit digitizer from Agilent enables real-time peak detection, while offering baseline stability and a self-trigger mode that reduces synchronous noise. Read More...

Passive probe monitors 4G LTE networks

In addition to 2G, 2.5G, and 3G technologies, Agilent Technologies’ J7523A passive network-monitoring system for converged telecommunication networks now supports 4G LTE. Read More...

Tektronix debuts 40 Gbps pattern generator at OFC

The PPG4001 generates PRBS and programmable patters and adds jitter. When combined with an error detector, it forms a complete BERT system. Read More...

Agilent debuts high-end oscilloscopes at OFC

High bandwidth, low noise, and a new user interface grace to Infiniium Z-Series. 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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Electromechanical measurements with an oscilloscope

Get a primer on making electromechanical measurements such as force, acceleration, pressure, temperature, and rotational speed. Read More...

Simplify DC-DC Converter Characterization

Characterize DC-DC converters for efficiency, line regulation, and load regulation. Read More...

Design Verification Testing of GPS Receivers

Anyone can sell a GPS receiver product that would be unable to hear signals and be completely non-functional. It could work most of the time, just not all the time, and not in any predictable way. Design verification testing to the rescue. Read More...

PCB characteristics affect PDN performance

Since no impedance path is perfectly flat, we need to make some design adjustments. This article aims to help you make compromises that have the minimum impact on the system performance. Read More...

Automate comparator hysteresis tests

An automated system using a programmable power supply and a high-speed digital I/O card can reduce validation time by almost 90% over manual methods. Read More...

Open FPGAs add flexibility to test

With access to an instrument's FPGA, you can add measurement science to your test applications. Read More...

Vintage test equipment: Not just for old engineers

Take a tour of a high-school student's collection of vintage test equipment. Have you used any of these products? Read More...

MSOs probe analog and digital

Mixed-signal oscilloscopes combine analog and digital inputs that provide a view of how signals interact in embedded systems. Read More...

The next generation's modulation: PAM-4, NRZ, or ENRZ?

At OFC 2014, a panel of engineers discussed three possible forms of modulation for 56 Gbps data channels. The debate continues among PAM-4, ENRZ, and NRZ. Read More...

The blurring line between oscilloscopes and On-Die instrumentation

At 28 Gbits/s instrumentation on the die eliminates the inevitable signal losses in interconnects. Read More...

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04.10.2014

Simplify DC-DC Converter Characterization

Characterize DC-DC converters for efficiency, line regulation, and load regulation.Read more...

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