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UBM Tech

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.

Logic analyzer debugs DDR4 DIMMs at 2.5 Gb/s

The U4154B AXIe-based, state-mode logic analyzer from Keysight Technologies validates simultaneous read and write DDR4 traffic across all byte lanes captured from a DDR4 DIMM operating at data rates of more than 2.5 Gb/s. Read More...

Don't damage thin devices when testing

ICs are easy to damage when performing reliability qualification tests. Read More...

Do we need Radio Shack anymore?

The chain of electronics stores is on the verge of bankruptcy. Will you miss it? Read More...

Measurement uncertainty in VNAs vs. TDRs, Part 1

Is there a difference in measurement uncertainty between vector network analyzers and time domain reflectometers? Read More...

Compact system simplifies broadcast monitoring

Prismon from Rohde & Schwarz subsidiary GMIT is a 1U multi-image and content-monitoring system for broadcast networks and headends that not only monitors SDI, ASI, TS over IP, and T2MI signals, but also automatically detects content errors. Read More...

Keysight AWG boasts 65 GSa/s

The M8195A arbitrary waveform generator targets optical, digital, RF, and aerospace/defense applications. Read More...

Goodbye Copperclad Road

We get down to the nitty-gritty business of prototyping and testing the ECL-based, copperclad-built test-fixture. Read More...

"Lab in the Corner" empowers the test engineer

As a follow-up to "The Measurement Blues," Martin Rowe has recorded "The Lab in the Corner," an ode to test engineers and the role they play in product quality. Read More...

Copperclad Road (with apologies to Steve Earle)

An ECL warrior battles the copperclad to produce a high-performance breadboarded test fixture. Read More...

Can’t we all just get along?

Test engineers are your friends, not your enemies. Here are some processes and ideas to help foster that thought. Read More...

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Short circuit tracer/finder uses low power

Build this bench tool and become a master at pinpointing shorts. Read More...

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...

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Logic analyzer debugs DDR4 DIMMs at 2.5 Gb/s

The U4154B AXIe-based, state-mode logic analyzer from Keysight Technologies validates simultaneous read and write DDR4 traffic across all byte lanes captured from a DDR4 DIMM operating at data rates of more than 2.5 Gb/s. Read More...

Compact system simplifies broadcast monitoring

Prismon from Rohde & Schwarz subsidiary GMIT is a 1U multi-image and content-monitoring system for broadcast networks and headends that not only monitors SDI, ASI, TS over IP, and T2MI signals, but also automatically detects content errors. Read More...

2-D reader handles challenging DPM barcodes

Cognex has launched the DataMan 8600 series of handheld direct part mark (DPM) barcode readers for manufacturers implementing part traceability programs across the automotive, consumer electronics, aerospace, and oil and gas industries. Read More...

Audio analyzer claims world's lowest noise

Audio Precision's APx555 bridges the gap between bench and production testing while providing -117 dB of THD+N. Read More...

Measure low current and high resistance

Two new instruments from Keysight Technologies help with researching new materials through low current and high-resistance measurements. Read More...

Cognex expands vision-sensor capabilities

In addition to an industrial vision controller, Cognex has introduced new 3-D vision tools for its DS1000 series of 3-D laser-displacement sensors for applications requiring high resolution and expanded measurement range. Read More...

Power-source external drive enables real-time HIL control

An external drive option for the California Instruments RS series of programmable AC power sources gives engineers a way to directly control the output of an RS series source in real time, allowing them to be more easily used in hardware-in-the-loop (HIL) test systems. Read More...

100-MHz digital oscilloscope replaces analog predecessor

B&K Precision offers the 2190D bench digital storage oscilloscope, a compact dual-channel instrument with a 100-MHz bandwidth and a 1-Gsample/s sampling rate that builds on the features of the discontinued analog 2190B oscilloscope. 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...

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...

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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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Don't damage thin devices when testing

ICs are easy to damage when performing reliability qualification tests. Read More...

Measurement uncertainty in VNAs vs. TDRs, Part 1

Is there a difference in measurement uncertainty between vector network analyzers and time domain reflectometers? Read More...

Tryout: Teledyne LeCroy WaveSurfer 3000 oscilloscope

The WaveSurfer 3000's Maui user interface lets you get products quickly. Read More...

Why are oscilloscope probe amps at the tip?

Placing the amplifier as close to the measurement point as possible minimizes signal losses in the probe and its cable. 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...

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...

>> SEE ALL

Do we need Radio Shack anymore?

The chain of electronics stores is on the verge of bankruptcy. Will you miss it? Read More...

Keysight AWG boasts 65 GSa/s

The M8195A arbitrary waveform generator targets optical, digital, RF, and aerospace/defense applications. Read More...

Can’t we all just get along?

Test engineers are your friends, not your enemies. Here are some processes and ideas to help foster that thought. Read More...

What is 802.11ac, anyway?

IEEE 802.11ac is increasing data rates for wireless devices. Read More...

EMC pre-compliance testing ups success rate, part 1 of 3

Save time and money by conducting EMC pre-compliance testing yourself. Read More...

Designing testability into a PCB

It's easy to forget about test needs when designing a PCB. Here are some reminders. Read More...

The difference between BER and BER

Bit-error rate and bit-error ratio are not the same, but we often think they are. Read More...

DesignCon abstract reviews complete

An update on the technical program progress for DesignCon 2015. Read More...

Boston-Area EMC Seminar on Sept. 16

EMC engineer Kenneth Wyatt will give a practical EMC seminar at Bose Corp. in Framingham, Mass., on September 16, 2014. Read More...

DesignCon Chiphead goes to Europe

DesignCon's mascot, known as Chiphead, gets out of silicon Valley by touring Spain and Amsterdam. Read More...

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