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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.

50 Shades of Timebase

Scope timebase flavours include RT, IT, ET. What about the in-betweens? Read More...

A visit to ARRL headquarters

I had a chance to visit the Amateur Radio Relay League (ARRL) headquarters in Newington, CT. The ARRL is the national organization of radio amateurs in the U.S., and provides training, resources and representation of radio amateurs in Washington, D.C. Read More...

Friday Fun: Put on a happy (clock) face

Tired of looking at boring waveforms? Activate "Clock Power"! Read More...

Get the fix on common EMC problems

A presentation by EMC engineer Kenneth Wyatt shows engineers why problems occur and how to reduce them. See photos and video from the presentation and download the slides. Read More...

6 GHz spectrum analysis in your hand!

One of my long-term wishes is that TTi produce an analyzer with an upper range of 6 GHz. Well, my wishes have been met in their newly released model PSA6005! Read More...

500 MHz Oscilloscope for $5000 and a touch screen, too

Teledyne LeCroy's WaveJet Touch brings touch screens to a basic oscilloscope. Read More...

Live from Autotest: Keysight sets sights at modular instruments

Keysight's new PXI and AXIe products show they are serious in seizing the lead in modular instruments. Read More...

Two-port VNA takes just one PXIe slot

Keysight's M937XA series of six VNAs use just one slot in a PXIe chassis, letting you build an automated test station for both consumer and military products. Read More...

10 Things I saw at IDF2014

The Intel Design Forum came to San Francisco but, with so much pizazz, they could have called it the IoTDF because of the focus on the Internet of Things. Read More...

AXIe-0: The inside story of a new modular instrument standard

Like Coke Zero, AXIe Zero is the diet version of its namesake. Larry Desjardin explains the new standard for low cost instruments and switching. Read More...

>> SEE ALL

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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500 MHz Oscilloscope for $5000 and a touch screen, too

Teledyne LeCroy's WaveJet Touch brings touch screens to a basic oscilloscope. Read More...

Wireless tester aids femtocell manufacturing

Validated with the latest cellular and WLAN chipsets, the E6650A EXF wireless test set from Keysight Technologies is a one-box tester dedicated to femtocell manufacturing capable of delivering the speed, performance, and scalability required to ramp up production and lower test cost. Read More...

Two-port VNA takes just one PXIe slot

Keysight's M937XA series of six VNAs use just one slot in a PXIe chassis, letting you build an automated test station for both consumer and military products. Read More...

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...

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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

50 Shades of Timebase

Scope timebase flavours include RT, IT, ET. What about the in-betweens? Read More...

A visit to ARRL headquarters

I had a chance to visit the Amateur Radio Relay League (ARRL) headquarters in Newington, CT. The ARRL is the national organization of radio amateurs in the U.S., and provides training, resources and representation of radio amateurs in Washington, D.C. Read More...

Get the fix on common EMC problems

A presentation by EMC engineer Kenneth Wyatt shows engineers why problems occur and how to reduce them. See photos and video from the presentation and download the slides. Read More...

6 GHz spectrum analysis in your hand!

One of my long-term wishes is that TTi produce an analyzer with an upper range of 6 GHz. Well, my wishes have been met in their newly released model PSA6005! Read More...

Electronics of our youth

Let's reminisce about bygone projects & kits. Read More...

Live from Autotest: Keysight sets sights at modular instruments

Keysight's new PXI and AXIe products show they are serious in seizing the lead in modular instruments. Read More...

AXIe-0: The inside story of a new modular instrument standard

Like Coke Zero, AXIe Zero is the diet version of its namesake. Larry Desjardin explains the new standard for low cost instruments and switching. Read More...

10 Things I saw at IDF2014

The Intel Design Forum came to San Francisco but, with so much pizazz, they could have called it the IoTDF because of the focus on the Internet of Things. 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...

Keysight AWG boasts 65 GSa/s

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

>> SEE ALL

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