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Content tagged with Test & Measurement
posted in April 2011
Multiphase boost converter eases 12V battery 'cranking deep'
Design How-To  
4/29/2011   4 comments
Auto start-stop systems offer improved fuel efficiency and emissions, but vehicle electronics need to be protected from cranking transients. A multiphase boost converter is ideal for this function and can also simplify supplying power audio components in the infotainment system as well as isolating regenerative braking energy storage.
We have met the enemy and it is management
Engineering Investigations  
4/29/2011   19 comments
A new factory with 200 ft of beautifully designed burn tunnels...what could possibly go wrong?
Electric hub motor improves EV range: Part 1—Technology basics
Design How-To  
4/28/2011   18 comments
"Electronic gearbox" control circuitry requires less power, boosting range.
Yokogawa DL850 ScopeCorder
Product News  
4/28/2011   Post a comment
A new real-time mathematics option for the Yokogawa DL850 ScopeCorder introduces many new DSP-based functions that boost the instrument's power analysis capabilities as well as adding features such as sensor linearization and electrical to mechanical conversion.
Loudspeakers: Objective evaluations - Part 6: Other measurements
Design How-To  
4/27/2011   3 comments
In the sixth and final excerpt from the book "Sound Reproduction: The Acoustics and Psychoacoustics of Loudspeakers and Rooms," Floyd Toole considers other factors affecting loudspeaker performance beyond frequency response, including phase response, impedance, wire, damping factor and sensitivity.
ESD measurements enhance simulations
Design How-To  
4/26/2011   Post a comment
Researchers at the Missouri University of Science and Technology’s EMC lab study the effects of ESD and develop models that designers can use to predict the performance of the protection they add to electronic circuits.
Clare CPC7514Z monolithic high-voltage isolated analog switch array
Product News  
4/26/2011   Post a comment
Clare has introduced the CPC7514Z quad high-voltage isolated analog switch array for use in industrial controls, instrumentation, automatic test equipment and telecom applications.
AirCheck Wi-Fi tester extends WLAN performance and detection capabilities
Product News  
4/24/2011   Post a comment
Fluke Networks has released the latest version of the AirCheck Wi-Fi tester, a dedicated handheld tool that delivers quick and easy troubleshooting for today's increasingly complex WLANs.
Tools spur ECU CAN/LIN communications
Design How-To  
4/22/2011   Post a comment
With the increasing use of in-vehicle networks, the development of automotive electronic control units must not only consider the software requirement, but also the implementation of the embedded software via a data bus such as CAN or LIN.
IGBTs Transmit Woe to Analog Signal Conditioning
Engineering Investigations  
4/22/2011   10 comments
The ship date is looming, but a noisy VFAC drive creating huge signal spikes refuses to be calmed.
One-box emulator targets LTE
Product News  
4/21/2011   Post a comment
Spirent Communications has introduced the VR5 HD Spatial Channel Emulator for testing MIMO-based wireless base stations and mobile devices.
Plan strategies for adopting Model-Based Design for embedded applications: Part 4—Migration plan; implementation, verification, and validation
Design How-To  
4/21/2011   2 comments
When transitioning to Model-Based Design for embedded systems development, it is essential to consider an overall plan spanning people, development processes, and tools.
Goepel PXI 6161 communication controller supports MOST150 test
Product News  
4/20/2011   Post a comment
With the MOST150 infotainment bus system entering production, Goepel is providing a new communication controller supporting that bus system during design and test of MOST-based automotive systems.
Wirelaid technology enables high-current, fine-pitch SMDs
Design How-To  
4/19/2011   Post a comment
A rounded or rectangular cross-sectional area wire is integrated into the stackup design directly beneath the outer PCB layer.
Tech Tutorial: Implement automotive BLDC motor control
Design How-To  
4/19/2011   2 comments
In conjunction with control algorithms running on optimized microcontrollers, brushless DC motors offer efficient solutions, with various control schemes, including field oriented control (FOC), available.
Testing times for LTE – can it co-exist with 2 and 3G systems?
Design How-To  
4/15/2011   9 comments
The article expands on this industry background, including the introduction of voice over LTE, and defines and describes the various scenarios for Inter-RAT (Radio Access Technology) handover, including the proposed alternative fall-back scenarios for voice.
Power Line Communication integrates electric vehicles with the Smart Grid
Design How-To  
4/15/2011   6 comments
A compatible charging infrastructure and communication between an EV and any potential "charging spot" is required for easy and practical use. The established Power Line Communication (PLC) standard in the Smart Power Grid offers a robust and long term available setup—and the prospect of grid stabilization (charging back to the grid).
Sorry, I can only do one thing at a time
Engineering Investigations  
4/14/2011   15 comments
Obscure islands, a bottle of Calvados, a protocol analyzer and a problem
Using a Tektronix 834 to fix a balky printer
Engineering Investigations  
4/13/2011   4 comments
How to fix a remote British Airways printer, while wrestling with oddball IBM bit protocols in a far-away land
Engineers hijack Libyan telecommunications system
Engineering Pop Culture!  
4/13/2011   15 comments
A group of engineers is doing its part to help topple Libyan dictator Moammar Gadhafi
Gearing Up for parametric test’s high voltage future
Design How-To  
4/12/2011   Post a comment
Many parametric test engineers are learning to cope with new high voltage process requirements. Not surprisingly, high voltage processes require high voltage parametric testing for process control and reliability monitoring. Part of the challenge lies in the fact that these new high voltage requirements add to the list of parametric tests rather than replacing some portion of it.
Tech Tutorial: Transient voltage suppressors
Design How-To  
4/12/2011   1 comment
A major challenge in automotive design is protecting electronics against damaging surges, voltage transients, ESD, and noise that are present on the power line.
Component selection and layout strategies for avoiding thermal EMF
Design How-To  
4/8/2011   Post a comment
Understand how thermal effects can impact precision resistor circuits and what do to minimize them
Agilent boosts performance in millimeter wave signal analysis
Product News  
4/8/2011   Post a comment
Agilent's new millimeter-wave PXA signal analyzer covers to 50GHz, and extends to 325+GHz with external mixing.
Culture shock: Driving an electric car
Design How-To  
4/5/2011   69 comments
A few days of driving, and under the hood of, the Nissan Leaf EV shows the energy saving technologies in the car require a new driver mindset.
Why it pays to test before you fly
Product How-To  
4/5/2011   Post a comment
In a recent interview with T&M World's contributing editor Larry Maloney, John Monahan president of RT Logic described his companies communications-test and signal-monitoring technologies.
Do parts from Japan pose radiation risk?
News & Analysis  
4/1/2011   15 comments
Questions have arisen about contamination and radiation levels of electronics parts from Japan, though no dangerous radiation levels have been detected in any cargo, according to a trade group.
EXCLUSIVE! I'm driving a Nissan Leaf EV for a few days
Automotive DesignLine Blog  
4/1/2011   36 comments
If you have any questions about the Nissan Leaf, leave a comment here and I'll try and answer it.


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Rishabh N. Mahajani, High School Senior and Future Engineer

Future Engineers: Don’t 'Trip Up' on Your College Road Trip
Rishabh N. Mahajani, High School Senior and Future Engineer
2 comments
A future engineer shares his impressions of a recent tour of top schools and offers advice on making the most of the time-honored tradition of the college road trip.

Max Maxfield

Juggling a Cornucopia of Projects
Max Maxfield
7 comments
I feel like I'm juggling a lot of hobby projects at the moment. The problem is that I can't juggle. Actually, that's not strictly true -- I can juggle ten fine china dinner plates, but ...

Larry Desjardin

Engineers Should Study Finance: 5 Reasons Why
Larry Desjardin
37 comments
I'm a big proponent of engineers learning financial basics. Why? Because engineers are making decisions all the time, in multiple ways. Having a good financial understanding guides these ...

Karen Field

July Cartoon Caption Contest: Let's Talk Some Trash
Karen Field
139 comments
Steve Jobs allegedly got his start by dumpster diving with the Computer Club at Homestead High in the early 1970s.

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