Wi-Fi Testing Now Includes Performance
"In addition to fairness and quality of service, test plans will cover interference from other devices such as ZigBee and Bluetooth that use the same unlicensed 2.4 GHz channels as Wi-Fi. Plus, there is the issue of many 802.11 routers covering any given area."
The WT-398 standard is up for a vote and the release is expected by the end of June.
Just because your Wi-Fi router complies with 802.11 standards and has passed interoperability tests doesn't mean that you'll be happy with its performance. That's why the Broadband Forum is developing WT-398. When approved, WT-398 will specify tests for Wi-Fi router performance. In parallel with that document's development, the University of New Hampshire Interoperability Lab (UNH-IOL) has announced testing services for Wi-Fi performance.
The impetus for WT-398, which is not yet available publicly, came from service providers that deliver internet access and provide either Wi-Fi routers that are either integrated with gateways or are separate units. "Service providers found themselves providing support for home networking issues," said UNH-IOL senior engineer Lincoln Lavoie in an interview with EE Times. "The problem stems from so many devices now being connected to a home router."
DMM 101: Handheld vs. bench digital multimeters | Tektronix
Handhelds and bench digital multimeters both offer different sets of features and capabilities. Take a look at what areas these two sizes perform the best. Which one do you use more often?
"More than perhaps any other instrument category, digital multimeters or DMMs come in a wide range of shapes and sizes. DMMs intended for use in the field emphasize portability and battery operation so service technicians and maintenance personnel can quickly and easily make basic voltage, current and resistance measurements as they go from location to location. For these applications, resolution, accuracy, measurement speed or connection to a computer are less important than battery life, durability and size."
Develop Repeatable RF Measurement Methods
How you choose your equipment and testing plan is key to making testing more accurate and simple. It is also very important to make sure the equipment is properly calibrated. Take a look at this article to see how you can overcome the main issues that may affect the accuracy of measurements performed on RF/microwave aerospace systems.
These practices can lead to consistent results with test equipment, including those routines that help ensure the safety of the equipment as well as those who are at the controls.
How to use oscilloscopes with integrated test instrumentation
Oscilloscopes with integrated test instrumentation offer many benefits by housing additional instruments like portability and financial savings. This article explains how to use each feature for successful testing.
Many manufacturers have in recent years have introduced oscilloscopes with integrated test instrumentation. This means that the smaller and lighter oscilloscope enclosure actually houses about five additional test instruments."
What’s the Difference Between Signal Analyzers and Oscilloscopes for Frequency Analysis?
Are you aware of the difference Between Signal Analyzers and Oscilloscopes for Frequency Analysis? They might seem identical for this purpose, but that's not always the case.
The analysis of RF and microwave signals in the frequency domain used to be the forte of the spectrum analyzer, but now it’s become a choice between signal analyzers and digital oscilloscopes. How did this happen? What’s the difference? How how do we choose? Let’s take a look.
Promising Future Ahead For Spectrum Analyzer Market
The spectrum analyzer markets has grown rapidly for the past couple of years. The huge demand for wireless technology, in combination with better bandwidth and frequency, as well the use of portable and handheld analyzers, are important drivers behind the growth.
This article lays out key trends in the Spectrum Analyzer market, such as an increased demand for secondhand spectrum analyzers.
Spectrum analyzers are a handy tool that analyze signal frequencies and amplitude on a logarithmic scale when an electrical signal passes through the device’s system. Over the years, spectrum analyzers have become widely used in industries like manufacturing, designing, and even in services involving repairs, determining performance, along with detecting and troubleshooting errors of electrical devices.
The process of measuring modulation quality is implemented for smooth data transmission, which is critical on both the transmission and receiver end. Some important spectrum analyzer characteristics to complement this facet of a spectrum analyzer’s functions are signal-to-noise ratio, along with noise figure tests, all of which improve the overall performance of the system.
Your Guide to Buying Network Analyzers
What information do you need and what factors should you take into consideration when buying a network analyzer? This guide walks you through.
In order to choose the right network analyzer for a given application, it is necessary for buyers to understand the demands of the electrical network they will be working with.
Simple electrical networks that must measure amplitude alone can use a basic SNA-type network analyzer. Moderate to complex electrical networks that require measuring amplitude properties and phase properties require a VNA-type network analyzer. Complex electrical networks that must measure harmonics require a MTA or LSNA-type network analyzer.
How to bring innovation into your product design and engineering
Innovation - so easy to wish for, more challenging to set off time for. The biggest obstacle to innovation is just that, lack of time. This ebook lays out strategies to break down the barriers to innovation and help unleash your creativity.
This ebook will share strategies to that break down the barriers to innovation and help unleash your creativity.
Your days may be so packed that it's difficult to carve out time for innovation. And yet you know it's important. It's a new year and the perfect timing to re-evaluate how you are doing things and what that could be improved.
Tools that help free up your daily tasks are critical. Learn about these and other tools that will help you integrate innovation into your workflow.
Boost efficiency and streamline your workflow, saving valuable time and allowing innovation to flourish.
Break down the barriers to what you can achieve when designing the next generation of your product.
INCREASE INNOVATION CAPACITY
Innovate more quickly, meet consumer demands for customized products, and get the product out the door faster.
Top test & measurement stories of 2017
Ranging from transistor testing to reducing oscilloscope noise during measurements, here are the top test & measurement stories that got most attention in 2017.
As we move on to a new year, it gives us some time to reflect on the year that just passed. Here is a summary of some of the most popular topics.
XYZs of Signal Generators Primer | Tektronix
XYZs of Signal Generators - This primer from Tektronix explains the basics of Signal Generators, covering the types, generators, their applications and their contribution to a complete test and measurement solution.
This primer explains signal generators, their contribution to the measurement solutions and their applications. After reading this primer, you will be able to:
- Understand how signal generators work
- Recognize electrical waveform types
- Know the differences between mixed signal generators and logic signal generators
- Understand basic signal generator controls
- Know how to generate simple waveforms
7 Tips for Better Oscilloscope Probe Selection and Usage
How To's for Better Oscilloscope Probe Selection and Usage
These tips help further refine the understanding and ultimate selection of your next probe, in order to fully exploit your equipment and gain confidence in probe measurements.
What's awful about being a software engineer, tech lead and manager?
"I work really hard and then someone tells me to redo it".
Most of the times you might love your job. But then there are certain things that can make you feel like switching career at that very moment.
Here is an overview of the downsides of being a software engineer, tech leach or manager.
I've been building software professionally for over 10 years now. I love what I do and I hope to be an old programmer someday. But along the way, I've encountered many terrible things that have made me hate my job. I wish that someone had given me a roadmap of what to expect earlier in my career, so when some new and unfortunate awfulness occurred that I wouldn't have felt so alone and frustrated.
This post is meant to be such a guide.
Physicists open the door to the first direct measurement of Berry curvature in solid matter
Measurement takes all forms and is important in everything we do.
UC Santa Barbara physicists have opened the door to the first direct measurement of Berry curvature in solid matter. Their work, published in the journal Physical Review X, builds on a previous UCSB paper in which they describe experiments resulting in an electron-hole recollision achieved by aiming high- and low-frequency laser beams at a semiconductor made of gallium arsenide.
BGU Researchers Crack the Code of Invisibility
A team has found a way to manipulate light to render an object invisible. Learn more about the opportunities this breakthrough opens up for.
The Jerusalem Post – BGU researchers have made a breakthrough in manipulating light to render an object, such as an optical chip, invisible.
According to the recent study published in Nature Scientific Reports, the researchers invented a new method that deflects and scatters light away from the “cloaking” chip’s surface so it is not detected.
Keeping pace with increasingly intelligent machines
As embedded devices become more advanced, engineers are facing significant challenges to ensuring the quality of these on time and on budget.
To keep pace with this rapidly evolving complexity while also ensuring safe, high-quality vehicles, development teams must evolve the methods organizations use to design and validate embedded software.
A modern automobile has millions of lines of code, which can range in functionality from engine control to navigation to automated seat adjustment. While no off-highway vehicle currently incorporates this many ECUs, National Instruments is quite sure this level of software integration is most certainly on the horizon for agriculture and construction equipment.
Everyone who has used a webpage, phone app, or other consumer software product is aware that errors in software are common and expected. The challenge is that in the consumer space, these errors are typically resolved with a quick reset of the application with relatively little impact to the user (lost data excluded).
However, when this paradigm is applied to an electromechanical system these errors can have catastrophic consequences if they are present when the customer operates the machine.
Create a Halloween Pumpkin Like a NASA Engineer
NASA's engineers are sharing some creative ideas of how to design a pumpkin that will be noticed by your neighbors.
Want to make an out-of-this-world Halloween pumpkin? Take a cue from the engineers at NASA’s Jet Propulsion Laboratory. It’s their job to design and build robots that can travel millions of miles to study other planets – and sometimes even land and drive around on the surface.
So on Halloween, they can’t help but bring some of that same creative thinking to designing stellar pumpkins inspired by space exploration.
Will IoT Sensors Lead to Test Headaches?
Have you experienced too much IoT-like sensor information causing false alarms, and subsequent unnecessary shutdowns of the system, or just ignoring of all alarms?
The number and types of sensors are growing significantly. EE Times discusses how this also could result in many unforeseen system-oversight implications.
"As any experienced engineer knows, sensors are the most vulnerable part of a system. Due to their inherent role, sensors are exposed to the nasty real world of moisture, vibration, temperature, and other physical stresses to a lesser or greater extent. Sometimes the exposure is directly due to what is being monitored, but often it is a side effect of monitoring some other parameter. Regardless of the cause, sensors live a much harder life than the electronics on the typical PC board, even if that board is in an automotive environment.
The problem is that as we add IoT sensors to everything, we'll be seeing more false positives and negatives that will be harder and harder to test and assess. Soon, planning for how to test the veracity and credibility of the many readings and alarm indicators will become a larger part of the project."