An array of new features have been added to Moku:Go, Liquid Instruments’ complete engineering lab solution for engineers and students, and updates to features on Moku:Pro, the company’s integrated platform for the most demanding research and engineering applications. The enhancements broaden the capabilities of Liquid Instruments’ flagship software-defined products, making high-performance features more accessible to […]
Test and Measurement Tips
Scope-based diagnosis of three-phase motor drives
Ordinary oscilloscopes can view basic parameters in modern motor drives, but operational insights generally require specialized power analyzers. Variable frequency drives (VFD) generate carefully controlled pulse-width modulated (PWM) waveforms to modulate the speed of industrial ac motors. Often, the motors involved are three phase. Three-phase ac induction motors (ACIMs) are widely used though they are […]
PHY conformance test tool to support UWB development efforts
A FiRa-validated ultra-wideband (UWB) PHY Conformance Test Tool (PCTT) supports the further development of an open and standardized UWB ecosystem. With expertise and experience in wireless technology verification and certification, Rohde & Schwarz is well positioned to provide a test tool to support interoperability on the UWB physical layer as specified by FiRa. Thanks to […]
Audio measurements for product development
It pays to know the fundamental parameters that quantify the performance of sound equipment. Daniel Knighten, Audio Precision Quantitative, objective audio measurements have a role to play not just during design validation and as a manufacturing quality control tool, but during all stages of product development . They even come in handy during the earliest […]
Whatever happened to parallel interfaces?
Back in the early days of desktop personal computers, parallel interfaces were the norm rather than the exception. The parallel moniker refers to the way the data is sent; parallel ports send multiple bits of data simultaneously, as opposed to serial communication where bits pass one-at-a-time typically over a single connection. The rationale for parallel […]
EMI testing for IoT transceivers
A few oscilloscope measurements can give insight into sources of electromagnetic interference that garble the operation of wireless IoT devices. Examine a typical wireless device with an internet of things connection and you’ll likely find multiple RF receivers squeezed together in close proximity onto a circuit board. Cramped quarters characterize modern IoT electronics, so sensitive […]
What you need to know about error analysis in PCIe 6.0 Designs
The much-awaited next generation of PCIe makes it important to understand bit error-rate measurements. Hiroshi Goto, Anritsu Co. PCI Express (PCIe) 6.0 is being developed to meet the high-speed data transmission needs of emerging applications, particularly data centers supporting 5G. It features a doubling of data rates and other enhanced performance specs but at a […]
The many measurements of power quality
There’s a confusing variety of ways to quantify power consumption. Make sure you understand what your favorite power metric means. To most engineers, the concept of power quality pertains to characteristics of the ac line feeding grid energy to equipment in a facility. But variations of the “power quality” term now can refer not just […]
A frequency you can count on
Leland Teschler • Executive Editor There are few constants in life, but what few there are might include death, taxes, and a U.S. grid frequency that doesn’t vary by more than ±0.5 Hz. However, the certainty of the grid frequency is coming into question, thanks to the rising percentage of renewable energy sources that supply […]
Now out: The new Test & Measurement Handbook
Featuring 17 articles, the 2022 Test & Measurement Handbook looks at EMI, motor testing, 5G measurements, power quality, and other topics. Welcome to EE World’s 2022 Test & Measurement Handbook. We gathered a new collection of articles, some 17 in total. The articles in this year’s handbook look at Test & Measurement across hardware and […]