General-purpose test equipment can have trouble measuring small currents, particularly if they only happen briefly. New specialized instruments go a long way toward solving this problem. Matt Liberty | Jetperch LLC The direct measurement of current is difficult. It’s usually impractical to count individual electrons, so the two primary techniques for measuring current actually measure […]
Remote Communication with USBTMC
Simple connections employing USB can replace more expensive GPIB setups in test instrumentation. Aaron Fernando, B&K Precision Corp. Engineers from a variety of industries use USB and USBTMC (USB Test & Measurement Class) to remotely control test and measurement instruments from a host computer. It is useful to compare USBTMC to the widely used GPIB […]
Testing LVDS devices at the margins with an AWG
Advanced arbitrary waveform generators have simplified the testing associated with communications over low-voltage differential signaling lines. Chris Loberg | Tektronix First introduced in 1994, low-voltage differential signaling (LVDS) has gone on to become widely used in products such as LCD panels, automotive infotainment systems, industrial cameras and machine vision, notebook and tablet computers, communications systems, […]
What’s new in USB Power Delivery 3.0
A new version of the USB spec puts additional demands on testing regimes that wring out power-handling options. David Maliniak | Teledyne LeCroy Since its official debut in 1996, the Universal Serial Bus (USB) protocol has seen numerous revisions spanning three generations of the standard, with USB 4.0 waiting in the wings for later in […]
Test instruments that aid PCB repair tasks
Basic tools such as DMMs and oscilloscopes may be the only test gear needed for small printed circuit board repairs, but it pays to know when automated systems would be a better choice. Alan Lowne | Saelig Co. Inc. PCBs are more complicated to repair today than even a few years ago. Manufacturing mistakes and […]
How standards and conformance tests shape the future of 5G New Radio
Specs for 5G NR release-15 have been finalized and plans call for product introductions this year. Sheri DeTomasi | Keysight Technologies, Inc. The development of 5G standards and their commercial rollout appears to be on a fast track. Mobile operators and network equipment makers are conducting field trials and the first smartphones are expected out […]
Test instruments tackle 5G
The high frequencies involved in 5G will force a re-think of how to go about characterizing circuits and systems. Adnan Khan | Anritsu Co. Engineers responsible for designing and manufacturing 5G chipsets, devices, and systems have more than enough challenges. From a technical standpoint, they must deliver high bandwidth, low latency, and other performance benchmarks. […]
Fluke test tools and protecting against arc flash
Fluke Corp. has manufactured electrical test and measurement instruments for decades, and these instruments have been well-known for accuracy, durability and great user-friendly interfaces. Maintaining those qualities, Fluke is now emphasizing electrical safety. This emphasis is apparent in Fluke’s new line of electricians’ hand tools, which are designed and built with the idea that after […]
PCB testing apparatus equipped with repositionable fine-point spring-loaded probes
The Sensepeek PCBite System is a professional-yet-affordable PCB testing apparatus with a system of repositionable fine-point spring-loaded probes, a large (8.3×11.7-in) metal baseplate, and four magnetic-base PCB holders for clamping circuit boards in a stable, fixed position. The probes are attached to a flexible, stable gooseneck arm that has a powerful magnetic base, and the […]
New device accurately measures gap, vibration and positioning
A third-generation digital capacitance displacement gauge features low noise and industry-leading resolution. The Accumeasure D Series (“Gen 3”) is designed with OEM customers in mind. With both analog and digital outputs, the Gen 3 can be seamlessly integrated into products to measure, monitor, and provide instant closed loop feedback for critical process parameters including gap, […]
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