Test & Measurement

Six Axes of Calibration

In a system or on a lab bench, proper instrument calibration reduces the chances of false test results. Not all calibrations are equal, and six key factors affect quality, usefulness and cost. In Six Axes of Calibration, we highlight the importance and value of each factor. Download application note.

Posted in: White Papers, Instrumentation, RF & Microwave Electronics, Test & Measurement


Fabricating Optical Mirrors for Use in Outer Space Measurements

There are many ways to manufacture an optic depending on the complexity of the component and the application. From choosing the best substrate, to detailing the numerous operations required to make the optic, all the while considering tight tolerances and other specifications. This article highlights the precision needed to successfully fabricate the mirrors for the Hobby-Eberly Telescope Dark Energy Experiment’s (HETDEX’s) Visible Integral Field Replicable Unit Spectrographs (VIRUS) unit which was designed to measure dark energy in outer space.

Posted in: Application Briefs, Aerospace, Optics, Measuring Instruments


High-Speed Cameras Help Digital Image Correlation Show Its Strength

Digital Image Correlation (DIC) using high-speed cameras is gaining in popularity as a method for measuring material deformation and strain. That popularity is based on some real advantages of DIC over traditional sensors, and supported by advances in camera capabilities, integrator software, and new measurement techniques.

Posted in: White Papers, Coatings & Adhesives, Materials, Physical Sciences, Test & Measurement


Signal Source Challenges Facing Quantum Computing and Research

Today there is a huge rush to explore quantum phenomena and develop technologies based on quantum physics. These technologies range from quantum computing to new communications schemes and have the potential to revolutionize the world. In developing these technologies, there are common challenges facing researchers who are using signal sources to stimulate, measure, and get feedback from their quantum experiments.

Posted in: On-Demand Webinars, Test & Measurement


High-Resolution Surface Measurement

Inspectors who are assessing the severity of defects and the dimensions of small features on precision machined surfaces are limited by the capabilities of existing measurement techniques. A new type of instrument has been developed that enables direct, non-contact inspection of precision surfaces in shop floor environments. By combining the resolution of optical techniques with the portability of a handheld gauge, the new technology gives inspectors an important tool for finding and quantifying critical features on machined components.

Posted in: Articles, Aerospace, Test & Measurement


Optical Fiber Sensors for Infrastructure Monitoring

Virtually every type of public infrastructure — including bridges, pipelines, tunnels, foundations, roadways, dams, etc. — is subject to factors that can degrade it or lead to malfunctions. These structural problems can be the result of deterioration, improper construction methods, seismic activity, or nearby construction work. Although electrical strain gauges have long been used for monitoring structural changes, they sometimes lack the durability and integrity necessary to provide accurate, actionable information over extended periods.

Posted in: Articles, Optics, Test & Measurement


ECG Small Signal General and Analysis

Electrocardiogram (ECG or EKG) is the most common way to identify various ailments, especially when the ailment is related to the heart. To perform an ECG, the medical personnel places the leads on the patient’s skin. The leads measure the heart’s electrical activity of one heartbeat cycle and record it as a continuous line tracing on paper to produce a graph. The ECG signal may indicate:

Posted in: Articles, Diagnostics, Medical, Monitoring, Test & Measurement


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