by Christopher L. Grachanen Vector Network Analyzers (VNA) are used to measure a variety of RF parameters such as transmission loss, reflection loss, phase and group delay for a variety of passive RF devices and […]
by Christopher L. Grachanen Spreadsheets are one of the most prolific software tools used in calibration and test laboratories. From simple math computations and to sophisticated data curve fitting, spreadsheets are typically the de facto […]
by Sean Nielson When choosing which instrument to use when calibrating pressure, the two most popular choices are deadweight testers and digital pressure gauges/calibrators with a pressure comparator. Each has its advantages and disadvantages. The […]
by Jerry Eldred Although rise time is a common calibration measurement in pulse/function generators and some oscilloscopes, it is often not well understood. Making a good rise time measurement is somewhat similar to home stereo […]
by Michael Johnston Due to the high accuracy of the long scale (8½-digit) meters, the standards and methods required to perform a verification of the device often make automation of the process difficult. Alternatively, guardbanding […]
by Richard Hogan Probability distributions are a part of measurement uncertainty analysis that people continually struggle with. Today, my goal is to help you learn more about probability distributions without having to grab a statistics […]
by Richard Hogan The evaluation of uncertainty in measurement results is becoming an important requirement for laboratories seeking to attain or retain ISO/IEC 17025 accreditation. When assessors evaluate a laboratory’s uncertainty budgets, they commonly look […]
by Jerry Eldred The need for accurate torque measurement spans technologies and industries from missions to Mars, to installing lug nuts on your old pickup truck. When torque is correct, it makes us safer, and […]
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