Articles Published in Cal Lab Magazine
by Michael Lombardi Volume 3:1, Jan-Feb 1996 This article is part I of a two-part series on frequency calibrations. Part I introduces the topic of frequency calibrations, discusses the specifications involved, and describes the different […]
by Bernard Morris, John D. Yewin Volume 2:5, Sep-Oct 1995 Since developing the world’s first automatic resistance bridge in 1966, Automatic Systems Laboratories (ASL), has spent over 25 years developing AC thermometry bridges for use […]
by Edward L. Peterson and Mark McElroy Volume 2:6, Nov-Dec 1995 Compliance to international quality standards (ISO 9000) has heightened awareness of calibration and traceability. This emphasis has focused more attention on the fields of […]
by Ronald Ginley Volume 6:5, Sep-Oct 1999 Verification of Vector Network Analyzers (VNAs) is very important to the measurement process as well as to establish confidence in the uncertainty of the system. This paper presents […]
by Patrick J. Abbott The International Prototype Kilogram (IPK) realized the unit of mass in the International System of Units (SI) for over 130 years. On May 20, 2019, all fundamental quantities of the SI […]
by Brian Walker Calibration methodology for Vector Network Analysis has evolved over the years. The first calibrations were simple normalizations. Later, with a better understanding of the systematic errors a calibration methodology involving the measurements […]
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 Joseph P. Fuehne, Ph.D., P.E. The Purdue Polytechnic Institute in Columbus utilizes metrology tools with targeted measurement artifacts, which may be 3-D printed or machined, to facilitate learning and provide opportunities to demonstrate competency […]
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