There is a global need to standardize the terms and the test and computational methods that are used to describe and/or measure the parameters that characterize and define the performance of devices that generate signals and subsequently measure and analyze the waveforms acquired of those signals. This standardization is essential for accurate, reproducible, reliable, and communicable characterization of the performance of these devices, which supports technology and product advancement, product comparison and performance tracking, and device calibration and traceability. Users of the devices need to unambiguously specify the device performance required for particular applications. Manufacturers need to unambiguously state the performance of their devices (e.g., instruments, components, etc.). Metrology facilities need to perform calibrations with well-defined methods to produce reliable data expressed in clear terms. Measurement instruments need to acquire data with well-defined methods and present their results clearly. Technical Committee 10 (TC-10), the Waveform Generation, Measurement, and Analysis Committee of the IEEE Instrumentation and Measurement (I&M) Society, develops documentary standards to address these needs. The TC-10 comprises an international group of electronics engineers, mathematicians, professors and physicists with representatives from national metrology laboratories, national science laboratories, component manufacturers, the test instrumentation industry, academia, and end users. The published standards developed and maintained by the TC10 include: IEEE Std 181-2011, “Standard on Transitions, Pulses, and Related Waveforms”; IEEE Std 1057-2017, “Standard for Digitizing Waveform Recorders”; IEEE Std 1241-2010, “Standard for Terminology and Test Methods for Analog-to-Digital Converters”; IEEE Std 1658-2011, “Standard for Terminology and Test Methods for Digital-to-Analog Converters”; and the IEEE Std 1696-2013, “Standard for Terminology and Test Methods for Circuit Probes”. In development is the IEEE Draft Std. P2414 "Draft Standard for Jitter and Phase Noise". The status of these standards are described herein.

Active power is not carried solely by the fundamental component (either dc or ac) especially for highly distorted systems, as electrified railways. The paper proposes two indexes and a preliminary assessment of the relevance of harmonic active power terms. Results are shown for three major railway systems architectures (3 kV dc, 2 × 25 kV 50 Hz and 15 kV 16.7 Hz) using experimental pantograph voltage and current. Harmonic power terms are relevant for the estimate of energy consumption especially for ac systems rather than dc, with some significant situations especially for 16.7 Hz systems.

This paper presents a study focused on the equivalent parameters of an inductive current transformer for medium voltage purposes. In particular, its equivalent parameters behaviour has been assessed by varying both the temperature and the working conditions (current and voltage). Preliminary results provide interesting “calibration” curves which may be used during the transformer modelling.

We present an extended study on the uncertainty in resonant measurements. The uncertainty of the resonant frequency and quality factor was estimated. The effect of the use of uncalibrated resonant curve on uncertainty was extensively studied. For the uncalibrated data the systematic contribution to uncertainty was determined.

The kilogram, currently defined by the mass of a material artifact, the International Prototype of the Kilogram, will be defined in terms of a fundamental nature of constant, the Planck constant, ensuring long-term stability of the SI mass unit and enabling traceability from more than one source. Kibble balance experiments offer an effective primary realization method for the kilogram based on the value of Planck constant. Kibble Balance apparatus operating at National Metrology Institute of Turkey is designed with a stationary coil and an oscillating magnet. In contradistinction to traditional moving coil Kibble balance experiments, external magnetic field brings an asymmetry between the Ampere’s law of force and the Faraday’s law of induction in moving magnet experiments. In this paper, we develop a method based on the external magnetic flux density difference measurements in vertical direction to take into account the effect of the external magnetic field on the realization of kilogram. The proposed model in this approach fits well with the data such that the kilogram realization requirement is met within the accuracy of the measuring instrument.