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    • P1139/D18, May 2022 - APPROVED DRAFT
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Full Description

Scope

This standard covers the fundamental quantities for describing random instabilities of importance to frequency and time metrology. Quantities covered include frequency, amplitude, and phase instabilities; their power spectral densities; and their time-domain variances and deviations. In addition, recommendations are made for the reporting of measurements of such instabilities, especially about the recording of experimental parameters, experimental conditions, and calculation techniques. The document includes appendices covering: basic concepts and definitions; time prediction; random and systematic uncertainties; confidence limits when estimating instabilities from a finite data set; translation between the frequency domain and time domain instability measures; and an extensive bibliography of the relevant literature.

Purpose

This standard defines and formalizes the techniques and physical quantities used to measure and characterize frequency, phase, and amplitude instabilities in time and frequency instruments and systems.

Abstract

Revision Standard - Active - Draft. Methods of describing random instabilities of importance to frequency and time metrology are covered. Quantities covered include frequency, amplitude, and phase instabilities; spectral densities of frequency, amplitude, and phase fluctuations; and time-domain deviations of frequency fluctuations. In addition, recommendations are made for the reporting of measurements of frequency, amplitude, and phase instabilities, especially in regard to the recording of experimental parameters, experimental conditions, and calculation techniques.