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JJF 1845-2020 English PDF

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JJF 1845-2020: Calibration Specification for Discontinuous Interference Analyzers
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Basic data

Standard ID JJF 1845-2020 (JJF1845-2020)
Description (Translated English) Calibration Specification for Discontinuous Interference Analyzers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A56
Word Count Estimation 23,256
Date of Issue 2020-07-02
Date of Implementation 2021-01-02
Regulation (derived from) Announcement No. 29 (2020) of the State Administration for Market Regulation
Issuing agency(ies) State Administration for Market Regulation

JJF 1845-2020: Calibration Specification for Discontinuous Interference Analyzers

---This is a DRAFT version for illustration, not a final translation. Full copy of true-PDF in English version (including equations, symbols, images, flow-chart, tables, and figures etc.) will be manually/carefully translated upon your order.
Calibration Specification for Discontinuous Interference Analyzers National Metrology Technical Specifications of the People's Republic of China Calibration specification for intermittent interference analyzer 2020-07-02 released 2021-01-02 implementation Issued by the State Administration for Market Regulation Calibration specification for intermittent interference analyzer Focal point. National Radio Metrology Technical Committee Main drafting unit. Guangdong Institute of Metrology Dongguan Institute of Metrology, Guangdong Academy of Metrology China Institute of Metrology This specification entrusts the National Radio Measurement Technical Committee to be responsible for the interpretation The main drafters of this specification. Chen Yisheng (Guangdong Institute of Metrology) Zhang Nan (Dongguan Institute of Metrology, Guangdong Academy of Metrology) Kong Yuling (Chinese Academy of Metrology) Participating drafters. Li Xingyun (Dongguan Metrology Institute, Guangdong Academy of Metrology) Liu Wengang (Guangdong Institute of Metrology) Zhang Hong (Guangdong Institute of Metrology) Li Yongtao (Dongguan Institute of Metrology, Guangdong Academy of Metrology)

table of Contents

Introduction (Ⅱ) 1 Scope (1) 2 Reference documents (1) 3 Terms and units of measurement (1) 3.1 Click (1) 4 Overview (1) 5 Measurement characteristics (2) 5.1 Center frequency(2) 5.2 Level indication (2) 5.3 6dB bandwidth(2) 5.4 Impulse response characteristics (2) 5.5 Intermittent interference characteristics (2) 6 Calibration conditions (4) 6.1 Environmental conditions (4) 6.2 Measurement standards and other equipment (4) 7 Calibration items and calibration methods (5) 7.1 Appearance and working normality inspection (5) 7.2 Center frequency(5) 7.3 Level indication (6) 7.4 6dB bandwidth(6) 7.5 Impulse response characteristics (6) 7.6 Intermittent interference characteristics (7) 8 Calibration results (7) 9 Re-calibration interval (8) Appendix A Original Record Format (9) Appendix B. Internal page format of calibration certificate (12) Appendix C Examples of Uncertainty Evaluation (15)

Introduction

This specification is based on JJF 1071-2010 "Rules for the Compilation of National Metrology and Calibration Specifications", JJF 1059.1-2012 "Measurement "Evaluation and Expression of Uncertainty of Measurement". This specification refers to the following documents. ---JJF 1144-2006 "Electromagnetic Disturbance Measurement Receiver Calibration Specification"; ---GB 4343.1-2018 "Electromagnetic compatibility requirements for household appliances, electric tools and similar appliances Part 1 Points. Launch; ---GB/T 6113.101-2016 "Radio disturbance and immunity measurement equipment and measurement method specification 1-1 Part. Measurement Equipment for Radio Disturbance and Immunity Measurement Equipment; ---CISPR14-1.2016 "Electromagnetic Compatibility Requirements for Household Appliances, Electric Tools and Similar Appliances Part 1 Minutes. Launch (Electromagneticcompatibility-Requirementsforhouseholdappliances, electrictoolsandsimilarapparatus-Part 1.Emission); ---CISPR16-1-1.2019 "Specifications for Radio Disturbance and Immunity Measurement Equipment and Methods of Measurement, No. 1-1 Part. Measurement Equipment for Radio Disturbance and Immunity Measurement Equipment (Specificationforradiodisturbance andimmunitymeasuringapparatusandmethods-Part 1-1.Radiodisturbanceandim- munitymeasuringapparatus-Measuringapparatus). This specification is released for the first time. Calibration specification for intermittent interference analyzer

1 Scope

This specification applies to the calibration of intermittent interference analyzers with a center frequency range of 150kHz~30MHz.

2 Reference documents

The following documents are cited in this specification. JJF 1144-2006 Electromagnetic Disturbance Measurement Receiver Calibration Specification GB 4343.1-2018 Electromagnetic compatibility requirements for household appliances, electric tools and similar appliances Part 1. emission Part 1-1 of GB/T 6113.101-2016 Radio Disturbance and Immunity Measurement Equipment and Measurement Methods Specification Sub. radio disturbance and immunity measuring equipment measuring equipment CISPR14-1.2016 Electromagnetic compatibility requirements for household appliances, electric tools and similar appliances Part 1. Launch (Electromagneticcompatibility-Requirementsforhousehold appliances, electric toolsandsimilarapparatus-Part 1.Emission) CISPR16-1-1.2019 Part 1-1 of Specification for Radio Disturbance and Immunity Measurement Equipment and Measurement Methods Sub. Radio disturbance and immunity measurement equipment measurement equipment (Specificationforradiodisturbanceand immunitymeasuringapparatusandmethods-Part 1-1.Radiodisturbanceandimmunity measuringapparatus-Measuringapparatus) For dated reference documents, only the dated version applies to this specification; for all undated references The latest version (including all amendments) is applicable to this specification.

3 Terms and units of measurement

The following terms and definitions apply to this specification. 3.1 Click A type of harassment, the amplitude exceeds the continuous harassment peak limit, the duration is not greater than.200ms, and the latter harassment The harassment is at least.200ms away from the previous harassment. The duration is determined by the signal exceeding the IF reference level of the measuring receiver. A click may contain many pulses. In this case, the relevant time is from the first pulse to the last. The time at which the next pulse ends. Note. Under certain conditions, certain types of harassment are not included in this definition (see GB 4343.1).

4 overview

Intermittent interference analyzer (also known as intermittent disturbance analyzer, click sound analyzer) can automatically assess intermittent disturbance (Hereinafter referred to as "click"), the amplitude, incidence and duration are for household appliances, electric heating appliances, and power tools. It is a special measuring instrument for analyzing and judging intermittent harassment and similar equipment. Intermittent interference analyzer is connected by electromagnetic disturbance measurement It is composed of receiving and time judging circuit and counting circuit.

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