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JJF 1759-2019 English PDF

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JJF 1759-2019: Calibration Specification for Attenuation Calibrators
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1759-2019	English	369	Add to Cart	4 days [Need to translate]	Calibration Specification for Attenuation Calibrators	Valid	JJF 1759-2019

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Basic data

Standard ID	JJF 1759-2019 (JJF1759-2019)
Description (Translated English)	Calibration Specification for Attenuation Calibrators
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A56
Classification of International Standard	17.220
Word Count Estimation	16,119
Date of Issue	2019
Date of Implementation	2020-03-27
Issuing agency(ies)	State Administration for Market Regulation

JJF 1759-2019: Calibration Specification for Attenuation Calibrators

---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 Attenuation Calibrators National Measurement Technical Specification of the People's Republic of China Calibration specifications for attenuation calibration devices 2019-09-27 release 2020-03-27 Implementation Issued by the State Administration of Market Supervision and Administration Calibration specifications for attenuation calibration devices Replace JJG424-1986 Focal point. National Radio Measurement Technical Committee Main drafting unit. 203 Institute of the Second Academy of China Aerospace Science and Industry Corporation Participated in the drafting unit. China Academy of Metrology This specification is entrusted to the National Radio Measurement Technical Committee for interpretation The main drafters of this specification. Xu Baoli (203 Institute of the Second Academy of China Aerospace Science and Industry Corporation) Zhang Yue (203 Institute of the Second Academy of China Aerospace Science and Industry Corporation) Li Fang (203 Institute of the Second Academy of China Aerospace Science and Industry Corporation) Participating drafters. Liang Weijun (Chinese Academy of Metrology) Jia Chao (Chinese Academy of Metrology)

Introduction (Ⅱ) 1 Scope (1) 2 Overview (1) 3 Measurement characteristics (1) 4 Calibration conditions (1) 5 Calibration items and calibration methods (2) 5.1 Calibration items (2) 5.2 Calibration method (2) 6 Expression of calibration results (2) 7 Recalibration time interval (3) Appendix A Original Record Format (4) Appendix B. Internal page format of the calibration certificate (5) Appendix C Examples of Uncertainty Evaluation of Calibration Results of Main Items (6)

Introduction

This specification is based on JJF 1071-2010 "Rules for Compiling National Measurement and Calibration Specifications" and JJF 1059.1-2012 Compilation of "Measurement Uncertainty Evaluation and Representation". This specification is for JJG424-1986 "TO7 (TO7A) type attenuation The main changes in the revision of the Calibration Regulations for Calibration Devices are as follows. --- The scope of application of the original regulations was revised, and the original only applies to TO7 (TO7A), TO6, VM-3 It is adapted to the current general attenuation calibration device, and the name of the specification is changed to "Attenuation Calibration Device Calibration Specification"; --- The frequency range of the original regulations has been extended; --- The range of standard instruments used for verification in the original regulations was changed. The previous releases of this specification are. --- JJG424-1986. Calibration specifications for attenuation calibration devices

1 Scope

This specification applies to the calibration of attenuation calibration devices in the frequency range of 100kHz to 50GHz.

2 Overview

There are many types of attenuation calibration devices, and their measurement principles mainly use alternative methods and measurement receiver methods, Now the measurement of attenuation. Attenuation calibration device is a commonly used equipment in radio measurement, used to measure various types of attenuation Minus.

3 Measurement characteristics

a) Attenuation. 0dB ~ 100dB (100kHz ~ 18GHz); 0dB ~ 80dB (18GHz ~ 50GHz); b) Maximum allowable error. ± (0.02dB 0.002 × A) (A. 0dB ~ 80dB); ± 0.30dB (90dB), ± 0.40dB (100dB).

4 Calibration conditions

4.1 Environmental conditions a) Ambient temperature. 23 ℃ ± 5 ℃; b) Relative humidity. ≤80%; c) Power requirements. 220V ± 11V, 50Hz ± 1Hz; d) Others. There are no electromagnetic interference and mechanical vibrations that affect the normal operation of the instrument. 4.2 Calibration equipment 4.2.1 Standard attenuator a) Frequency range. 100kHz ~ 50GHz; b) Attenuation. 0dB ~ 100dB (100kHz ~ 18GHz), 0dB ~ 80dB (18GHz ~ 50GHz); c) Uncertainty. 0.01dB ~ 0.13dB (k = 2). 4.2.2 Signal generator a) Frequency range. 100kHz ~ 50GHz; b) Level range. -40dBm ~ 10dBm; With time base input and output functions. 4.2.3 Fixed attenuator a) Frequency range. 100kHz ~ 50GHz; b) Attenuation. 6dB/10dB; c) Voltage standing wave ratio. ≤1.1 (100kHz ~ 18GHz); ≤1.2 (18GHz ~ 40GHz); ≤1.25

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