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JJF 1442-2014 English PDF

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JJF 1442-2014: Calibration Specification for Broadband Coaxial Noise Generators
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJF 1442-2014	English	369	Add to Cart	3 days [Need to translate]	Calibration Specification for Broadband Coaxial Noise Generators	Valid	JJF 1442-2014

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Basic data

Standard ID	JJF 1442-2014 (JJF1442-2014)
Description (Translated English)	Calibration Specification for Broadband Coaxial Noise Generators
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A56
Classification of International Standard	17.220
Word Count Estimation	16,149
Date of Issue	1/23/2014
Date of Implementation	4/23/2014
Quoted Standard	JJF 1188-2008
Regulation (derived from)	?AQSIQ Announcement 2014 No. 10
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This Standard specifies the broadband coaxial noise generator (hereinafter referred to as noise generator) calibration project, calibration conditions, calibration method, calibration results expressed recal time interval for the frequency range of 10MHz-

JJF 1442-2014: Calibration Specification for Broadband Coaxial Noise Generators

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Calibration Specification for Broadband Coaxial Noise Generators People's Republic of China National Metrology Technical Specifications Broadband coaxial noise generator calibration specification Issued on. 2014-01-23 2014-04-23 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Broadband coaxial noise generator calibration specification NoiseGenerators Focal point. the National Radio Technical Commission metering The main drafting units. Telecom Science and Technology Institute of the Fourth China Institute of Metrology Shanghai communications metering station Participated in the drafting unit. China North Industries Group 206 Research Institute This specification commissioned the National Radio Technical Commission responsible for the interpretation of measurement The main drafters of this specification. Li Yunfeng (fourth Telecom Science and Technology Institute) Liang Weijun (China Institute of Metrology) Lee Pil Germany (Shanghai communications metering station) Drafters participate. Kang Jing (fourth Telecom Science and Technology Institute) Solutions Chun-feng (fourth Telecom Science and Technology Institute) Zhao Lei (China North Industries Group 206 Research Institute) Multi Zhao Fei (China North Industries Group 206 Research Institute)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 terminology and units of measurement (1) 3.1 excess noise ratio (1) 3.2 Y coefficient (1) 4 Overview (1) 5 Metrological characteristics (2) Calibration Condition 6 (2) 6.1 environmental conditions (2) 6.2 standards and other measuring equipment (2) 7 calibration items and calibration methods (2) 7.1 calibration items (2) 7.2 Calibration Method (2) 8 calibration results expression (4) 9 Recalibration interval (4) Appendix A calibration record table format (5) Appendix B Calibration Certificate page format (6) Appendix C calibration uncertainty assessment (7)

Introduction

This specification based JJF 1071 "National Calibration Specifications writing rules" preparation, terminology and measurement uncertainty Evaluation follow JJF 1001 "common measurement terms and definitions" and JJF 1059.1 "Measurement Uncertainty Table Show "two documents. This specification relates broadband coaxial noise generator excess noise ratio (ENR) and the port voltage standing wave ratio (VSWR) Calibration parameters, Y-factor method calibrated excess noise ratio, with a network analyzer calibration voltage standing wave ratio. This specification is the first release. Broadband coaxial noise generator calibration specification

1 Scope

This specification defines broadband coaxial noise generator (hereinafter referred to as noise generator) calibration projects, calibration strip Pieces, calibration method, the calibration results expressed recheck interval, etc., for a frequency range of 10MHz ~ 40GHz Calibrated noise generator. 2. References This specification refers to the following documents. JJF 1188-2008 radio measurement terminology and definitions For dated references, only the dated edition applies to this specification; undated reference documents Member, the latest edition (including any amendments) applies to this specification.

3 terminology and units of measurement

3.1 excess noise ratio ENR. excessnoiseratio Noise generator output noise temperature T standard noise temperature T0 difference divided by the standard noise temperature T0, common Expressed in decibels, as shown in Equation (1). ENR = 10lg T-T0 T0 (1) Where. ENR --- excess noise ratio, dB; T --- noise generator output noise temperature, K; T0 --- standard noise temperature, T0 = 290K. 3.2 Y coefficient Ycoefficient When the input of two-port network owned by two successively input noise power output of the network obtained two phases It should be funded by noise power ratio, such as (2) shown in Equation. Y = N2 N1 (2) Where. N1 --- first output of the network was funded by the noise power, W; N2 --- output of second network was funded by the noise power, W.

4 Overview

Noise generated by the noise generator and matching network device configuration, wherein the common noise generating device avalanche diode Tubes, gas discharge tubes and the like. Noise generator is mainly used for measuring amplifier, mixer, receiver and other components and equipment Noise figure of the device, its ultra-noise ratio required is given by calibration.

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