JJG 433-2004 English PDF

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JJG 433-2004: Verification Regulation of Phase Comparators
Status: Valid

JJG 433: Historical versions

Standard ID	USD	BUY PDF	Lead-Days	Standard Title (Description)	Status
JJG 433-2004	299	Add to Cart	3 days	Verification Regulation of Phase Comparators	Valid
JJG 433-1986	399	Add to Cart	3 days	Verification Regulation of Phase Comparator	Obsolete

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Basic data

Standard ID: JJG 433-2004 (JJG433-2004)
Description (Translated English): Verification Regulation of Phase Comparators
Sector / Industry: Metrology & Measurement Industry Standard
Classification of Chinese Standard: A56
Classification of International Standard: 17.080
Word Count Estimation: 11,125
Date of Issue: 2004-11-09
Date of Implementation: 2005-05-09
Older Standard (superseded by this standard): JJG 433-1986
Quoted Standard: 2004 technical regulations issued by national metrology (industrial measurement 2005 Volume 15, Issue 1)
Regulation (derived from): 2004 technical regulations issued by national metrology (industrial measurement 2005 Volume 15, Issue 1)
Issuing agency(ies): State Administration of Quality Supervision, Inspection and Quarantine
Summary: This standard applies to linear-phase meter than the initial verification and follow-up test and use test.

JJG 433-2004: Verification Regulation of Phase Comparators

---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.
Verification Regulation of Phase Comparators National Metrology Verification Regulations of the People's Republic Ratio comparator Released on November 11,.2004 2005-05-09 implementation The General Administration of Quality Supervision, Inspection and Quarantine issued Specific phase calibration procedure ofPhaseComp Replace JJG 433-1986 This regulation was approved by the General Administration of Quality Supervision, Inspection and Quarantine on November 9,.2004, and It will take effect on May 9,.2005. Focal Point. National Time Frequency Measurement Technical Committee Main drafting unit. 203 of the Second Academy of Aerospace Science and Industry Participated in the drafting unit. China Institute of Metrology This procedure entrusts the National Time Frequency Measurement Technical Committee to explain The main drafters of this procedure. Xu Yueqing (2003 of the Second Academy of Aerospace Science and Industry Corporation) Jiang Dongwei (After the Second Academy of Aerospace Science and Industry Group) Participate in the drafters. Zhao Liangwei (China Institute of Metrology)

table of Contents

1 Scope (1) 2 Overview (1) 3 Metrological performance requirements (1) 3.1 Frequency range (1) 3.2 Input sensitivity (1) 3.3 Phase Drift (1) 3.4 Nonlinear (1) 3.5 Phase Detection Dead Zone (1) 4 General technical requirements (1) 4.1 Appearance and logo (1) 4.2 Other requirements (1) 5 measuring instrument control (1) 5.1 Verification conditions (1) 5.2 Verification items and verification methods (2) 5.3 Processing of verification results (4) 5.4 Verification cycle (4) Appendix A Verification Certificate and Verification Result Notice (inside page) format (5) Specific phase calibration procedure

1 Scope

This procedure applies to the first verification and subsequent verification and in-use inspection of linear phase contrast instruments.

2 Overview

Linear phase contrast meter is a special equipment for accurate measurement of time and frequency. The basic principle is to use the phase detector to make the nominal frequency the same. The phase difference between the two input signals becomes a voltage, and the voltage change is recorded by a tape or digital recorder. Observing one The amount of change in phase difference during the period of time can be derived from the average frequency deviation of the period of time. Linear phase ratio meter (hereinafter referred to as ratio Phase meter) is used to measure the frequency accuracy, frequency drift rate and frequency stability of various atomic frequency standards and high-stability crystal oscillators. Degree.

3 Metrological performance requirements

3.1 Frequency range. 100kHz~10MHz 3.2 Input sensitivity. 300mV (rms) (input impedance 50Ω) 3.3 Phase drift (for 5MHz). ≤ 4ns (observation time 1 day) 3.4 Nonlinear (for 5MHz). ≤ 4ns 3.5 phase deadband (for 5MHz). ≤10ns

4 General technical requirements

4.1 Appearance and logo The front or rear panel of the phase contrast meter should have the name of the manufacturer, the instrument model, the factory number, the mark and the electricity. Source requirements. 4.2 Other requirements 4.2.1 The phase button, input port and control port of the phase comparator should have a clear mark. 4.2.2 The first phase of the phase measuring instrument shall be accompanied by the instruction manual, and the subsequent verification shall be accompanied by the instruction manual and the verification of the last verification. certificate.

5 measuring instrument control

Includes initial verification, follow-up verification, and in-use inspection. 5.1 Verification conditions 5.1.1 Environmental conditions 5.1.1.1 Temperature. It can be at any point from 10 °C to 30 °C, but the temperature fluctuation during the test should not exceed ±2 °C 5.1.1.2 Relative humidity. ≤80% 5.1.1.3 AC power supply voltage. 220 (1±10%) V, (50±1) Hz 5.1.1.4 There are no electromagnetic interference or mechanical vibrations affecting the normal operation of the instrument. ......

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