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JJF 1725-2018 English PDF

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JJF 1725-2018: Calibration Specification for Pulse Distribution Amplifiers
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Basic data

Standard ID JJF 1725-2018 (JJF1725-2018)
Description (Translated English) Calibration Specification for Pulse Distribution Amplifiers
Sector / Industry Metrology & Measurement Industry Standard
Classification of Chinese Standard A57
Word Count Estimation 22,244
Date of Issue 2018-12-25
Date of Implementation 2019-03-25
Regulation (derived from) State Administration of Markets, Announcement No. 34 of 2018
Issuing agency(ies) State Administration for Market Regulation

JJF 1725-2018: Calibration Specification for Pulse Distribution Amplifiers

---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.
(Pulse Distribution Amplifier Calibration Specifications) National Metrology Technical Specification Pulse Distribution Amplifier Calibration Specifications Published on.2018-12-25 2019-03-25 implementation State Market Supervisory Administration released Pulse Distribution Amplifier Calibration Specifications Focal Point. National Time Frequency Measurement Technical Committee Main drafting unit. Beijing Radio Measurement and Testing Institute Participated in the drafting unit. Beijing Oriental Metrology and Testing Institute China Institute of Metrology This specification entrusts the National Time and Frequency Measurement Technical Committee to explain The main drafters of this specification. Yang Fan (Beijing Radio Measurement and Testing Institute) Yang Jun (Beijing Radio Measurement and Testing Institute) Participate in the drafters. Yan Dongliang (Beijing Radio Measurement and Testing Institute) Li Jun (Beijing Oriental Metrology and Testing Institute) Zhang Aimin (China Institute of Metrology) Liang Kun (China Institute of Metrology)

table of Contents

Introduction (II) 1 Scope (1) 2 References (1) 3 Terms and units of measurement (1) 3.1 Transmission delay (1) 3.2 Transmission delay consistency (1) 3.3 Jitter (1) 4 Overview (1) 5 Measurement characteristics (2) 5.1 Output amplitude (2) 5.2 rise time (2) 5.3 Transmission delay (2) 5.4 Transmission delay consistency (2) 5.5 Jitter (2) 6 Calibration conditions (2) 6.1 Environmental conditions (2) 6.2 Measurement standards and other equipment (2) 7 Calibration items and calibration methods (3) 7.1 Calibration Project (3) 7.2 Calibration method (3) 8 calibration result expression (5) 9 re-study interval (5) Appendix A Example of Measurement Uncertainty Evaluation (6) Appendix B Original Record Format (13) Appendix C Calibration Certificate (inside page) format (15)

Introduction

This specification is based on JJF 1071-2010 “Rules for the Preparation of National Metrology Calibration Specifications”. This specification is the first release. Pulse Distribution Amplifier Calibration Specifications

1 Scope

This specification applies to the calibration of pulse distribution amplifiers with a pulse period of 1 s.

2 reference files

This specification refers to the following documents. ITU-TG.701.1989 Digital transmission and multiplexing vocabulary and pulse code modulation terminology [Vocabularyof Digitaltransmissionandmultiplexing,andpulsecodemodulation (PCM)terms] For dated references, only dated versions apply to this specification; undated quotations The latest version (including all revisions) applies to this specification.

3 terms and units of measure

3.1 transmission delay propagationtimedelay The time difference between the pulse distribution amplifier output pulse signal and the input pulse signal, in nanoseconds (ns). 3.2 Transmission delay consistency propagationtimedelayinconsistencyofchannels The difference between the maximum transmission delay and the minimum transmission delay of each channel of the pulse distribution amplifier, in nanoseconds (ns). 3.3 jitter jitter The short-term instability of a pulse with respect to the reference pulse edge. Jitter is divided into phase jitter, period jitter, and period Inter-jitter, this specification refers specifically to period jitter. The period jitter is the pulse signal and reference pulse output from the pulse distribution amplifier. The degree of deviation of the rush is expressed by the experimental standard deviation.

4 Overview

Pulse distribution amplifier is a device that distributes one pulse signal into multiple outputs, which is widely used in time and frequency systems. A system, time frequency measurement, etc. The pulse distribution amplifier is mainly composed of a signal distribution module and a level driving module. After a pulse signal enters the pulse distribution amplifier, it is distributed into multiple channels via the signal distribution module, and then driven through the level. Module output. Figure 1 is a block diagram showing the basic operation of a pulse distribution amplifier. Figure 1 Basic operation block diagram of the pulse distribution amplifier

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