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JJG 841-2012 English PDF

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JJG 841-2012: Verification Regulation of Microwave Frequency Counters
Status: Valid

JJG 841: Evolution and historical versions

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 841-2012	English	419	Add to Cart	3 days [Need to translate]	Verification Regulation of Microwave Frequency Counters	Valid	JJG 841-2012
JJG 841-1993	English	239	Add to Cart	2 days [Need to translate]	Verification Regulation of Microwave Frequency Couters	Obsolete	JJG 841-1993

PDF similar to JJG 841-2012

Standard similar to JJG 841-2012

GB/T 3222.1 JJF 1234 JJF 1396 JJG 802 JJG 238 JJG 840

Basic data

Standard ID	JJG 841-2012 (JJG841-2012)
Description (Translated English)	Verification Regulation of Microwave Frequency Counters
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A57
Classification of International Standard	17.080
Word Count Estimation	18,126
Older Standard (superseded by this standard)	JJG 841-1993
Quoted Standard	JJG 180-2002
Regulation (derived from)	AQSIQ Announcement No. 45 of 2012
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to the frequency range of 100kHz ~ 40GHz microwave frequency counters and other instruments in the microwave frequency counter function module initial verification, testing and use of follow-up checks.

JJG 841-2012: Verification Regulation of Microwave Frequency Counters

---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 Microwave Frequency Counters State verification procedures People's Republic of China Microwave frequency counter Issued on. 2012-03-20 2012-09-20 implementation The State Administration of Quality Supervision, Inspection and Quarantine released Microwave frequency counter test procedures Counters Replacing JJG 841-1993 Focal point. the National Commission on Time and Frequency Measurement Technology Main drafting unit. Shanghai Institute of Measurement and Testing China Testing Technology Research Institute Participated in the drafting. Instrument Co., Ltd. Nanjing Telecommunications Union The national time and frequency measurement procedures commissioned technical committee responsible for the interpretation The main drafters of this procedure. Dong Lin (Shanghai Institute of Measurement and Testing) Guo Chunmei (China Testing Technology Research Institute) Drafters participate. Chen Yajun (Nanjing Telecommunications Union Instrument Co., Ltd.) Liu Qihua (Shanghai Institute of Measurement and Testing) Hu Lizhi (Shanghai Institute of Measurement and Testing)

Introduction (Ⅱ) 1 Scope (1) 2. References (1) 3 Terms (1) 3.1 Input sensitivity (1) 3.2 Maximum Input Level (1) 4 Overview (1) 5 metering performance requirements (1) 5.1 Input characteristics (1) 5.2 Frequency measurement error (2) 5.3 Built-in quartz crystal oscillator (2) 6 General Requirements (2) 6.1 Appearance (2) 6.2 of the work (2) 7 control of measuring instruments (2) 7.1 verification Conditions (2) 7.2 test items and test methods (3) 7.3 Verification Results Processing (6) 7.4 test cycle (6) Appendix A test page original record data format (7) B test certificates/test results in the notice page format Shape Appendix (9)

Introduction

JJG 841 "microwave frequency counter" is the revised version of JJG 841-1993 conducted. And JJG 841-1993 Compared to, in addition to editorial changes outside the main technical changes are as follows. --- Increase the frequency measurement limit (see Chapter 1); --- New introduction, the term content (see Introduction and Chapter 3); --- Complement the performance requirements for content measurement (see Chapter 5); --- Refine and clarify the test conditions (see 7.1); --- Provisions of the applicable conditions of different test methods, eliminating synthetic, frequency converters, modular signal attenuator Generating method and splitters method (see 7.2.2.3); --- New frequency measurement error test items and test methods (see 5.2 and 7.2.2.4); --- Test new original record data page format (see Appendix A), calibration certificate/test results within the page frame notice Type style (see Appendix B). JJG 841-1993 for the first release. Microwave frequency counter test procedures

1 Scope

The order applies to the measurement frequency range of 100kHz ~ 40GHz microwave frequency counter and other instruments The microwave frequency counting function module initial verification, use and subsequent verification check. 2. References JJG 180-2002 "electronic measuring instruments within the quartz oscillator" For dated references, only the dated edition applies to this procedure; undated reference documents Member, the latest edition (including any amendments) applies to this procedure.

3 Terms

3.1 Input sensitivity inputsensitivity Microwave frequency counter works fine and the reading is stable, the measured signal is accurate minimum required level value. 3.2 Maximum input level maximuminputlevel Microwave frequency counter works fine and the reading is stable, the measured signal is accurate can withstand the maximum level value.

4 Overview

Microwave frequency counter frequency measurement refers to the upper reaches of the microwave frequency counter, also known as the microwave frequency counter. it Usually down-conversion technology, microprocessor controlled by the frequency of the measured microwave signals can be converted into a counter Direct measurement of the frequency, widely used in national defense, scientific research, universities and military departments measuring microwave, millimeter wave band power Signal frequency.

5 metering performance requirements

5.1 Input characteristics Input characteristics are shown in Table 1. Table 1 Input characteristics Technical Specifications Bands Frequency range 100kHz ~ 1GHz (1 ~ 18) GHz (18 ~ 26.5) GHz (26.5 ~ 40) GHz Input sensitivity (20 ~ 300) mV (-33 ~ -20) dBm (-29 ~ -17) dBm (-23 ~ -15) dBm The maximum input level (2 ~ 7) V (5 ~ 13) dBm (7 ~ 13) dBm (7 ~ 13) dBm BNC input connector type N-type socket/SMA and other 3.5mm/K type, etc. 2.4mm/K type, etc. Note. The band division and technical specifications to the product specification shall prevail.

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