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JJG 1057-2010 English PDF

US$529.00 · In stock
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JJG 1057-2010: Verification regulation of TV signal field strength meter
Status: Valid

Standard ID	Contents [version]	USD	STEP2	[PDF] delivered in	Standard Title (Description)	Status	PDF
JJG 1057-2010	English	529	Add to Cart	4 days [Need to translate]	Verification regulation of TV signal field strength meter	Valid	JJG 1057-2010

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Basic data

Standard ID	JJG 1057-2010 (JJG1057-2010)
Description (Translated English)	Verification regulation of TV signal field strength meter
Sector / Industry	Metrology & Measurement Industry Standard
Classification of Chinese Standard	A56
Classification of International Standard	17.220
Word Count Estimation	23,280
Date of Issue	2010-03-02
Date of Implementation	2010-06-02
Regulation (derived from)	AQSIQ Announcement No. 23 of 2010
Issuing agency(ies)	General Administration of Quality Supervision, Inspection and Quarantine
Summary	This standard applies to working frequency 48MHz ~ 862MHz TV signal field strength meter (also often referred to TV Signal Level Meter, or the TV level meter) of the initial verification, testing and use of follow-up inspection.

JJG 1057-2010: Verification regulation of TV signal field strength meter

---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 TV signal field strength meter State verification procedures People's Republic of China TV Signal Level Meter Issued on. 2010-03-02 2010-06-02 implementation The State Administration of Quality Supervision, Inspection and Quarantine released TV signal field strength meter verification procedures thMeter The regulations by the State Administration of Quality Supervision, Inspection and Quarantine approved on March 2, 2010, and from From June 2, 2010 into effect. Focal point. the National Radio Technical Commission metering Drafting units. China Institute of Metrology This procedure commissioned the National Radio Technical Commission responsible for the interpretation of measurement The drafters of the regulations. Ma Xiaoqing (China Institute of Metrology) Wuzhao Chun (China Institute of Metrology) Yang Zhijun (China Institute of Metrology)

1 Scope (1) 2 Overview (1) 3 metering performance requirements (1) 4 General Requirements (1) 4.1 appearance requirements (1) 4.2 work requirements (1) 5 control of measuring instruments (1) 5.1 test conditions (1) 5.2 test items and test methods (3) 5.3 Verification Results Processing (7) 5.4 test cycle (7) Appendix A test record sheet (8) Appendix B test certificate-page format (12) Appendix C test results in the notice page format (16) Appendix D PAL-D standard format television channel Table of Frequency Allocations adopted by China (17) TV signal field strength meter verification procedures

1 Scope

The order applies to the frequency of the television signal field strength meter 48MHz ~ 862MHz (also often called TV field Strong instrument, or a TV level meter) initial verification, subsequent verification and in-service inspection.

2 Overview

Level Meter for measuring television signals via radio frequency modulated television channel video/audio carrier signal level. through Often television signal received by the RF tuning detector amplification, analog meter or digital screen display part of its input Port impedance is 75Ω. Signal Level Meter is mainly used for TV cable television channel signal level measuring network, when connected to a radio frequency antenna When space radio reception field strength measurements, the measured TV signal level required by the antenna or antenna gain coefficient change Operators draw electric field strength.

3 metering performance requirements

3.1 Frequency range. 48MHz ~ 862MHz (TV channels. DS1 ~ DS56, Z1 ~ Z43); 3.2 Frequency Maximum permissible error. ± 10kHz; 3.3 Level Range. 30dBμV ~ 120dBμV; 3.4 level of the maximum permissible error. ± 3dB; 3.5 3dB bandwidth. 250kHz ~ 350kHz; 3.6 VSWR. ≤3.0 (75Ω).

4 General technical requirements

4.1 appearance requirements Instrument exterior structure intact, various buttons and switches work properly, the connector contact. To sign the instrument Seeking indicating instrument name and model number, manufacturer or trademark, date of manufacture, product number, all panel buttons and ports It should indicate their function. 4.2 work requirements Subject meter shall structural integrity, mechanical damage without affecting the normal operation of each key can be properly controlled. Built-in power supply Power supply or external power adapter input voltage selector is set for an agreement with the supply voltage used. Ensure that the AC or DC power supply Mode, when using a rechargeable battery, the battery capacity should be based on the time required to fully charge the battery. Power is turned on Source, the instrument should be able to be displayed properly powered and stability. Preheat the instrument before test usually takes 30 minutes or according to instructions Regulations.

5 control of measuring instruments

5.1 verification Conditions

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