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GB/T 25471-2010: Measuring methods for electromagnetic shielding effectiveness of coating
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| Standard ID | Contents [version] | USD | STEP2 | [PDF] delivered in | Standard Title (Description) | Status | PDF |
| GB/T 25471-2010 | English | 419 |
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Measuring methods for electromagnetic shielding effectiveness of coating
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GB/T 25471-2010
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Basic data | Standard ID | GB/T 25471-2010 (GB/T25471-2010) | | Description (Translated English) | Measuring methods for electromagnetic shielding effectiveness of coating | | Sector / Industry | National Standard (Recommended) | | Classification of Chinese Standard | N10 | | Classification of International Standard | 33.100; 17.220 | | Word Count Estimation | 18,171 | | Date of Issue | 2010-12-01 | | Date of Implementation | 2011-05-01 | | Quoted Standard | GB/T 4365-2003; GB/T 6113.101; IEC 61000-4-3-2008 | | Regulation (derived from) | Announcement of Newly Approved National Standards No. 9, 2010 (No. 164 overall) | | Issuing agency(ies) | General Administration of Quality Supervision, Inspection and Quarantine of the People's Republic of China, Standardization Administration of the People's Republic of China | | Summary | This standard specifies the flat plane wave electromagnetic shielding paint for shielding effectiveness measurement method. This standard specifies the following: test equipment, test samples, methods of measurement, measurement procedures. This standard applies to the electromagnetic shielding paint for a plane electromagnetic wave shielding effectiveness measurement, also applies to an electromagnetic shielding effect of the coating, the coating material and the conductive film and other flat shielding effectiveness measurements. This standard specifies test methods do not apply to cable or connector. The purpose of this standard is to develop a common and repetitive with the basic measurement method to evaluate electromagnetic shielding paint flat shielding effectiveness. | GB/T 25471-2010: Measuring methods for electromagnetic shielding effectiveness of coating---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.
Measuring methods for electromagnetic shielding effectiveness of coating
ICS 33.100; 17.220
N10
National Standards of People's Republic of China
Electromagnetic shielding paint shielding effectiveness measurement method
Issued on. 2010-12-01
2011-05-01 implementation
Administration of Quality Supervision, Inspection and Quarantine of People's Republic of China
Standardization Administration of China released
Table of Contents
Introduction Ⅲ
1 Scope 1
2 Normative references 1
3 Terms and definitions
4 Overview 2
5 2 Test Equipment
Source 2 5.1
5.2 Measuring receivers 2
5.3 flange coaxial test apparatus 2
5.4 Spectrum Analyzer 3
5.5 Network Analyzer 3
5.6 Attenuator 3
5.7 cable and connector 3
PA 3 5.8
6 test samples (referred to as. Sample) 3
7 Test Method 4
7.1 Overview 4
7.2 signal source (tracking generator)/receiver measurements 4
7.3 signal source (tracking generator)/spectrum analyzer measurement method 5
7.4 network analyzer measurement method 6
8 measurement program 6
8.1 Instrument Preparation 6
8.2 Test Procedure 7
9 7 Report
Appendix A (informative) flanged coaxial test apparatus 8
A.1 flanged coaxial test equipment components and assembly 8
A.2 sample loading process 12
References 13
1 flange coaxial test means 3
2 reference sample and the sample load schematic diagram 4
Figure 3 reference sample and the sample size of the load 4
Figure 4 source (tracking generator)/receiver measurement connection diagram 5
5 source (tracking generator)/spectrum analysis meter connection method Figure 5
Figure 6. Network Analyzer Measurement connection 6
Figure A.1 member A, the conical part 8 of the center conductor
Figure A.2 part B, the pressure on the outer ring coaxial cavity 8
Figure A.3 member C, the center conductor of the radial part 9
Figure A.4 pressure plate member D, the center conductor 9
Figure A.5 member E, the center conductor support sheet 9
Figure A.6 component F, the outer edge of member coaxial cavity 10
Conical member Figure A.7 member G, external coaxial cavity 11
Figure A.8 assembly 11
Figure A.9 partial assembly drawing 12
Foreword
Appendix A of this standard is an informative annex.
The standard proposed by China Machinery Industry Federation.
This standard by the national industrial process measurement and control Standardization Technical Committee (SAC/TC124) centralized.
This standard is drafted by. Shanghai Institute of Industrial Automation Instrumentation.
Shanghai Automation Instrumentation System Inspection and Testing Institute, Shanghai Entry-Exit Inspection and Quarantine Bureau, Shanghai Material Research. the drafting of this standard to participate
The Shanghai Bell Alcatel.
The main drafters of this standard. Xu Jianping, Wang Ying, Hong Ji Ye, Zhang Xian, Li Minghua, Chen Nan, Maying Qi, Zhang Shunda.
Electromagnetic shielding paint shielding effectiveness measurement method
1 Scope
This standard specifies the flat plane for electromagnetic shielding paint electromagnetic shielding effectiveness measurement method.
This standard specifies the following.
---Test Equipment;
--- Test samples;
---Measurement methods;
--- Measurement program.
This standard applies to the measurement of electromagnetic shielding paint to the plane electromagnetic wave shielding effectiveness, but also for coating an electromagnetic shielding effect,
Shielding effectiveness measurement and the conductive coating film and other flat materials.
Test methods specified in this standard does not apply to cables or connectors.
The purpose of this standard is to develop a common and reproducible basic measurement method to evaluate the electromagnetic shielding paint flat screen
Shield effectiveness.
2 Normative references
The following documents contain provisions which, through reference in this standard and become the standard terms. For dated references, subsequent
Amendments (not including errata content) or revisions do not apply to this standard, however, encourage the parties to the agreement are based on research
Whether the latest versions of these documents. For undated reference documents, the latest versions apply to this standard.
GB/T 4365-2003 Electrotechnical terminology Electromagnetic compatibility (IEC 60050 (161).1990 A11997 A21998, IDT)
GB/T 6113.101 radio disturbance and immunity measuring apparatus and methods - Part 1-1. Radio disturbance and anti-
Interference measuring equipment measuring equipment (GB/T 6113.101-2008, CISPR16-1-1.2006, IDT)
IEC 61000-4-3.2008 Electromagnetic compatibility - Part 4-3. Testing and measurement techniques - RFEMS test
3 Terms and Definitions
GB/T 4365-2003 and established the following terms and definitions apply to this standard.
3.1
Shielding effectiveness shieldingeffectiveness; SE
In the same excitation level, the barrier coating and there is no shielding paint received specific power or voltage, and logarithmic. which is.
SE = 20lgV0V
(1)
SE = 10lgP0P
(2)
Where.
SE --- shielding effectiveness, dB;
V0 --- no reception voltage when the shielding paint;
V1 --- have received when voltage shielding paint;
P0 --- no reception power when the barrier coating;
P1 --- have received power when the barrier coating.
NOTE. The values \u200b\u200btaken in accordance with ATSMD4935, shielding effectiveness of shielding paint in case the received value than unshielded paint case received, the
In shielding effectiveness is a negative value.
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