Information technology equipment and telecommunications equipment testing and inspection reports

How to handle inspection reports for information technology equipment and telecommunications equipment? What items are tested? How long is the report valid for? What is the testing method? How long is the testing cycle? We only do real testing.

Report template

Detection items:

Sound power level, sound pressure level, discrete prominent pure tones, some parameters, determination method of sound power level of equipment under basically free field conditions on the reflecting surface, method of measuring emitted sound pressure level at specified operator and bystander positions

Testing standards:

1. GB/T18313-2001ISO7779:1999 Method for determination of sound power level of equipment under basically free field conditions on reflective surfaces

2. ISO 7779 -2018 Acoustics Measurement of air noise emitted by information technology equipment and telecommunications equipment 6, 7

3, GB/T 18313-2001 ISO 7779:1999 Acoustics: Measurement of air noise emitted by information technology equipment and telecommunications equipment Measurement of GB/T 18313-2001 ISO 7779:1999

4, ECMA-74:2019 Measurement of airborne noise emitted by information technology equipment and telecommunications equipment 6, 7

5, ISO3745 :2012+A1:2017 Clause 9 Sound Power Level

6. GB/T 18698-2002 Declaration of noise emission values ​​of acoustic information technology equipment and communication equipment GB/T 18698-2002

7. GB/T 9813.2-2016 General specifications for computers Part 2: Portable microcomputers 5.6

8. ETSI EN 300753:2012 Noise generated by equipment development telecommunications equipment 6

9 , YD/T 1058-2015 High-frequency switching power supply system for communications YD/T 1058-2015

10. YD/T 731-2018 48V rectifier for communications YD/T 731-2018

11. ECMA-74:2019 Measurement of airborne noise emitted by information technology equipment and telecommunications equipment ECMA-74:2019

12. ISO 3746:2010 Determination of sound power level reflection of noise source by acoustic sound pressure method Simple method of using envelope measurement surface above the surface 8

13, GB/T 18313-2001 Measurement of air noise of acoustic information technology equipment and communication equipment 6.10, 7.8

14, GB /T 9813.2-2016 General Computer Specifications Part 2: Portable Microcomputers GB/T9813.2-2016

15. GB/T 6881.2-2017 Acoustic sound pressure method for determining the sound power level of noise sources in reverberant fields. Engineering method for small and medium-sized movable sound sources. Part 1: Hard-wall test chamber comparison method 8

16. YD/T 1058-2015 High-frequency switching power supply system for communications 5.20

17. ISO 7779-2018 Clause 6.7, Clause 7.7, Clause 8 Sound Power Level

18. GB/T 18313-2001 Measurement of air noise of acoustic information technology equipment and communication equipment GB/T 18313-2001

19. GB/T 3767-2016 Determination of noise by acoustic sound pressure method Engineering method for the approximate free field above the reflecting surface of source sound power level 8

20, ISO 3741:2010 Acoustic sound pressure method for determination of noise source sound power level Reverberation chamber precision method ISO 3741:2010

Uses of test reports

Shopping malls, e-commerce shelves, internal quality control, bidding, university scientific research, etc.

Test report validity period

Generally, the test report will indicate the time when the laboratory received the sample and the time when the report was issued. There will be no expiry date marked on the test report. Generally speaking, as long as the test is not updated, the test unchanged detection report will always be valid. If it has been used on an e-commerce platform, they generally only approve it within one year. So it also depends on the platform or the buyer’s requirements.

Testing fee price

Due to the different complexity of test items and experiments, please contact customer service for details before making a quotation.

Detection process