This standard specifies the environmental testing requirements and methods for audio and video recording and playback products such as broadcasting radios, broadcasting television receivers (including CRT receivers, LCD receivers, PDP receivers, etc.), magnetic tape recorders, and audio power amplifiers (amplifiers). This standard applies to broadcasting radios, broadcasting television receivers (including CRT receivers, LCD receivers, PDP receivers, etc.), receivers, tape recorders, and other audio and video recording and playback products, audio power amplifiers (amplifiers), as the basis for evaluating their environmental adaptability in design, production, and testing. The following normative references are essential for the application of this document. For dated references, only the dated version applies to this document. For undated references, the latest version (including all modification orders) applies to this document. GB/T 2422-1995 Terminology for Environmental Testing of Electrical and Electronic Products GB/T 2423.1-2008 Environmental Testing of Electrical and Electronic Products Part 2: Test Methods Test A: Low Temperature GB/T 2423.2-2008 Environmental Testing of Electrical and Electronic Products Part 2: Test Methods Test B; High temperature GB/T 2423.6-1995 Environmental testing for electrical and electronic products Part 2: Test methods Test Eb and guidelines: Collision GB/T 2423.10-2008 Environmental testing for electrical and electronic products Part 2: Test methods Test Fc: Vibration (sinusoidal) GB/T 2423.21-2008 Environmental Testing for Electrical and Electronic Products - Part 2: Test Methods - Test M: Low Pressure SJ/T 11326-2006 Digital Television Receiving and Display Equipment - Environmental Test Methods - Requirements 3.1- Environmental Test Methods for Broadcasting and Television Receivers and Receivers - See SJ/T 11326-2006. The regulations for the free fall test of broadcasting and television receiver products are shown in Appendix A. 3.2 Audio and video recording and playback products such as broadcasting radios, tape recorders, and audio power amplifiers (amplifiers) 3.2.1 General requirements 3.2.1.1 Test samples Test samples (hereinafter referred to as "samples">) should be randomly selected from qualified batches inspected batch by batch. 3.2.1.2 Test sequence: This standard includes climate test and mechanical test, with climate test conducted first and then mechanical test conducted. Climate and mechanical tests should be conducted on the same sample
Function of testing report:
1. Project bidding: Issue authoritative third-party CMA/CNAS qualification report
2. Online e-commerce platform entry: Quality inspection report recognized by major e-commerce platforms 3. Used as a sales report: issuing legally effective testing reports to make consumers more confident 4. Papers and research: Provide professional personalized testing needs 5. Judicial services: providing scientific, fair, and accurate testing data 6. Industrial problem diagnosis: Verify the troubleshooting and correction of industrial production problemsBaijian and testing process:
1. Telephone communication and confirmation of requirements
2. Recommend solutions and confirm quotations 3. Mail samples and arrange testing 4. Progress tracking and result feedback 5. Provide reports and after-sales service 6. If urgent or priority processing is requiredTesting and testing characteristics:
1. The testing industry is fully covered, meeting different testing needs
2. Fully cover the laboratory and allocate localized testing nearby3. Engineers provide one-on-one services to make testing more accurate
4. Free initial testing, with no testing fees charged
5. Self service order delivery for free on-site sampling
6. Short cycle, low cost, and attentive service 7. Possess authoritative qualifications such as CMA, CNAS, CAL, etc 8. The testing report is authoritative and effective, and is generally used in China