1 Scope: This specification specifies the technical requirements, quality assurance regulations, delivery preparation, and instructions for active anti noise receiver sets. This specification applies to active noise resistant receiver and transmitter sets for wired and wireless communication. The term 'product' in this specification refers to an active anti noise receiver set. 2. The relevant clauses in the following documents become the clauses of this specification through reference. Any reference document with a date or revision shall not be applicable to this specification in any subsequent modification list (excluding corrected content) or revised version. However, parties advocating the use of this specification shall explore the possibility of using its latest version. For referenced documents without date or revision, the latest version applies to this specification. GB/T 15528-1995 Measurement Methods for Transmission and Receiver Assemblies GJB 179A-1996 Sampling Inspection Procedures and Tables by Attributes GJB 367A-2001 General Specification for Communication Equipment GJB 2139-1994 General Specification for Dynamic and Electromagnetic Receivers SJ 20045-1992, General Specification for Pneumatic and Electromagnetic Transmitters SJ 20128:1992 Environmental Test Methods for Communication Electroacoustic Devices SJ 20368-1993 Performance Measurement Methods for Transmitters and Receivers
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