This standard specifies the performance parameter requirements and measurement methods for branching devices and distributors (5-1000M) (hereinafter referred to as components) used in cable television systems. Any equivalent measurement method that can ensure the same measurement accuracy can also be applied. In case of dispute, this standard shall prevail. This standard is applicable to the detection of performance parameters of branching devices and distributors (5-1000MHt) used in cable television systems, and serves as the technical basis for network access evaluation. 2. The provisions contained in the following standards constitute the provisions of this standard by reference in this standard. At the time of publication of this standard, all versions shown are valid. All standards will be revised, and parties using this standard should explore the possibility of using the latest versions of the following standards. GY/T106-1999 Technical Specification for Cable Television Broadcasting System CB/T 6510-1996 Cable Distribution System for Television and Sound Signal B/T11318.1-1996 Cable Distribution System Equipment and Components for Television and Sound Signal Part 1: General Specification B/T11318.9-1996 Cable Distribution System Equipment and Components for Television and Sound Signal Part 9: General Specification for Power Supply Equipment CB/T11318.10-1996 Cable Distribution System Equipment and Components for Television and Sound Signal Part 10 Part: General specifications for distributors and user branching devices 3 Product classification 3.1 Branch devices are divided into one branch device, two branch devices, and four branch devices according to the number of output ports. 3.2 Distributors are divided into industrial second distributors, third distributors, and fourth distributors based on the number of output ports. 3.3 Components are divided into universal, current passing, and waterproof types according to different usage conditions
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