The relevant terms in the GB/T 50262 Standard for Basic Terminology of Railway Engineering are applicable to this regulation. The video access node is a node that has the functions of information access, storage, distribution, forwarding, calling, control, system management, alarm processing, interconnection and linkage with other business systems. The video region node is a node that has functions such as storing, distributing, forwarding, calling, controlling, managing systems, and interconnecting with other business systems for the information in the region. The video core node is a node that has functions such as information distribution, invocation, control, system management, and interconnection with other systems. Horizontal resolution is the number of vertical black and white stripes that can be resolved within a horizontal size of an image with equal height, measured in Television Line (TVL). Vertical resolution is the number of horizontal black and white stripes that can be resolved within the vertical size of an image, measured in Television Line (TVL). Gray scale The level of brightness that can be distinguished between the darkest and brightest in the same level of brightness on a display screen The maximum brightness identification level is the ability of a camera to distinguish brightness changes from black to white in the same scene and under the same illumination
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