This standard specifies the technical requirements and measurement methods for projectors used in digital film streaming projection systems. Any equivalent measurement method that can ensure the same measurement uncertainty can also be used. In case of dispute, this standard shall prevail. This standard is applicable to the research and development, production, use, maintenance, and measurement of projectors for digital film streaming projection systems. The following normative references are essential for the application of this standard. For dated references, only the version with the date indicated applies to this standard. For undated references, the latest version (including all amendments) applies to this standard. GB 2099.1-2008 Plugs and Sockets for Household and Similar Purposes Part 1: General Requirements SJ/T 11298-2003 General Specification for Digital Projectors CIE 1931 Color Space CIE 1976 Uniform Color Space System ITU-R BT.500-11 Method for the Subjective Assessment of the quality of television pictures Broadband Digital Content Protection Technology (High bandwidth Digital Content Protection) 3 Terms and Definitions The following terms and definitions apply to this standard. Normal operating conditions: The projector should be turned on after being connected to a power source that meets the specified requirements. After the projector stabilizes, input a grayscale test image to the projector. The grayscale test image displayed on the screen should have a clear and recognizable state when set to the default operating state
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