GB/T 21110-2007.Projectors-Image size/ projection distance calculations. 1范围 GB/T 21110规定了已知放映距离和放映物镜焦距时,计算任何类型放映设备放映画面尺寸的方法;也规定了已知放映画面尺寸和放映物镜焦距时,计算放映

GB/T 21111-2007.Projection in indoor rooms-Classification of transmitting projection screens and measurement of their transmitted luminance levels. 3.

GB/T 33557-2017.Specification of testing TS for terrestrial digital television. GB/T 33557规定了用于地面数字电视测试过程使用的传送流(以下简称“测试用码流")的技术要求。 GB/T 33557适用于地面数字电视

GB/T 33558-2017.Technical requirement and method of measurement for network interface module of digital terrestrial television. GB/T 33558规定了地面数字电视接收设

GB/T 33559-2017.Technical requirement and method of measurement for signal analyzer of digital terrestrial television. 1范围 GB/T 33559规定了符合GB20600-2006

GB/T 17953-2012.Interface for 4 : 2 : 2 digital component video signals in standard definition television. GB/T 17953规定了工作在GB/T14857-1993中4:2:2模式下的625

GY/T 305-2017.Technical requirements for two-dimensional barcode in TV broadcasting. 1 范围 GY/T 305规定了电视播出二维码的编码参数、制作播出、码图生成的技术要求。 GY/T 305适用于电视节目制作和播出

GY/T 306. 1-2017.Specification for fiber to the home of CATV network -Part 1: General requirements. GY/T 306的本部分规定了有线电视网络光纤到户(FTTH)的体系结构和总体要求、FTH用光缆及线

GY 5022-2007.Code for measurement of reverberation time in radio & television studios. 1.0.1 为规范和统-广播电视播音(演播)室混响时间测量方法和条件，使测量结果能反映房间固有的混响时间特性，制定本规

GY/T 5084-2011.Code for technics earthing of radio and television engineering. 1.0.1 为规范广播电视工程工艺接地系统的设计、施工及验收，确保广播电视技术系统设备安全可靠的运行，制定本规范。 1.0.2本规范适用于新建