GY/T 141-1999.Specifications and methods of measurement on scramble/descramble system used for analog TV signal in CATV systems.1范围GY/T 141规定了有线电视模拟电视信号加...
GY/T 140-1999.Specifications and methods of measurement on system outlets (5~1000MHz) used for CATV systems.5.2.2.2测量步骤a先不接被测部件，直接连通测量系统，调整...
GY/T 139-1999.Specifications and methods of measurement on demodulator used in CATV systems.调整衰减器A1,使被测解调器的输入电平为其标称输入电平。标准调制器...
GY/T 138一1999.Specification and methods of measurement on Combiners ( 5~ 1000MHz) used for CATV systems.4.2.2测量步骤4.2.2.1接通被测系统。选调制器输出射频信号频...
GY/T 137-1999.Specifications and methods of measurement on system outlets (5~ 1000MHz) used for CATV systems.5.2.2.2测量步骤a先不接被测部件，直接连通测量系统，调...
GY/T 136-1998.Specifications and methods of measurement on coaxial cable with bamboo type polyethylene insulation used in CATV systems.1范團GY/T 136规定了SYDLY-75-9. SYDLY-75-1...
GY/T 135 - 1998.Specifications and methods of measurement on coaxial cable with physically-foamed polyethylene insulation used in CATV systems.1范围GY/T 135规定了SYWV-75-5、SY...
GY/T 134一1998The method for the subjective assessment of the quality of digital television picture.1. 范围GY/T 134规定了数字电视图像质量的主观评价方法.GY/T 134适...
GY/T 133-1998.Regulation of inspection for the quality of production technition of broadcasting programmes.1范围GY/T 133规定了检验广播节目录制技术质量规范。GY/T ...
GY/T 132-1998.Technical requirements for multichannel microwave distribution system.GY/T 132规定了多路微波分配系统(MMDS)的术语和定义、频道配置、传输方式、技...
