YD/T 838.1-2003.Multicore and symmetrical pair/quad cables for digital communications Part 1: Generic specification.1总则1.1 范围YD/T 838.1是室内电缆的导则，规定了多芯...
YD/T 837.5-1996.1范围YD/T 837.5规定了铜芯聚烯烃绝缘铝塑综合护套市内通信电缆结构中的试验方法、试验设备、试验条件、试验步骤、试验结果...
YD/T 840-1996.1范围YD/T 840规定了电话网用户铜芯室内线(以下简称室内线)的技术要求、试验方法、检验规则及包装、标志等。YD/T 840适用于电话...
YD/T 839.4-2000.Filling compounds and flooding compounds for telecommunication cable and optical fiber cable Part 4: Flooding compounds.1范圈YD/T 839.4规定了通信电缆光缆用...
YD/T 839.3-2000.Filling compounds and flooding compounds for telecommunication cable and optical fiber cable Part 3: Cool - application flling compounds.1范围YD/T 839.3规定了通信...
YD/T 839.2-2000.Filling compounds and flooding compounds for telecommunication cable and optical fiber cable Part 2: Hot - application flling compounds.1范围YD/T 839.2规定了通信...
YD/T 839.1-2000.Filling compounds and flooding compounds for telecommunication cable and optical fiber cable Part 1 : Test method.1范围YD/T 839.1规定了通信电缆光缆用填充...
YD/T 821-1996.1范围YD/T 821规定了标准的和成帧的测试序列,以及在PDH和SDH系统上,差错性能测量的块长。YD/T 821是工作在各类比特率的数字传输系...
YD/T 822-1996.1范围YD/T 822规定了64kbit/s~1 920kbit/s会议电视的一种视频编解码方式。YD/T 822适用于速率为pX 64kbit/s(p=1~30)的国际国内会议电视等声象...
YD/T 826-1996.1范围YD/T 826规定了一般用途的FC-PC型单模单芯光纤光缆活动连接器(以下简称PC型单模光纤活动连接器)和标准连接器的图形和互连尺...
