IEC 60457-4-1978 刚性精密同轴线及其相关的精密连接器 第4部分:21mm刚性精密同轴线及其相关的中性精密同轴连接器 特性阻抗50Ω(9/21型) - 特性阻抗75Ω(6/21型)

标准号：IEC 60457-4-1978
中文标准名称：刚性精密同轴线及其相关的精密连接器 第4部分:21mm刚性精密同轴线及其相关的中性精密同轴连接器 特性阻抗50Ω(9/21型) - 特性阻抗75Ω(6/21型)
英文标准名称：Rigid precision coaxial lines and their associated precision connectors. Part 4 : 21 mm rigid precision coaxial line and associated hermaphroditic precision coaxial connector. Characteristic impedance 50 ohms (Type 9/21) - Characteristic impedance 75 ohms
标准类型：L91;L23
发布日期：1999/12/31 12:00:00
实施日期：1999/12/31 12:00:00
中国标准分类号：L91;L23
国际标准分类号：33.120.10;33.120.30
适用范围：Complements IEC 457-1 by referring to various clauses and sub-clauses contained in Part 1 to which important information is added. This concerns maximum frequency, electrical length, the type designation still provisional, standard atmospheric conditions