您的位置: 标准下载 » 国内标准 » GB 国标 »

GB/T 11444.4-1996 国内卫星通信地球站发射、接收和地面通信设备技术要求 第四部分:中速数据传输设备

时间:2024-05-06 03:46:51 来源: 标准资料网 作者:标准资料网 阅读:8324
下载地址: 点击此处下载
基本信息
标准名称:国内卫星通信地球站发射、接收和地面通信设备技术要求 第四部分:中速数据传输设备
英文名称:Transmitter,receiver and ground communication equipment used in domestic satellite communication earth stations-Technical requirements-Part 4: Intermediate data rate (IDR) transmission equipment
中标分类: 通信、广播 >> 通信设备 >> 卫星通信设备
ICS分类: 电信、音频和视频技术 >> 综合业务数字网(ISDN)
替代情况:GB 12406-1990
发布部门:国家技术监督局
发布日期:1996-01-02
实施日期:1997-01-02
首发日期:1996-12-18
作废日期:1900-01-01
主管部门:信息产业部(通信)
归口单位:信息产业部(通信)
起草单位:邮电部第一研究所
出版社:中国标准出版社
出版日期:2004-07-25
页数:平装16开, 页数:19, 字数:32千字
书号:155066.1-14222
适用范围

本标准规定了在卫星通信地球站中,除天线分系统和终端设备分系统外,中速数据传输的发射、接收和地面通信设备的技术要求。本标准适用于4/6GHz频段,信息速率为2048kbit/s和8448kbit/s的中速数据传输设备。本标准适用于卫星通信地球站的建立和技术改造,并作为制造设备的技术依据。

前言

没有内容

目录

没有内容

引用标准

没有内容

所属分类: 通信 广播 通信设备 卫星通信设备 电信 音频和视频技术 综合业务数字网(ISDN)
Product Code:SAE J412
Title:General Characteristics and Heat Treatments of Steels
Issuing Committee:Carbon And Alloy Steels Committee
Scope:The information and data contained in this SAE Information Report are intended as a guide in the selection of steel types and grades for various purposes. Consideration of the individual types of steel is preceded by a discussion of the factors affecting steel properties and characteristics. SAE steels are generally purchased on the basis of chemical composition requirements (SAE J403, J404, and J405). High-strength, low alloy (HSLA) steels (SAE J1392 and J1442) are generally purchased on the basis of mechanical properties; different chemical compositions are used to achieve the specified mechanical properties. Because these steels are characterized by their special mechanical properties obtained in the as-rolled condition, they are not intended for any heat treatment by the purchaser either before, during, or after fabrication.In many instances, as in the case of steels listed in SAE J1268 and J1868, hardenability is also a specification requirement. This information report can be used as a reference for determining the general characteristics and applications of commonly used SAE steels. The use of typical heat treatments listed in Tables 1 through 7 is recommended. These and other heat treatments commonly used on steel are briefly described at the end of this section.
基本信息
标准名称:独居石精矿化学分析方法
中标分类: 矿业 >> 非金属矿 >> 化工原料矿
替代情况:转化为XB/T 603-1995
发布日期:
实施日期:1977-12-01
首发日期:
作废日期:
出版日期:
适用范围

没有内容

前言

没有内容

目录

没有内容

引用标准

没有内容

所属分类: 矿业 非金属矿 化工原料矿