Browse Standards

在电话自动交换网上使用的标准化 2400/1200比特/秒调制解调器

2400/1200 bits per second modem standardized for use in the general switched telephone network

在四线租用电话型电路上使用的标准化2400比特/秒调制解调器

2400 bits persecond modem standardized for use on 4-wire leased telephone type circuits

在电话自动交换网上的自动应答设备和(或)并行自动呼叫设备， 包括人工和自动建立呼叫时使回波控制装置停止工作的规程

Automatic answering equipment and/or parallel automatic calling equipment on the general switched telephone network， including procedures for bling of echo control devices for both manually and automatically established calls

在电话自动交换网上使用的标准化600/1200波特调制解调器

600/1200 bauds modem standardized for use in the general switched telephone network

在电话自动交换网和点对点二线租用电话型电路上使用的标准化的1200比特/秒双工调制解调器

1200 bits per second duplex modem standardized for use in the general switched telephone network and on point-to-point 2-wire leased telephonecircuits

模拟微波接力通信系统容量系列及波道配置

Capacity series and radio-frequency channel arrangement for analog microwave relay systems

电报用五单位数字保护码

Protected 5-unit numerical code for telegram service

国家通信网用户电报及低速数据编号

Numbering for telex and low speed data in national communication network

利用电视信号传送标准时间频率

Time and frequncy dissemination via television signals

在模拟电话电路上开放电报及低速数据的时分复用设备技术要求

Specifications of TDM equipment operating on an analog telephone-type circuit for telegraph and lower-speed data

广播电视名词术语 电视广播 电视技术

Broadcasting and television terminology--Television broadcasting--Techniques

广播电视名词术语 电视广播 视频测量仪器和技术

Broadcasting and television terminology--Television broadcasting--Test equipment and test techniques

广播电视名词术语 电视广播 电视设备

Broadcasting and television terminology--Television broadcasting--Equipment

广播电视名词术语 声音广播 通用部分

Broadcasting and television terminology--Sound broadcasting--General terms

声音和电视信号的电缆分配系统输出口基本尺寸

Basic size of outlet of cable distribution systems intended for sound and television signals

彩色电视图像质量主观评价方法

Method for subjective assessment of quality of colour television pictures

调频广播发射机技术参数和测量方法 双节目

Technical parameters and measuring methods for FM broadcasting transmitters of dual programmes

反射式肤色测试图

Reflection flesh tone test card

反射式彩条测试图

Reflection colour bar test card

600～9600 bit/s基带调制解调器的测量方法

Test methods of 600～9600 bit/s baseband modem