Browse Standards
1653+ standards in database
1653 result(s) found
电话自动交换网带内单频脉冲线路信号方式
Inband pulsing single frequencyline signalling system for telephone automatic switching network
电话自动交换网局间直流信号方式
Interoffice direct signalling system for telephone automatic switching network
电话自动交换网局间中继数字型线路信号方式
Interoffice junction digital line signalling system for telephone automatic switching network
工业、科学和医疗(ISM)射频设备电磁骚扰特性的测量方法和限值
Industrial,scientific and medical(ISM) radio-frequency equipment-Electromagnetic disturbance characteristics-Limits and methods of measurement
电视中间频率
Intermediate frequencies of television
25～1000 MHz陆地移动通信网的容量系列及频道配置
Capacity series and frequency channels arrangement in 25 to 1000 MHz land mobile telecommunication network
电信线路遭受强电线路危险影响的容许值
The tolerable limits of danger ontelecommunication lines from power lines
无线电发射设备安全要求
Safety requirements for radio transmitting equipment
广播电视演播系统的视音频和脉冲设备安全要求
Safety requirements for video-audio and pulse equipment of broadcasting television studio system
发播航行警告、气象信息和紧急信息系统(NAVTEX)技术条件和使用要求
Technical specifications and operational requirements for the systems for promulgation of navigational and meteorological warnings and urgent information
彩色及黑白电视广播接收机电耗限定值及测试方法
The limited value and testing method of electrical energy consumption for broadcasting receiver of colour and monochromic television
收录音机效率限定值及测量方法
The limited value of efficiency and methods of measurement on radio receivers and recorder
数字网内时钟和同步设备的进网要求
Requirements for clock and synchronization equipment used in the digital network
视听、视频和电视设备及系统维护与操作的安全要求
Safe handling and operation of audiovisual， video and television equipment and systems
无线电发射机杂散发射功率电平的限值和测量方法
Limits of maximum permitted spurious emission power levels and methods of measurement for radio transmitters
短波无线电测向台(站)电磁环境要求
Requirements of the electromagnetic environment for short-wave radio direction finding stations
短波无线电收信台(站)电磁环境要求
Electromagnetic environment requirements for shortwave radio receiving stations
微波接力站电磁环境保护要求
Electromagnetic environment protection requirements for microwave relay stations
地球站电磁环境保护要求
Electromagnetic environment protection requirements for earth stations
对空情报雷达站电磁环境防护要求
Requirements of electromagnetic environment protection for air defense surveillance radar station