M62 广播、电视网结构 标准查询与下载

NF C90-480:1997 信息技术.一般敷设电缆系统(欧洲标准EN 50 173)

Information technology. Generic cabling systems.

NAVY MIL-T-23449 A NOTICE 1-1997 AN/PRT-5(*)广播电台传输装置

This notice should be filed in front of MIL-T-23449A(AS), dated 28 July 1969, and Amendment -1, dated 20 October 1969.

TRANSMITTING SET, RADIO AN/PRT-5(*)

NF C90-303-6*NF EN 60835-3-6:1997 数字微波无线电传送系统用设备的测试方法.第3部分:卫星地面站的测量.第6节:大功率放大器

METHODS OF MEASUREMENT FOR EQUIPMENT USED IN DIGITAL MICROWAVE RADIO TRANSMISSION SYSTEMS. PART 3 : MEASUREMENTS ON SATELLITE EARTH STATIONS. SECTION 6 : HIGH POWER AMPLIFIERS. (EUROPEAN STANDARD EN 60 835-3-6).

ITU-R P.1148-1-1997 预测和实际观察到的高频天波信号强度的对比的标准化程序以及这种对比的表示方法

The method described is a standardized procedure for comparing predicted and observed sky-wave signal intensities at frequencies between 2 and 30 MHz. Such comparisons provide information on the accuracy of prediction methods and on desirable improvements

Standardized Procedure for Comparing Predicted and Observed HF Sky-Wave Signal Intensities and the Presentation of Such Comparisons

ITU-R OPINION 97-1997 与地球相对位置保持不动的电视直播卫星的时间转换的操作使用-研究组4,10和11

that time transfer with an uncertainty of about 10 ns can be achieved between two or more cooperating ground

Operational Use of Geostationary Direct TV Satellites for Time Transfer Study Groups 4, 10 and 11

NF C90-403-2:1997 民居和建筑物电子系统(HBES).第3-2部分:应用.用户使用方法

HOME AND BUILDING ELECTRONIC SYSTEMS (HBES). PART 3-2 : ASPECTS OF APPLICATION. USER PROCESS. (EUROPEAN STANDARD EN 50 090-3-2).

ITU-T O.150-1996 数字传输设备性能测量仪器的一般要求 O系列: 数字和模拟/数字参数测试设备规范 第4研究组 第24页

The ITU-T (Telecommunication Standardization Sector) is a permanent organ of the International Telecommunication Union (ITU). The ITU-T is responsible for studying technical, operating and tariff questions and issuing Recommendations on them with a view t

General Requirements for Instrumentation for Performance Measurements on Digital Transmission Equipment Study Group 4; 24 pp

NF C90-101-2:1996 电视和声音信号的电缆分配系统.第2部分:设备的电磁兼容性

Cable networks for television signals, sound signals and interactive services - Part 2 : electromagnetic compatibility for equipment.

ITU-R P.1146-1995 1到3GHz频段内陆地移动和陆地广播业务的场强预测

The prediction is an empirical method based upon an extensive database of field strength and path loss measurements. It is designed to achieve the level of accuracy needed for the preliminary planning of mobile radio and broadcastingservices operating in

(WITHDRAWN) Prediction of Field Strength for Land Mobile and Terrestrial Broadcasting in Services in the Frequency Range from 1 to 3 GHz

ITU-R HDBK DTS-1995 演播室内数字电视信号编码和界面手册

The PCM system on which the coding of digital television signals depends was invented by Alec Reeves as long ago as 1937 but it was not until the early 1970s that the development of digital techniques had reached the stage where it was possible to pursue

Handbook Digital Television signals Coding and Interfacing within Studios

NF C90-101-5:1994 电视和声音信号用电缆分配系统.第5部分:输入设备

Cabled distribution systems for television and sound signals. Part 5 : headend equipment.

NF C90-101-1:1994 电视信号、声音信号和交互作用服务用电缆网络.第1部分:安全要求

Cable networks for television signals, sound signals and interactive services - Part 1 : safety requirements.

ITU-R BT.798-1 SPANISH-1994 甚高频(VHF)/超高频(UHF)频段内的数字电视地面广播

The ITU Radiocommunication Assembly considering a) that Question ITU-R 121/11 addresses the terrestrial broadcasting of digital HDTV signals; b) that digital television terrestrial broadcasting (which includes HDTV) may be introduced by some countries in the VHF/UHF bands; c) that the VHF/UHF bands are currently used for analogue television broadcasting (Recommendation ITU-R BT.470) , and they are quite congested in some countries; d) that consequently the VHF/UHF terrestrial bands will likely be shared between analogue television broadcasting and digital television broadcasting.

Digital Television Terrestrial Broadcasting in the VHF/UHF Bands

ITU-T O.41-1994 psophometer使用的电话型电路-规格为测量设备-设备的计量模拟参数(第4研究组)17页

This Recommendation provides basic requirements for psophometers to be used for the measurement of noise and other interfering signals on international telephone circuits and circuit sections.

Psophometer for Use on Telephone-Type Circuits - Specifications for Measuring Equipment - Equipment for the Measurement of Analogue Parameters (Study Group 4) 17 pp [Superseded: ITU-T P.53]

SJ/T 9508.1-1993 30MHz～1GHz声音和电视信号的电缆分配系统分支器质量分等标准

本标准适用于分支器的质量分等，是考核该产品质量等级的依据。 本标准只给出了关键性技术指标，必须与GB11318.1～11318.6和有关产品标准一起使用。

Grading standard of quelity for subscriber's tap used in cabled distribution systems primarily intended for sound and television signals operating between 30MHz and 1GHz

SJ/T 9508.9-1993 30MHz～1GHz声音和电视信号的电缆分配系统电视调制器质量分等标准

本标准适用于电视调制器的质量分等，是考核该产品质量等级的依据。 本标准只给出了关键性技术指标，必须与GB 11318.1～11318.6和有关产品标准一起使用。

Grading standard of quelity for modulutor used in cabled distribution systems primarily intended for sound and television signals operating between 30MHz and 1GHz

SJ/T 9508.8-1993 30MHz～1GHz声音和电视信号的电缆分配系统频率变换器质量分等标准

本标准适用于频率变换器的质量分等，是考核该产品质量等级的依据。 本标准只给出了关键性技术指标，必须与GB11318.1～11318.6和有关产品标准一起使用。

Grading standard of quelity for frequency converter used in cabled distribution systems primarily intended for sound and television signals operating between 30MHz and 1GHz

SJ/T 9508.3-1993 30MHz～1GHz声音和电视信号的电缆分配系统系统输出口质量分等标准

本标准适用于系统输出口的质量分等，是考核该产品质量等级的依据。 本标准只给出了关键性技术指标，必须与GB11318.1～11318.6和有关产品标准一起使用。

Grading standard of quelity for system outlet used in cabled distribution systems primarily intended for sound and television signals operating between 30MHz and 1GHz

SJ/T 9508.2-1993 30MHz～1GHz声音和电视信号的电缆分配系统分配器质量分等标准

本标准适用于分配器的质量分等，是考核该产品质量等级的依据。 本标准只给出了关键性技术指标，必须与GB 11318.1～11318.6和有关产品标准一起使用。

Grading standard of quelity for splitter used in cabled distribution systems primarily intended for sound and television signals operating between 30MHz and 1GHz

SJ/T 9508.7-1993 30MHz～1GHz声音和电视信号的电缆分配系统天线放大器质量分等标准

本标准适用于天线放大器的质量分等，是考核该产品质量等级的依据。 本标准只给出了关键性技术指标，必须与GB 11318.1～11318.6和有关产品标准一起使用。

Grading standard of quelity for antenna amplifier used in Cabled distribution systems primarily intended for sound and television signals operating between 30MHz and 1GHz