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本標準所列名詞術語適用于電信各的生產、設計、施工、維護、管理、科研、教學、出版及援外等方面。
GB/T 5464的本部分規定了電氣設備用圖形符號及其名稱、含義和應用范圍。本部分的圖形符號適用于以下用途:——標識設備或其組成部分(如控制器或顯示器);——指示功能狀態或功能(如開、關、告警);——標示連接(如端子、接頭);——提供包裝信息(如包裝物的標識、裝卸說明);——提供設備的操作說明(如使用限制)。本部分的圖形符號不適用于以下用途。——安全標記;——公共信息;——圖樣的簡圖;——產品技術文件。
本標準規定了廣播電視的主要術語和定義。本標準適用于廣播電視系統。
本標準敘述了符合ITU-R(CCIR)規定的地面廣播電視標準的電視廣播接收機(以下簡稱電視機)的標準測量條件和測量方法。適用于本標準的電視機,可以是用于直接接收無線廣播電視的電視機,也可以是經電纜網絡接收的電視機,或可作為錄像機的放像、家用音像設備和游戲機的監視器。本標準不包括專用于音頻通道的測量。有關音頻通道的測量方法在IEC107-2,IEC107-3,IEC107-4和IEC107-5中敘述;有關非標準廣播信號條件下的測量方法,在IEC107-6中敘述。 本標準敘述了電視機性能的測量,并列出了對這些性能有用的特性及對這些特性統一的測量方法,以便對電視機進行統一的比較。但沒有規定性能要求。 本標準沒有敘述一般安全要求,該部分按照IEC 65號公告或其他IEC安全標準執行。同時也沒有敘述干擾和抗擾度的要求,這些要求按照CISPR 13和20號公告執行。
本標準適用于新建、擴建和改建的住宅、辦公、旅館、文化、博物館、觀演、會展、教育、金融、交通、醫療、體育、商店等民用建筑及通用工業建筑的智能化系統工程設計,以及多功能組合的綜合體建筑智能化系統工程設計。
為加強智能建筑工程質量管理,規范智能建筑工程質量驗收,規定智能建筑工程質量檢測和驗收的組織程序和合格評定標準,保證智能建筑工程質量,制定本規范。 本規范適用于新建、擴建和改建工程中的智能建筑工程的質量驗收。 智能建筑工程的質量驗收除應符合本規范外,尚應符合現行有關標準的規定。
本標準規定了廣播電視發射臺(以下簡稱發射臺)的運行維護任務和實施規程。本標準適用于縣及縣以上廣播電視行政部門所轄的發射臺。縣以下發射臺的運行維護參照本標準的規定執行。各發射臺應根據本標準的規定,結合本臺實際情況制定實施細則。
本標準所列的名詞術語適用于廣播接收設備的科研、生產。 本標準收詞范圍以廣播接收為主體,適當地收編了與廣播接收密切相關的電纜分配系統,廣播接收天線和有關測量的術語。 本標準中各名詞術語的文字說明,是為了盡可能準確地解釋表達該詞條的內容和涵義,以利于統一它們的技術概念。
本標準規定了農村VSAT衛星通信的頻段、網絡結構、業務范圍、網管功能、制式、接口、系統和設備的技術指標、可用性、編號計劃、計費、同步方式、電源、接地和防雷等技術要求。 本標準適用于靜止衛星軌道(GSO)衛星固定業務。適應于國內波束通信衛星和租用衛星轉發器或點波束組成的國內衛星通信系統。
There is an increasing interest worldwide for digital sound broadcasting to vehicular, portable and fixed receivers in the broadcasting-satellite service (BSS) (sound) bands allocated at the World Administrative Radio Conference for Dealing with Frequency Allocations in Certain Parts of the Spectrum (Malaga-Torremolinos, 1992) (WARC-92), and that several satellite-based digital sound broadcasting services for national and supra-national coverage are being considered. Developed for both satellite and terrestrial broadcasting applications in order to allow a common low-cost receiver to be used. Digital System B, originally proposed by Voice of AmericdJet Propulsion Laboratory (VONJPL), was designed to provide maximum efficiency on board a communications satellite. Digital System Ds, also known as the Worldspace system, is primarily designed to provide satellite digital audio and data broadcasting for fixed and portable reception. Digital System DH, also known as the hybrid satellite terrestrial Worldspace system, is designed to provide satellite digital audio and data broadcasting for vehicular, fixed and portable reception by inexpensive common receivers. Digital System E, also known as the ARIB (Association of Radio Industries and Businesses) system, is designed to provide satellite and complementary terrestrial on-channel repeater services for high-quality audio and multimedia data for vehicular, portable and fixed reception.
This Recommendation provides five levels of different architecture for the integration of mobilesatelliteservice (MSS) systems with terrestrial public switched telephone network (PSTN) or cellular network. Annex 1 addresses the concepts of such an archi
Consideration of potential for interference between IMT-2000 and systems beyond IMT-2000 and other services is essential for administrations in planning the use of frequency bands where the mobile service exists on a co-primary basis with other services o
This Report provides information on the current status of terrestrial electronic news gathering (ENG), television outside broadcast (TVOB) and electronic field production (EFP) systems.
This Report gives the protection requirements for terrestrial broadcasting services in the 620-790 MHz band against potential interference from broadcasting BSS (GSO, non-GSO) satellite systems.
This Report provides a summary of the market analysis and forecast of the future market, as well as detailed data on the traffic forecasts, based on internal and external studies to the year 2010– 2020 as well as detailed data on the traffic forecasts in different parts of the world. It also provides examples of potential services and applicationsof future development of IMT-2000 and systems beyond IMT-2000 from the year 2010 onwards.
There is a risk of co-channel and adjacent channel interference between IMT-2000 systems and other systems in the band, for example, Broadband Wireless Access Systems such as MMDS or IEEE 802.16. This Report addresses coexistence between the following: ? 802.16 TDD, which is based on the IEEE 802.16 series of standards, and IMT-2000 CDMA-DS,? 802.16 TDD, and IMT-2000 CDMA-TDD,? MMDS and CDMA-DS,?MMDS and CDMA-TDD. Mobile application of IEEE 802.16 is out of the scope of this study.