Terminology for electrotechnical space radiocommunication
适用范围:GB/T 14733的本部分规定了有关空间无线电通信的术语和定义。 本部分适用于我国涉及空间无线电通信的所有科技领域。
发布日期:2005-10-10 实施日期:2006-06-01
Methods of measurement for equipment used in digital microwave radio transmission systems; part 2: measurements on terrestrial radio-relay systems; section 3: RF branching networks (IEC 60835-2-3:1992)...
适用范围:The document deals with methods of measurement for branching networks used in digital radio-relay systems.
Methods of measurement for equipment used in digital microwave radio transmission systems; part 1: measurements common to terrestrial radio-relay systems and satellite earth stations; section 2: basic ...
适用范围:The document deals with measurement of basic characteristics common to terrestrial radio-relay systems and satellite earth stations. These basic chracteristics apply to all of the frequence ranges empl...
适用范围:本标准规定了IP电话终端设备传输性能技术要求和测试方法,并给出语音质量建议。 本标准适用于固定和移动的窄带(300~3400Hz)IP电话终端设备,包括IP电话、IP电话网关、无线接入IP电话、无线IP电话、IP视讯会议终端、IAD以及软电...
实施日期:2008-01-01
Low-voltage surge protective devices--Part 21:Surge protective devices connected to telecommunications and signalling networks--Performance requirements and testing methods
适用范围:本部分适用于对受到雷电或其他瞬态过电压直接或间接影响的电信和信号网络进行防护的浪涌保护器(以下称为SPD——Surge protective device)。 这些SPD的作用是对连接到系统标称电压最高为交流1000V(均方根值)、直流1500V的...
发布日期:2004-02-04 实施日期:2004-06-01
实施日期:1999-07-15
Methods of measurement of surround audio for digital TV
适用范围:本标准规定了数字电视环绕声伴音、双声道伴音的电性能测量项目、测量条件和测量方法。 本标准适用于标准清晰度和高清晰度数字电视接收设备(数字电视接收机和数字电视接收器),是产品设计、生产、检验的主要依据。
发布日期:2008-06-30 实施日期:2009-01-01
The wire configurations on poles of open wire lines for toll telecommunications
Terminal Equipment (TE); international videotex interworking; english version ETS 300105:1991
Glossary of basic terms used in electrotechnology
适用范围:この規格は,電子技術に用いる主な基本用語とその定義について規定する。
实施日期:2006-11-20
发布日期:2013-06-01 实施日期:2013-06-01
Elektromechanische Schaltrelais. Vordruck fuer Bauartspezifikation. Elektromechanische Telekom-Relais mit bewerteter Qualitaet. Nicht standardisierte Bauarten und Konstruktionen Electromechanical All-o...
适用范围:This part of IEC 61811 is a blank detail specification applicable to electromechanical all-ornothingtelecom relays of assessed quality. Relays according to this standard are provided foroperation in te...
实施日期:2002-09-19
Geraete in beweglichen Funkdienst. Messverfahren fuer Einseitenbandempfaenger (R3E,H3E oder J3E) Measurement for Radio Equipment Used in the Mobile Services Part 5:Methods of Measurement for Receivers ...
适用范围:Covers receivers having audio frequency band-widths generally not exceeding 10 kHz for the reception of voice and other types of signals, using single-sideband amplitude modulation. To be read in conju...
实施日期:1989-01-01
Apparate mit einer oder mehreren Sonderfunktionen zum Anschluss an das oeffentliche Fernsprechnetz von British Telecommunications. Allgemeine Anforderungen Apparatus with One or More Particular Functio...
适用范围:Telephone equipment, Telephones, Telephony, Communication equipment, Telecommunication systems, Telephone networks
实施日期:1984-02-29
Generic specification for antennas used in the mobile services
实施日期:1988-12-01
Fernwirkeinrichtungen und Fernwirksysteme. Uebertragungsprotokoll. Allgemeine struktur der Anwendungsdaten. Anforderungen Telecontrol Equipment and Systems Part 5:Transmission Protocols Section 5.3:Spe...
适用范围:Specifies rules for structuring application data units in transmission frames of telecontrol systems that are presented as generic standards that may be used to support a wide range of telecontrol appl...
实施日期:1992-12-15
Integrated Services Digital Network (ISDN); Connected Line Identification Presentation (COLP) supplementary service - Digital Subscriber Signalling System No. one (DSS1) protocol - Part 2: Protocol Imp...
适用范围:The document deals with the protocol implementation conformance statement proforma of the connected line identification presentation supplementary service.
Integrated Services Digital Network (ISDN); attachment requirements for terminal equipment to connect to an ISDN using ISDN basic access; layer 3 aspects; english version ETS 300104:1991
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