发布时间:2024-05-27 17:49:26 - 更新时间:2024年06月29日 15:22
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Connection to Earth of an Audio-Frequency Telephone Line in Cable - Protection Against Interference (Study Group V; 1 pp; Cancelled)
Terrestrial Trunked Radio (TETRA) - Technical requirements for Direct Mode Operation (DMO) - Part 5 : gateway air interface (V1.2.1).
Terrestrial Trunked Radio (TETRA) - Technical requirements for direct mode operation (DMO) - Part 5 : gateway air interface (V1.3.1)
Terrestrial Trunked Radio (TETRA) - Technical requirements for Direct Mode Operation (DMO) - Part 4 : type 1 repeater air interface (V1.3.1).
Terrestrial Trunked Radio (TETRA) - Technical requirements for direct mode operation (DMO) - Part 4 : type 1 repeater air interface (V1.4.1)
It is necessary to reduce to a minimum the cost of establishing the infrastructure required for systems used in rural areas. This infrastructure
Radio-Relay Systems in Bands 8 and 9 for the Provision of Telephone Trunk Connections in Rural Areas - Section 9E1 - Line-of-Sight Radio-Relay Systems
本标准规定了交通小型线电基地台接地系统的功能和技术要求,建筑物的防雷保护及小型线电基站电源系统的雷电过电压保护要求。 本标准适用于新建小型基地台接地系统的设计、施工以及日常使用维护。对扩建、改建的基地台亦可参照使用
Technical requirements of earthing and lightning protection for small base radio station of traffic
Terrestrial Trunked Radio (TETRA) - Security - Lawful Interception (LI) interface (V2.1.1)
Line material. Earth wire jastener
Land use standards for ancillary facilities of trunk roads
Defines the logical and physical interfaces, and the performance attributes for the interface between the rail subsystem and the highway subsystem
Standard for the Interface Between the Rail Subsystem and the Highway Subsystem at a Highway Rail Intersection
GROUND CORD & GROUND JACK ASSEMBLY
Grounding and Shielding Circuits and Interference
Overhead line material — Connectors for ground conductor
1.1 This standard specification establishes minimum requirements for neutral and earth busbars having a rated normal current of up to 200 amperes
NEUTRAL AND EARTH BUSBARS
Connection to Earth of an Audio-Frequency Telephone Line in Cable - Protection Against Interference (Study Group V; 1 pp; Cancelled)
Terrestrial Trunked Radio (TETRA) - Technical requirements for Direct Mode Operation (DMO) - Part 5 : gateway air interface (V1.2.1).
Terrestrial Trunked Radio (TETRA) - Technical requirements for direct mode operation (DMO) - Part 5 : gateway air interface (V1.3.1)
Terrestrial Trunked Radio (TETRA) - Technical requirements for Direct Mode Operation (DMO) - Part 4 : type 1 repeater air interface (V1.3.1).
Terrestrial Trunked Radio (TETRA) - Technical requirements for direct mode operation (DMO) - Part 4 : type 1 repeater air interface (V1.4.1)
It is necessary to reduce to a minimum the cost of establishing the infrastructure required for systems used in rural areas. This infrastructure
Radio-Relay Systems in Bands 8 and 9 for the Provision of Telephone Trunk Connections in Rural Areas - Section 9E1 - Line-of-Sight Radio-Relay Systems
本标准规定了交通小型线电基地台接地系统的功能和技术要求,建筑物的防雷保护及小型线电基站电源系统的雷电过电压保护要求。 本标准适用于新建小型基地台接地系统的设计、施工以及日常使用维护。对扩建、改建的基地台亦可参照使用
Technical requirements of earthing and lightning protection for small base radio station of traffic
Terrestrial Trunked Radio (TETRA) - Security - Lawful Interception (LI) interface (V2.1.1)
Line material. Earth wire jastener
Land use standards for ancillary facilities of trunk roads
Defines the logical and physical interfaces, and the performance attributes for the interface between the rail subsystem and the highway subsystem
Standard for the Interface Between the Rail Subsystem and the Highway Subsystem at a Highway Rail Intersection
GROUND CORD & GROUND JACK ASSEMBLY
Grounding and Shielding Circuits and Interference
Overhead line material — Connectors for ground conductor
1.1 This standard specification establishes minimum requirements for neutral and earth busbars having a rated normal current of up to 200 amperes
NEUTRAL AND EARTH BUSBARS