CEI EN 50132-5-3 Alarm systems - CCTV surveillance systems for use in security applications Part 5-3: Video transmission - Analogue and digital video transmission
Список продуктов
Данный раздел/документ содержится в продуктах:
Данный раздел/документ содержится в продуктах:
- Техэксперт: Машиностроительный комплекс
- Картотека зарубежных и международных стандартов
- DIN EN 1012-1 Compressors and vacuum pumps - Safety requirements - Part 1: Air compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
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- DIN EN 1012-1 Compressors and vacuum pumps - Safety requirements - Part 1: Air compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
- 23.140
- DIN EN 1012-1 Compressors and vacuum pumps - Safety requirements - Part 1: Air compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
- DIN EN 1012-1 Compressors and vacuum pumps - Safety requirements - Part 1: Air compressors
- DIN EN 1012-1 Compressors and vacuum pumps - Safety requirements - Part 1: Air compressors
- CEN EN ISO 14122-2 Safety of machinery - Permanent means of access to machinery - Part 2: Working platforms and walkways - Incorporates Amendment A1: 2010
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- DIN EN 1012-3 Compressors and vacuum pumps - Safety requirements - Part 3: Process compressors
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- CEN EN 626-1 Safety of machinery - Reduction of risks to health from hazardous substances emitted by machinery - Part 1: Principles and specifications for machinery manufacturers - Incorporates Amendment A1: 2008
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 953 + A1 Safety of machinery - Guards - General requirements for the design and construction of fixed and movable guards - AMD: April 30, 2009
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN 1012-1 Compressors and vacuum pumps - Safety requirements Part 1: Air compressors
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN ISO 14122-3 + A1 Safety of machinery - Permanent means of access to machinery - Part 3: Stairways, stepladders and guard-rails - AMD: August 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 1846-2 + A1 Firefighting and rescue service vehicles Part 2: Common requirements - Safety and performance - CORR: November 30, 2010; AMD: August 31, 2013
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60204-1 + A1 Safety of machinery. Electrical equipment of machines. Part 1: General requirements - AMD: April 30, 2009; CORR: May 31, 2010
- IEC 61000-6-1 Electromagnetic compatibility (EMC) – Part 6-1: Generic standards – Immunity for residential, commercial and light-industrial environments - Edition 2.0
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- BSI BS EN 60839-11-2 Alarm and electronic security systems Part 11-2: Electronic access control systems - Application guidelines
- CEI EN 50132-5-3 Alarm systems - CCTV surveillance systems for use in security applications Part 5-3: Video transmission - Analogue and digital video transmission
- IEC 62315-1 DTV profiles for uncompressed digital video interfaces Part 1: General - Edition 1.0
- DIN EN 1012-1 Compressors and vacuum pumps - Safety requirements - Part 1: Air compressors
- Картотека зарубежных и международных стандартов
Comitato Elettrotecnico Italiano
Alarm systems - CCTV surveillance systems for use in security applications Part 5-3: Video transmission - Analogue and digital video transmission
N EN 50132-5-3
Annotation
The purpose of the transmission system in a closed circuit television (CCTV) installation is to provide reliable transmission of video signals between the various CCTV equipments in security, safety and monitoring applications.
Along with high-resolution video interfaces and transmission, the analogue video signals are still in use today for video transmission and offer interlaced scanning and the film aspect ratio of 4:3.
The complexity of a video transmission system varies in accordance with the requirements of the installation.
Examples of the different types of video transmission systems covered by this European Standard are as follows:
a) using dedicated cable transmission media:
- coaxial cable;
- twisted pair cable;
- fibre optic cable;
b) using wireless transmission methods:
- microwave;
- infrared;
- radio transmission;
NOTE 1 These transmission methods apply to non-compressed video signals.
NOTE 2 Multiple analogue video signals may be combined in one physical transmission path using multiplexing techniques.
