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topic/construction/electrical
type/encyclopedia
Low Voltage Systems

Low Voltage Systems

[!info] See Also

Radio Repeater Systems

Bi-Directional Amplifier (BDA)

Used to facilitate radio (usually cellular) communication where it is inhibited by the facility structure.

Consists of a donor antenna, bi-directional amplifier, and any number of remote units where hard-wired connections to the BDA can be made.

Distributed Antenna System (DAS)

Used to extend wireless communication throughout a facility.

While active DAS can be said to require a BDA system, in practice a "DAS System" almost always refers to all the equipment required for its operation.

Security Systems

Electronic Security System (ESS)

Intrusion Detection System (IDS)

Access Control System (ACS)

Video Surveillance

[!info] Also Known As

  • Closed-Circuit Television (CCTV)

Communications

Telecommunications (Telecom)

[!info] Also Known As

  • Voice/Data

Structured Cabling:

Refers to a standardized architecture of telecommunications cabling and equipment.

Architecture is star-shaped, paralleling building electrical distribution.

  • Main Distribution Frame (MDF)
  • Intermediate Distribution Frames (IDFs)

Community Antenna Television (CATV)

Used to deliver radio frequency (RF) or digital television programming signals from a single antenna to multiple devices. A building CATV system may include the "picking antenna" or instead include connection to a local utility's.

Sound Systems

Intercommunications (Intercom)

Audio Visual (AV)