The following abbreviations are used in CCTV & Intruder Alarm Installation:

The following abbreviations appear in this Code of Practice:

ATEX Explosive Atmospheres (from ATmosphères Explosives)
BS British Standard
BSI British Standards Institution
BSIA British Security Industry Association
CAD Computer Aided Design / Draughting
CAST (Home Office) Centre for Applied Science and Technology
CCTV Closed Circuit Television
CENELEC Comité Européen de Normalisation Électrotechnique; (European Committee for Electrotechnical Standardization)
DPA Data Protection Act
EN European Standard
FAT Factory Acceptance Test
HD High Definition
HOSDB Home Office Scientific Development Branch (former name of CAST)
IEC International Electrotechnical Committee (Worldwide standards body)
IP Internet Protocol or Ingress Protection Rating (according to context)
ISO International Standards Organisation
ONVIF Open Network Video Interface Forum
OR Operational Requirement
PAL Phase Alternating Line (TV encoding system)
PoE Power over Ethernet
PSIA Physical Security Interoperability Alliance
PTZ Pan-Tilt-Zoom
PVC Polyvinyl Chloride
RAID Redundant Array of Independent Disks
RVRC Remote Video Response Centre
SC CoP Surveillance Camera Code of Practice
SCC Surveillance Camera Commissioner
SDP System Design Proposal
SXGA+ Super Extended Graphics Array Plus
TX Transmission