ISO 80000-3:2006 gives names, symbols and definitions for quantities and units of space and time. Where appropriate, conversion factors are also given.
DS/EN ISO 80000-3:2013 history
2020DS/EN ISO 80000-3:2020 Quantities and units – Part 3: Space and time (ISO 80000-3:2019)
2012DS/EN 50132-5-1:2012 Alarm systems - CCTV surveillance systems for use in security applications - Part 5-1: Video transmission - General video transmission performance requirements