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IEC
IEC 60489-1:1983/AMD2:1999
En Vigor
1999-05-27
Amendment 2 - Methods of measurement for radio equipment used in the
mobile services - Part 1: General definitions and standard conditions of measurement
IEC
IEC 60994:1991/COR1:1997
En Vigor
1997-04-28
Corrigendum 1 - Guide for field measurement of vibrations and pulsations
in hydraulic machines (turbines, storage pumps and pump-turbines)
ISO
ISO/IEC 9541-4:2009
En Vigor
2009-03-23
Information technology — Font information interchange — Part 4:
Harmonization to Open Font Format
IEC
IEC TR 61511-4:2020
En Vigor
2020-02-19
Functional safety - Safety instrumented systems for the process industry
sector - Part 4: Explanation and rationale for changes in IEC 61511-1
from Edition 1 to Edition 2
