IEVref: 171-01-03 ID: Language: en Status: Standard Term: signal Synonym1: Synonym2: Synonym3: Symbol: Definition: physical phenomenon whose presence, absence, or variation is considered as representing informationNote 1 to entry: The physical phenomenon can be, for instance, an electromagnetic or acoustic wave, and variation can be, for instance, that of an electric field, a voltage or a sound pressure. Note 2 to entry: The information is generally represented by one or more quantities, which are called the "characteristics carrying information". Note 3 to entry: Specific definitions are given in IEV 351-41-17 and IEV 714-06-01 for use of the term "signal" in the domains of control technology and signalling in telecommunication, respectively. Publication date: 2019-03-29 Source: Replaces: Internal notes: CO remarks: TC/SC remarks: VT remarks: Domain1: Domain2: Domain3: Domain4: Domain5: