21.		EN 50248 : December 1997: characteristics of DAB receivers / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
22.		EN 50117-1/A1 : coaxial cables used in cabled distribution networks: part 1: generic specification / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
23.		EN 50083 -6 : December 1997: cable networks for television signals, sound signals and interactive services: part 6: optical equipment / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
24.		DRAFT EN 50160 prAC : voltage characteristics of electricity supplied by public distribution system / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
25.		EN 50221 : common interface specification for conditional access and other digital video broadcasting decoder applications / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
26.		FINAL DRAFT EN 50083 -1 / A2 : December 1997: cabled distribution systems for television sound and interactive multimedia signals: part 1: safety requirements / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
27.		EN 55014-1/A1 : electromagnetic compatibility - requirements for household appliances, electric tools and similar apparatus: part 1: emission - product family standard: (CISPR 14-1: 1993/A1: 1996 + corrigendum 1997) / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
28.		projet EN 50160 prAA : caractéristiques de la tension fournie par les réseaux publics de distribution / Comité Européen de Normalisation Electrotechnique Data Publicação: 1997 Tema: Normas
29.		FINAL DRAFT prEN 50255 : digital audio broadcasting system: specification of the receiver data interface (RDI) / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas
30.		HD 624 .9 S1 : materials used in communication cables: part 9: Cross-linked PE insulation compounds / European Commitee for Electrothecnical Standardization Data Publicação: 1997 Tema: Normas