Normativa ISO UNE gratis

Fecha de publicación: 13/03/1991 Helical-scan video tape cassette system using 12,65 mm (0,5 in)magnetic tape on type Beta format – FM audio recording – Part 2:525 line-60 field systems IEC 61053-2:1991

Fecha de publicación: 13/03/1991 Helical-scan video tape cassette system using 12,65 mm (0,5 in)magnetic tape on type Beta format – FM audio recording – Part 1:625 line-50 field systems IEC 61053-1:1991

Fecha de publicación: 19/03/1991 Capacitors for use in tubular fluorescent and other discharge lamp circuits. Performance requirements IEC 61049:1991

Fecha de publicación: 19/03/1991 Transformers for tubular discharge lamps having a no-load output voltage exceeding 1000 V (generally called neon-transformers). General and safety requirements IEC 61050:1991

Fecha de publicación: 23/04/1991 Non-broadcast video tape recorders – Time base stability IEC 60756:1991

Fecha de publicación: 01/05/1991 Method for evaluating the low temperature flow properties of mineral insulating oils after ageing IEC 61065:1991

Fecha de publicación: 07/05/1991 Methods of measurement for radio transmitters – Part 13: Performance characteristics for FM sound broadcasting IEC 60244-13:1991

Fecha de publicación: 17/06/1991 Measurement techniques and operational adjustments of broadcast VTRs – Part 2: Special mechanical measurements and alignments IEC TR 61055-2:1991

Fecha de publicación: 20/06/1991 Measurement techniques and operational adjustments of broadcastVTRs – Part 1: Operational adjustments on analogue compositebroadcast VTRs IEC TR 61055-1:1991

Fecha de publicación: 01/07/1991 Methods or measurement for radio equipment used in the mobile services – Part 2: Transmitters employing A3E, F3E or G3E emissions IEC 60489-2:1991