Is applicable to ultrasonic Doppler foetal heartbeat detectors which generate a single ultrasound beam and consist of a hand-held probe which is applied to the maternal abdomen to obtain information on foetal heart activity by means of the Doppler method using continuous wave (c.w) or quasi-continuous wave ultrasound. Establishes - methods of measurement of performances - requirements for the performance and the - reporting of performance
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EN 60601-1:1990 Sähkökäyttöiset lääkintälaitteet. Yleiset turvallisuusvaatimukset
EN 61101:1993 The absolute calibration of hydrophones using the planar scanning technique in the frequency range 0,5 MHz to 15 MHz
EN 61102:1993 Measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0,5 MHz to 15 MHz
EN 60601-1:1990 Sähkökäyttöiset lääkintälaitteet. Yleiset turvallisuusvaatimukset
EN 61101:1993 The absolute calibration of hydrophones using the planar scanning technique in the frequency range 0,5 MHz to 15 MHz
EN 61102:1993 Measurement and characterisation of ultrasonic fields using hydrophones in the frequency range 0,5 MHz to 15 MHz
EN 61157:1994 Requirements for the declaration of the acoustic output of medical diagnostic ultrasonic equipment
EN 61161:1994 Ultrasonic power measurement in liquids in the frequency range 0,5 MHz to 25 MHz