CSN EN IEC 61689 ed. 4

CSN EN IEC 61689 ed. 4 This document is applicable to ultrasonic equipment designed for physiotherapy containing an ultrasonic transducer generating continuous or quasi-continuous (e.g. tone burst) wave ultrasound in the frequency range 0,5 MHz to 5 MHz. This document only relates to ultrasonic physiotherapy equipment employing a single plane non-focusing circular transducer per treatment head, producing static beams perpendicular to the face of the treatment head.
Original English text of CSN EN Standard.
The price of the Standard included all amendments and correcturs.