IEC-61689 Complete Document History
Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz

Complete Current Edition:
   EDITION 4.0 - Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz - March 1, 2022

Obsolete Revision Information:
   EDITION 3.0 - Ultrasonics - Physiotherapy systems - Field specifications and methods of measurement in the frequency range 0,5 MHz to 5 MHz - Feb. 26, 2013
   EDITION 2.0 - THE FREQUENCY RANGE 0,5 MHZ TO 5 MHZ - Aug. 1, 2007