Measurement of quartz crystal unit parameters by zero phase technique in a π-network - Part 1: Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a π-network (IEC 60444-1:1986 + A1:1999); German version EN 60444-1:1997 + A1:1999
Edition 2000-09

Measurement of quartz crystal unit parameters by zero phase technique in a pi-network - Part 4: Method for the measurement of the load resonance frequency fL, load resonance resistance RL and the calculation of other derived values of quartz crystal units, up to 30 MHz (IEC 60444-4:1988); German version EN 60444-4:1997
Edition 1997-10

Measurement of quartz crystal unit parameters - Part 7: Measurement of activity and frequency dips of quartz crystal units (IEC 60444-7:2004); German version EN 60444-7:2004
Edition 2004-11

Measurement of quartz crystal unit parameters - Part 11: Standard method for the determination of the load resonance frequency fL and the effective load capacitance CLeff using automatic network analyzer techniques and error correction (IEC 60444-11:2010); German version EN 60444-11:2010
Edition 2011-06

Underwater acoustics - Hydrophones - Properties of hydrophones in the frequency range 1 Hz to 500 kHz (IEC 60500:2017); German version EN 60500:2017
Edition 2018-03

Methods of measurement for radio equipment used in satellite earth stations - Part 2: Measurements for sub-systems; section 5: Frequency modulators (IEC 60510-2-5:1992); German version EN 60510-2-5:1994
Edition 1994-09

Methods of measurement for radio equipment used in satellite earth stations - Part 2: Measurements for sub-systems; section 5: Frequency demodulators (IEC 60510-2-6:1992); German version EN 60510-2-6:1994
Edition 1994-09

Methods of measurement for radio equipment used in satellite earth stations - Part 3: Methods of measurement on combinations of sub-systems; section 4: Measurements for frequency division multiplex (f.d.m.) transmission (IEC 60510-3-4:1992); German version EN 60510-3-4:1994
Edition 1994-09

Safety in electroheat installations - Part 9: Particular requirements for high-frequency dielectric heating installations (IEC 60519-9:2005); German version EN 60519-9:2005
Edition 2006-06

Medical electrical equipment - Part 2-2: Particular requirements for the basic safety and essential performance of high frequency surgical equipment and high frequency surgical accessories (IEC 60601-2-2:2017); German version EN IEC 60601-2-2:2018
Edition 2018-12