This international standard is applicable to measurements and test methods for tuning fork quartz resonators in the range 10 kHz to 200 kHz and to standard values for frequency control and selection.
NF C93-610*NF EN 60689:2014 history
2014NF C93-610*NF EN 60689:2014 Measurement and test methods for tuning fork quartz crystal units in the range from 10 kHz to 200 kHz and standard values