EN 60689:2009

1 Scope
2 Normative references
3 Overview
  3.1 General
  3.2 Applied frequency range
  3.3 Measurement method
  3.4 Load capacitance
  3.5 Recommended drive level
  3.6 Measurement conditions
  3.7 Measurement of frequency-temperature
      characteristics
  3.8 Load capacitance frequency characteristics
4 Measurement methods
  4.1 Method A
      4.1.1 Vector network analyzer/vector impedance
            analyzer
      4.1.2 Block diagram
      4.1.3 Specifications for vector network
             analyzer/vector impedance analyzer
      4.1.4 Test fixture
      4.1.5 Measurement of equivalent circuit
            constants
      4.1.6 Frequency pulling
  4.2 Method B
      4.2.1 General
      4.2.2 Block diagram
      4.2.3 Calibration
      4.2.4 Procedure
5 Measurement conditions
  5.1 General
  5.2 Measurement conditions
  5.3 Measurement of the frequency-temperature
      dependence
      5.3.1 General
      5.3.2 Block diagram
      5.3.3 Determination of the turnover point and
            parabolic coefficient beta (standard
            reference method)
      5.3.4 Measurement of the frequency versus
            temperature characteristics (mass
            production method)
      5.3.5 Frequency C[L] curve
6 Test and environmental examination
  6.1 Application of the definition of IEC 60122-1
  6.2 Magnetism - Influence of a magnetic field on the
      frequency
  6.3 Enclosure
  6.4 Measuring conditions and electric performance
      6.4.1 General
      6.4.2 Measurement conditions
      6.4.3 Standard values
Bibliography
Annex ZA (normative) - Normative references to
         international publications with their
         corresponding European publications

IEC 60689:2008(E) applies to measurements and test methods for tuning fork quartz crystal units in the range from 10 kHz to 200 kHz and standard values for frequency control and selection. This second edition cancels and replaces the first edition published in 1980. This edition constitutes a technical revision. It includes the following significant technical changes with respect to the previous edition: a) The title of the first edition is Measurements and test methods for 32 kHz quartz crystal units for wrist watches and standard values. The title is modified and the frequency range of this second edition is extended to the range from 10 kHz to 200 kHz. b) The Lissajous method is defined in the first edition as the standard measurement method. The PI network and bridge method are used in this second edition. c) The PI network has a transformer for impedance matching. This composition differs from that of IEC 60444-1.