• IEC 60689:1980

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

    Measurements and test methods for 32 kHz quartz crystal units for wrist watches and standard values

    Available format(s):  Hardcopy, PDF, PDF 3 Users, PDF 5 Users, PDF 9 Users

    Superseded date:  31-12-2021

    Language(s):  English - French, Russian

    Published date:  01-01-1980

    Publisher:  International Electrotechnical Committee

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    Abstract - (Show below) - (Hide below)

    Applies to 32 kHz quartz crystal units for wrist watches. Gives methods of measurement of resonance frequency, resonance resistance, frequency-temperature dependence and frequency pulling. Lays down test methods in accordance with IEC 68-2-6, 68-2-20, 68-2-21 and 68-2-27.

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    Committee TC 49
    Document Type Standard
    Publisher International Electrotechnical Committee
    Status Superseded
    Superseded By
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