• I.S. EN 60444-4:1999

    Current The latest, up-to-date edition.

    MEASUREMENT OF QUARTZ CRYSTAL UNIT PARAMETERS BY ZERO PHASE TECHNIQUE IN A PI-NETWORK - METHOD FOR THE MEASUREMENT OF THE LOAD RESONANCE RESISTANCE FL, LOAD RESONANCE RESISTANCE RL AND THE CALCULATION OF OTHER DERIVED VALUES OF QUARTZ CRYSTAL UNITS, UP TO 30 MHZ

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    Published date:  12-01-2013

    Publisher:  National Standards Authority of Ireland

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    Table of Contents - (Show below) - (Hide below)

    Committees responsible
    National foreword
    Method
    1 Scope
    2 Measuring circuit
    3 Method of measurement
    Appendix
    A Recommendations regarding the use of load capacitors
    Figures
    A1 Typical load capacitor with carrier
    A2 Method of insertion of load capacitor into pi-network
    A3 Circuit diagram of pi-network including load
        capacitor C1
    A4 Load capacitance inaccuracy as a function of frequency,
        for a load capacitance of 30 pF inclusive of calibration
        inaccuracy and residual inductance effects (Worst case
        situation)
    A5 Relative measurement error of fL versus crystal
        pulling sensitivity for various frequencies at a load
        capacitance of 30 pF
    A6 Relative measurement error of R1 versus frequency, for
        various values of C1
    A7 Relative measurement error of Cl as a function of
        frequency
    A8 Relative measurement error of C1 as a function of
        C1 for various frequency measurement errors C0 =
        5 pF; CL1 = 15 pF; CL2 = 30 pF
    A9 Relative measurement error of C1 as a function of
        C1 for various values of quality factor Q C0 = 3 pF;
        CL1 = 15pF; CL2 = 30 pF
    Annex ZA (normative) Normative references to international
    publications with their corresponding European publications

    Abstract - (Show below) - (Hide below)

    Covers a simple method of measuring load resonance frequency. The method uses the change in resonance frequency which occurs when a load capacitance is inserted in series with the crystal unit.

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    Development Note For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
    Document Type Standard
    Publisher National Standards Authority of Ireland
    Status Current
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