• BS EN 60444-4:1997

    Current The latest, up-to-date edition.

    Measurement of quartz crystal unit parameters 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

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  15-08-1993

    Publisher:  British Standards Institution

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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)

    Defines a simple method for measurement of load resonance frequency fL and load resonance resistance RL, in the frequency range not in excess of 30 MHz. Permits calculation of load resonance frequency ranges and pulling sensitivity as laid down in IEC 122-1, Amd 1.

    General Product Information - (Show below) - (Hide below)

    Committee W/-
    Development Note Renumbers and supersedes BS 7681-4(1993) 1997 version incorporates amendment 9660 to BS 7681-4(1993) Also numbered as IEC 60444-4 (11/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current
    Supersedes

    Standards Referencing This Book - (Show below) - (Hide below)

    BS EN 60444-2:1997 Measurement of quartz crystal unit parameters Phase offset method for measurement of motional capacitance of quartz crystal units
    BS EN 60444-1:1997 Measurement of quartz crystal unit parameters Basic method for the measurement of resonance frequency and resonance resistance of quartz crystal units by zero phase technique in a π-network
    IEC 60122-2:1983 Quartz crystal units for frequency control and selection - Part 2: Guide to the use of quartz crystal units for frequency control and selection
    IEC 60302:1969 Standard definitions and methods of measurement for piezoelectric vibrators operating over the frequency range up to 30 MHz
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