• BS 7681-4(1993) : 1993 AMD 9660

    Superseded A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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

    Available format(s): 

    Superseded date:  15-10-1997

    Language(s): 

    Published date:  23-11-2012

    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 CL
    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 RL versus frequency,
         for various values of CL
    A7. Relative measurement error of C1 as a function of
         C1 for various frequency measurement errors
         CO = 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 CO = 3 pF; CL1 = 15 pF; CL2 = 30 pF

    Abstract - (Show below) - (Hide below)

    Specifies a simple method of measuring load resonance frequency fL and load resistance Rl in the frequency range up to 30 MHz. Includes detailed diagrams. AMD 9660 RENUMBERS THIS STANDARD

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

    Committee ECL/11
    Development Note Renumbered and superseded by BS EN 60444-4 (11/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Superseded
    Superseded By
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