• BS EN 60444-1:1997

    Current The latest, up-to-date edition.

    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

    Available format(s):  Hardcopy, PDF

    Language(s):  English

    Published date:  15-08-2000

    Publisher:  British Standards Institution

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

    Committees responsible
    National foreword
    1 Scope
    2 Definition of resonance frequency
    3 Reference plane and shielding box
    4 Principle of measurement
    5 Measuring circuit
          5.1 The p-network
          5.2 Accessories of the p-network
          5.3 Associated equipment
    6 Method of measurement
          6.1 Initial calibration of the p-network
          6.2 Frequency and resistance measurement
    Appendix A - Additional information on accuracy
    Annex B (normative) updating of some formulae of Appendix A
    Figure 1
    Figure 2
    Figure 3 - Plot showing the phase change from the value at
               25 O versus reference resistor values from 0 to
               100 O AT 10 MHz, 50 MHz, 100 MHz and 200 MHz.
               Measuring circuit according to, Figure 1 page 4
    Figure 4 - Reference resistors and shorting blank
    Figure 5a
    Figure 5a
    Figure A.1
    Figure A.2
    Figure A.3
    Figure A.4
    Figure A.5
    Figure A.6
    Figure A.7
    Figure A.8 - A typical phase/frequency variation of an
                 adjusted p-network with a 25 O reference
    Figure A.9 - Typical p-network
    Figure A.10 - Detail of network assembly
    Figure A.11 - Dimensions of contacting plates and earthed
                  shield; x indicates position of rod and disk
                  centers of p-network
    Figure A.12 - Position of the reference resistor with
                  respect to the network contacting plates
    Figure A.13 - Other design of a p-network

    Abstract - (Show below) - (Hide below)

    Defines a simple method for measuring resonance frequency and resonance resistance of quartz crystal units, and establishes a suitable measuring network.

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

    Committee W/-
    Development Note Renumbers and supersedes BS 7681-1(1993). 1997 version incorporates amendment 9657 to BS 7681-1(1993). Also numbered as IEC 60444-1. Supersedes 97/202227 DC. (04/2005)
    Document Type Standard
    Publisher British Standards Institution
    Status Current

    Standards Referenced By 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 60444-4:1997 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
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