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SN EN 60444-4 : 1997
Current
The latest, up-to-date edition.
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MEASUREMENT OF QUARTZ CRYSTAL UNIT PARAMETERS BY ZERO PHASE TECHNIQUE IN A PI-NETWORK - PART 4: METHOD FOR THE MEASUREMENT OF THE LOAD RESONANCE FREQUENCY F<(INDEX)L>, LOAD RESONANCE RESISTANCE R<(INDEX)L> AND THE CALCULATION OF OTHER DERIVED VALUES OF QUARTZ CRYSTAL UNITS, UP TO 30 MHZ
12-01-2013
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
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