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
Hardcopy
English
12-01-2013
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Only cited Standards give presumption of conformance to New Approach Directives/Regulations.
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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
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.
| DevelopmentNote |
For CENELEC adoptions of IEC publications, please check www.iec.ch to be sure that you have any corrigenda that may apply. (01/2017)
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| DocumentType |
Standard
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| Pages |
0
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| PublisherName |
National Standards Authority of Ireland
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| Status |
Current
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| Standards | Relationship |
| NBN EN 60444-4 : 1997 | Identical |
| IEC TR 60444-4:1988 | Identical |
| BS EN 60444-4:1997 | Identical |
| SN EN 60444-4 : 1997 | Identical |
| NF EN 60444-4 : 2001 | Identical |
| DIN EN 60444-4:1997-10 | Identical |
| EN 60444-4:1997 | Identical |
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