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
Hardcopy , PDF
English
15-08-1993
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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
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.
| Committee |
W/-
|
| DevelopmentNote |
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)
|
| DocumentType |
Standard
|
| Pages |
20
|
| PublisherName |
British Standards Institution
|
| Status |
Current
|
| Supersedes |
| Standards | Relationship |
| NBN EN 60444-4 : 1997 | Identical |
| I.S. EN 60444-4:1999 | 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 |
| 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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