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ECA 512

Standard Methods for Measurement of the Equivalent Electrical Parameters of Quartz Crystal Units, 1 kHz to 1 GHz

Organization:
ECIA - Electronic Components Industry Association
Year: 1983

Abstract: Methods are described which permit determination of fhe values of the equivalent electrical parameters of piezoelectric quartz crystal units, utilizing automated measuring equipment. The methods described make use of standard coaxial terminations, standard calibrated mismatched terminations, coaxial air-lines, and short-circuit terminations for both calibration of the instrument/ test fixture error terms, and for verification of instrument performance. These coaxial standards, designed for 50 ohm systems, are readily available, and can be standardized in terms of national standards of impedance over very wide frequency ranges.
The measurement methods described are intended to provide standard reference values of the electrical equivalent parameters. Manufacturers and users may employ any other methods of measurement de sired,10,12 however, when other methods are used, the values obtained shall be correlated to those obtained by the reference methods.
This standard is concerned only with the equivalent electrical network which approximates the admittance/ impedance characteristic of a crystal unit over a relatively narrow range of frequencies near an isolated mode of vibration, at a particular excitation level. Non-linear amplitude behavior, or the presence of interfering modes of vibration, not only interfere with the actual measurement, also render the accepted equivalent network representation invalid.
URI: https://yse.yabesh.ir/std/handle/yse/184848
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contributor authorECIA - Electronic Components Industry Association
date accessioned2017-09-04T18:01:48Z
date available2017-09-04T18:01:48Z
date copyright30590
date issued1983
identifier otherGAENCAAAAAAAAAAA.pdf
identifier urihttps://yse.yabesh.ir/std/handle/yse/184848
description abstractMethods are described which permit determination of fhe values of the equivalent electrical parameters of piezoelectric quartz crystal units, utilizing automated measuring equipment. The methods described make use of standard coaxial terminations, standard calibrated mismatched terminations, coaxial air-lines, and short-circuit terminations for both calibration of the instrument/ test fixture error terms, and for verification of instrument performance. These coaxial standards, designed for 50 ohm systems, are readily available, and can be standardized in terms of national standards of impedance over very wide frequency ranges.
The measurement methods described are intended to provide standard reference values of the electrical equivalent parameters. Manufacturers and users may employ any other methods of measurement de sired,10,12 however, when other methods are used, the values obtained shall be correlated to those obtained by the reference methods.
This standard is concerned only with the equivalent electrical network which approximates the admittance/ impedance characteristic of a crystal unit over a relatively narrow range of frequencies near an isolated mode of vibration, at a particular excitation level. Non-linear amplitude behavior, or the presence of interfering modes of vibration, not only interfere with the actual measurement, also render the accepted equivalent network representation invalid.
languageEnglish
titleECA 512num
titleStandard Methods for Measurement of the Equivalent Electrical Parameters of Quartz Crystal Units, 1 kHz to 1 GHzen
typestandard
page40
statusActive
treeECIA - Electronic Components Industry Association:;1983
contenttypefulltext
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