<abstract xmlns="http://www.w3.org/1999/xhtml">

<p>A method of accuracy error compensation for the time interval is examined, allowing to decrease the dependence of accuracy error on the duration of measured intervals and minimising the influence of destabilising factors – ambient temperature changes and the initial deviation of the meter clock generator frequency from the nominal value. The compensation method is based on a calibration procedure that measures precise time intervals under conditions of changing ambient temperature. Then the dependence of the accuracy error on temperature for a particular meter is recorded. Based on these data, a correction table is compiled containing correction factors and temperature values at which these factors were determined. Under real measurement conditions, the correction factor corresponding to the current temperature is determined from the table for measured result correction. The table with correction factor values could be stored in the memory of the meter or processing computer. Experimental verification of the method showed that applying a correction for a meter with a standard XO class clock generator (certificated instability of ±50 ppm) could obtain an equivalent clock generator instability of ±0.15 ppm. The application of the method is efficient in cases where the use of high-end clocking to ensure the required measurement accuracy is not economically feasible.</p>
</abstract>

A method of accuracy error compensation for the time interval is examined, allowing to decrease the dependence of accuracy error on the duration of measured intervals and minimising the influence of destabilising factors – ambient temperature changes and the initial deviation of the meter clock generator frequency from the nominal value. The compensation method is based on a calibration procedure that measures precise time intervals under conditions of changing ambient temperature. Then the dependence of the accuracy error on temperature for a particular meter is recorded. Based on these data, a correction table is compiled containing correction factors and temperature values at which these factors were determined. Under real measurement conditions, the correction factor corresponding to the current temperature is determined from the table for measured result correction. The table with correction factor values could be stored in the memory of the meter or processing computer. Experimental verification of the method showed that applying a correction for a meter with a standard XO class clock generator (certificated instability of ±50 ppm) could obtain an equivalent clock generator instability of ±0.15 ppm. The application of the method is efficient in cases where the use of high-end clocking to ensure the required measurement accuracy is not economically feasible.

Compensation of Accuracy Error for Time Interval Measurements

Latvian Journal of Physics and Technical Sciences

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

{"article-title":"Compensation of Accuracy Error for Time Interval Measurements"}

A method of accuracy error compensation for the time interval is examined, allowing to decrease the dependence of accuracy error on the duration of measured...

Compensation of Accuracy Error for Time Interval Measurements

Publié en ligne: 10 févr. 2024

Pages: 43 - 51

DOI: https://doi.org/10.2478/lpts-2024-0005

Mots clés
Accuracy error compensation, clock generator, correction of measurement results, measurement of time intervals

© 2024 V. Bespal’ko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Compensation of Accuracy Error for Time Interval Measurements

Publié en ligne: 10 févr. 2024

Pages: 43 - 51

DOI: https://doi.org/10.2478/lpts-2024-0005

Mots clésAccuracy error compensation, clock generator, correction of measurement results, measurement of time intervals

© 2024 V. Bespal’ko et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

Mots clés
Accuracy error compensation, clock generator, correction of measurement results, measurement of time intervals