Conclusions
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1.
In analog and frequency-to-pulse subtraction, the error in direct measurements will be greater in magnitude than the error in balancing measurement.
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2.
In the case of digital subtraction, the errors in direct measurement and balancing measurement will be the same.
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3.
When frequency-to-pulse converters are employed, the error will depend on the absolute value of the base signal amplitude for any method of subtraction in direct measurements.
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4.
In the case of frequency-to-pulse subtraction and direct measurements, rigid requirements must be imposed on the equality of the coefficients of the forward and backward conversions.
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5.
In the case of frequency-pulse subtraction, it is required that the measurement time not be shorter than the period of difference frequency, so that the error will not be greater than specified, and there will be no point in carrying on the measurements beyond the integration period.
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Literature cited
A. L. Gurevich, L. A. Rusinov, G. V. Ivanova, and N. A. Syagaev, Pribory i Sistemy Upravleniya, No. 7 (1967).
W. A. Wisemen, Laboratory Equipment Digest, No. 5 (1964).
L. A. Kolomytsev, Automation of Chemical and Petrochemical Production Processes, No. 2 [in Russian], NIIT ÉKhIM (1965).
É. I. Gitis, Data Converters for Electronic Digital Computer Devices [in Russian], GÉI, Moscow (1961).
V. N. Khlistunov, Fundamentals of Digital Electrical Measurements and Digital Converters [in Russian], Énergiya, Moscow (1966).
Additional information
Translated from Izmeritel'naya Tekhnika, No. 2, pp. 20–22, February, 1971.
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Gurevich, A.L., Kolomytsev, L.A. & Plutes, É.S. Errors in zero correction of integrable functions. Meas Tech 14, 207–210 (1971). https://doi.org/10.1007/BF00994681
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DOI: https://doi.org/10.1007/BF00994681