ISSN 1991-2927
 

ACP № 2 (56) 2019

Improving Quality of Time Parameters of Vernier-pulse Time-digital Converters

Gennadii Nikolaevich Abramov, Togliatti State University, Doctor of Engineering, Professor at the Department of Industrial Electronics at Togliatti State University; Honored Worker of Higher Professional Education of the Russian Federation; an author of articles and patents in the field of analog-to-digital and digital-to-analog conversion of monopulse electrical signals (MIES). [e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ]G. Abramov,

Iurii Gennadievich Abramov, Labyrinth Volga, LLC, got the Master’s Degree in Engineering and Technology with specialty in Electronic Devices and Equipment; graduated from Togliatti State University; a system administrator at Labyrinth Volga, LLC; an author of scientific publications and patents in the field of analog-to-digital conversion of MIES parameters. [e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it. ]I. Abramov

Improving Quality of Time Parameters of Vernier-pulse Time-digital Converters 000_13.pdf

Vernier - pulse time-digital converters (TDC) are used for the conversion of time intervals into the code subnanosecond resolution in many areas of science and technology. Disadvantages include low speed and large dead time of conversion, which are defined directly by the vernier - pulse method behind the basis of their work and the need of the total digital conversion result calculation. Therefore, improving the performance and reducing the dead time of vernier - pulse TDC while maintaining their resolution that can significantly extend the possibility of using TDC data in the problems of time intervals transformation become urgent tasks. The article deals with a method for improving twice the time parameters (decrease in conversion time and, accordingly, the conversion dead time) of vernier-pulse TDC by increasing the period following the pulse-counting sequence of the discrete transformation. Replacing the process of calculating the overall digital result of the conversion in the arithmetic logic unit (ALU) to the logical operation of summation result of the digital conversion with twice the value of the digital result just provides a further reduction of the additional value of the dead time conversion. However, the exclusion of the ALU from the conversion process reduces the additional hardware expenses of vernier-pulse TDC and simplifies the process of determining the conversion result. The possibility of determining the overall digital result of the conversion in the same way and in the vernier-pulse TDC executed without increasing the period of starting pulse-counting sequence at the discrete transformation is shown. The method suggested is recommended for halving the time of transformation and reducing the dead time vernier-pulse TDC double interpolation more than twice, for example, in the universal time slot counter NR5370L manufactured by Hewlett Packard.

Shock generator excitation recycle generator, transformation discretization, time-digital converter, time interval, starting pulse, stopping pulse, pulse-counting sequence.

© FRPC JSC 'RPA 'Mars', 2009-2018 The web-site runs on Joomla!