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Picosecond-precision multichannel autonomous time and frequency counter.

R Szplet1, P Kwiatkowski1, K Różyc1

  • 1Department of Electronics, Military University of Technology, Warsaw 00-908, Poland.

The Review of Scientific Instruments
|January 1, 2018
PubMed
Summary
This summary is machine-generated.

This study introduces a multichannel time interval and frequency counter with high precision (4.5 ps) and speed (91.2 M timestamps/s). It offers advanced measurement capabilities for precise clock and oscillator analysis.

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Area of Science:

  • Electrical Engineering
  • Metrology
  • Instrumentation

Background:

  • Precise time interval and frequency measurements are critical in various scientific and engineering fields.
  • Existing instruments may lack the required precision, speed, or multichannel capabilities for advanced applications.

Purpose of the Study:

  • To design, implement, and test a novel multichannel time interval and frequency counter.
  • To achieve high precision, wide measurement range, and high speed in a desktop instrument.
  • To provide comprehensive functionality for clock and oscillator analysis.

Main Methods:

  • Utilized time stamping with period counting and two-stage interpolation for time interval measurement.
  • Employed the reciprocal method for frequency measurements up to 3.0 GHz.
  • Integrated a field-programmable gate array (FPGA) for the 8-channel measurement module and an ARM-Cortex microcontroller for control.

Main Results:

  • Achieved time interval measurement precision better than 4.5 ps and a speed of up to 91.2 × 10^6 timestamps/s.
  • Demonstrated frequency measurement capability up to 3.0 GHz.
  • Enabled evaluation of frequency stability (Allan deviation) and phase variation (time interval error).

Conclusions:

  • The developed multichannel counter meets the demands for high-precision, high-speed time interval and frequency measurements.
  • Its versatile functionality and user-friendly interface make it suitable for diverse metrology applications.
  • The instrument provides a robust solution for characterizing clocks and oscillators.