GATED FREQUENCY DIVIDING CIRCUIT FOR IMPROVED RESOLUTION IN DIGITAL TIME INTERVAL MEASUREMENTS

Abstract

A circuit technique is described for eliminating the one cycle uncertainty that normally exists in a time interval measurement made by counting the number of cycles of a crystal oscillator that occur between start and stop pulses. A high frequency crystal oscillator is used in conjunction with a gatable frequency dividing circuit (describe in detail) to yield a train of highly stable timing pulses that begins in phase with the start pulse. The technique is useful in the frequency range from one to several hundred Mc, and can be extended above 1 kMc. (Author)

Document Details

Document Type
Technical Report
Publication Date
Dec 01, 1961
Accession Number
AD0276214

Entities

People

  • Walter O. Jr. Lecroy

Organizations

  • Columbia University

Tags

DTIC Thesaurus Topics

  • Crystal Oscillators
  • Electronic Equipment
  • Frequency
  • Intervals
  • Measurement
  • Oscillators
  • Time Intervals
  • Uncertainty

Fields of Study

  • Physics

Readers

  • Applied Combinatorial Optimization and Logic Circuit Design.
  • Electronics Engineering
  • Radar Systems Engineering.