Time Encoder.

Abstract

This circuit was designed and produced to record every minute, on film, a time code having duration of 1 second; this time code, known as the 'NASA Time Code' is continually repeated every second. The circuit must also be able to record synchronization pulses every 100 milliseconds for the portion of the minute not used by the time code. The combination of these two signals is applied to two light-emitting diodes so as to convert electrical data into usable optical signals. This technical note provides a detailed description on the operation of the time encoder. A technique employed to simulate the time code with the aid of a PDP-11 mini-computer is also presented and is necessary to verify the proper operation of the circuit. (Author)

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Document Details

Document Type
Technical Report
Publication Date
Aug 01, 1979
Accession Number
ADA079586

Entities

People

  • Francois Gauthier

Organizations

  • Defence Research and Development Canada

Tags

Communities of Interest

  • Advanced Electronics

DTIC Thesaurus Topics

  • Abstracts
  • Circuit Boards
  • Circuits
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  • Detectors
  • Instrumentation
  • Integrated Circuits
  • National Security
  • Printed Circuit Boards
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  • Sequences
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  • Specifications
  • Standards
  • Transistors
  • Transitions

Fields of Study

  • Engineering

Readers

  • Computer Science/Computer Engineering/Data Science/Digital Signal Processing.