Evaluation of a Proposed Alternative to the AN/TTC-39 Signaling Tones System.

Abstract

This experiment assessed the potential impact of signaling tones simplification on users of the AN/TTC-39 communications system. A significant (33 percent to 50 percent) reduction in learning time for full feature use was achieved over previously tested alternatives which are currently recommended by the manufacturer. The need to reduce overall system complexity was determined through both empirical data analysis and subjective means such as questionnaires. Identification was made of problem tones and tone situations responsible for a significant proportion of subscriber difficulty, and suggestions for remediation were offered. (Author)

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Document Details

Document Type
Technical Report
Publication Date
May 01, 1978
Accession Number
ADA058519

Entities

People

  • Larry A. Peterson

Organizations

  • Human Engineering Laboratory

Tags

Communities of Interest

  • Human Systems
  • Materials and Manufacturing Processes

DTIC Thesaurus Topics

  • Acoustic Communications
  • Adaptive Communications
  • Communication Switching Centers
  • Communication Systems
  • Communications Centrals
  • Data Analysis
  • Department Of Defense
  • Engineering
  • Human Factors Engineering
  • Intercommunication Systems
  • Plastic Explosives
  • Processing Equipment
  • Radio Equipment
  • Secure Communications
  • Telephone Systems
  • Terminals
  • Voice Communications

Readers

  • Cardiovascular Physiology
  • Instructional Design and Training Evaluation.
  • Systems Analysis and Design