TEST AND EVALUATION OF ELECTRONIC IMAGE GENERATION AND PROJECTION DEVICES. VOLUME II. EVALUATION OF TELEVISION SYSTEMS.

Abstract

This report presents data from an evaluation of the 7WP4 Projection Cathode Ray Tube (CRT) operated in the high resolution mode of 1029-line scanning configuration to produce a suitable display for astronautical simulation training. The capabilities of the CRT were first predicted by theoretical analysis conducted while the tube was in actual operation, then the actual display was analyzed to confirm the theoretical predictions. The test image projected on a screen was viewed by an observer television camera to reduce the displayed image to electronic waveforms which formed the basis for an accurate evaluation. The results obtained during the practical evaluation of the CRT in all ways confirmed the theoretical prediction with a high level of brightness, and adequate grey scale linearity. Spot size was found to vary inversely with the scanning speed; line width is reduced at the faster scanning rates. Resolving capability, limited by spot size, is shown related to both brightness and scanning. (Author)

Document Details

Document Type
Technical Report
Publication Date
Nov 01, 1965
Accession Number
AD0628693

Entities

People

  • James D. Basinger
  • John H. Harshbarger

Tags

DTIC Thesaurus Topics

  • Brightness
  • Cameras
  • Cathode Ray Tubes
  • Gray Scale
  • High Resolution
  • Line Scanning
  • Scanning
  • Television Cameras
  • Television Systems
  • Test And Evaluation

Fields of Study

  • Physics

Readers

  • Human-Computer Interaction (HCI).
  • Radar Systems Engineering.
  • Systems Analysis and Design

Technology Areas

  • Microelectronics
  • Space
  • Space - Hall-Effect Thruster