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Factors affecting dwell times on digital displayingA series of exploratory tests were conducted to investigate the effects of advanced display formats and display media on pilot scanning behavior using Langley's oculometer, a desktop flight simulator, a conventional electro-mechanical meter, and various digital displays. The primary task was for the test subject to maintain level flight, on a specific course heading, during moderate turbulence. A secondary task of manually controlling the readout of a display was used to examine the effects of the display format on a subject's scan behavior. Secondary task scan parameters that were evaluated were average dwell time, dwell time histograms, and number of dwells per meter change. The round dial meter demonstrated shorter dwell times and fewer dwells per meter change than the digital displays. The following factors affected digital display scanning behavior: (1) the number of digits; (2) the update rate of the digits; (3) the display media; and (4) the character font. The size of the digits used in these tests (0.28 to 0.50 inches) did not affect scan behavior measures.
Document ID
19850016411
Acquisition Source
Legacy CDMS
Document Type
Technical Memorandum (TM)
Authors
Williams, A. J.
(NASA Langley Research Center Hampton, VA, United States)
Harris, R. L., Sr.
(NASA Langley Research Center Hampton, VA, United States)
Date Acquired
September 5, 2013
Publication Date
April 1, 1985
Subject Category
Behavioral Sciences
Report/Patent Number
NASA-TM-86406
NAS 1.15:86406
Accession Number
85N24722
Funding Number(s)
PROJECT: RTOP 505-35-13
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.
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