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Pseudolog Digital-to-Analog ConverterSensitivity decreases by 10 at beginning of each input decade. Method conceived to convert binary-coded data to suitable linear form for stripchart recording. Strip-chart recordings obtained from typical pressure readings in a vacuum system during pumpdown. In reading curve, BCD digital vacuum-gage output processed by analog-to-digital converter in such way that only reading digits (but not range) appear in output. In range and reading, range also converted to analog and placed as most significant digit.
Document ID
19860000023
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Gooder, S. T.
Date Acquired
August 12, 2013
Publication Date
June 1, 1986
Publication Information
Publication: NASA Tech Briefs
Volume: 10
Issue: 1
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
LEW-14219
Accession Number
86B10023
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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