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High-resolution gray-scale recorderElectronic circuit makes it possible to obtain gray-scale recordings with good contrast and linearity over entire recording density range for ultrasonic testing unit. Electronic circuit produces square wave of constant voltage but of varying width. Frequency of square-wave pulses can be adjusted to determine optimum pulse frequency.
Document ID
19780000017
Acquisition Source
Legacy CDMS
Document Type
Other - NASA Tech Brief
Authors
Moorhead, P. E.
Davis, T. M.
Sorg, R. L.
Date Acquired
August 9, 2013
Publication Date
June 1, 1978
Publication Information
Publication: NASA Tech Briefs
Volume: 3
Issue: 1
ISSN: 0145-319X
Subject Category
Electronic Systems
Report/Patent Number
LEW-12783
Report Number: LEW-12783
ISSN: 0145-319X
Accession Number
78B10017
Distribution Limits
Public
Copyright
Work of the US Gov. Public Use Permitted.

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