NASA NTRS · 19840019961
Microdensitometer electronics modification
Abstract
Minor modifications of electronic components in the PDS 1010A microdensitometer are discussed. The operational requirements and performance limitations of the PDS are noted. Replacement of the photomultiplier and front-end analog circuitry significantly improved the photometric performance of the PDS. The improvement in density repeatability is marked, and the permissible density slew speed is greatly increased.
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Hewitt, A. V.. 1984-07-01. Microdensitometer electronics modification. https://ntrs.nasa.gov/citations/19840019961
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