The production of low co t IR focal plane array cameras at Cincinnati Electronics has generated a need for an equally low cost data collection system A data capture board is described that has been developed to allow easy interfacing to CE s ( amera products and to provide control and status signals required for detector characterizations The board may be used in any ISA bus compatible computer and provides a simple 16 bit parallel data interface that O( rates up to 4 megawords/sec Up to 8 megawords is stored on-board and multiple boards may be operated concurrently for systems that have multiple OUtpUt5. In addition to the ISA bus, the board has been successfully interfaced to an HP 425S UNIX workstation.
This paper provides a review of a custom multiplexer circuit designed for use with a 256 element InSb linear array in the CRAF/Cassini VIMS instruments. The requirements, operation noise model and test results from a prototype 1 x 64 array are discussed. The infrared focal plane array (FPA) preliminary design and the impact of the new multiplexer on the instruments' predicted performance will be discussed. Emphasis will be placed on the multiplexer that was designed for the CRAF/Cassini missions.The FPA assembly combines electronic and optical components into a single hermetically sealed hybrid package. The detector configuration is that of a linear dual-multiplexed indium antimonide array with 256 elements, each 103 jmix 200 im on 123 tim centers.
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