Design Circuits to Facilitate Pre-I&T Inspection

During Mars Exploration Rover (MER) system integration and test, it was discovered that two Rover Electronics Module (REM) heater circuits were miswired during fabrication. In addition to the lack of an ATLO test to screen such defects, testability was further constrained by inadequate test points for measuring circuit resistance. Provide for the “buzzing out” of each circuit after the build, and design in sufficient test points to get proper access to circuit resistances.

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