This revision aligns with other lamp standards (e.g., SAE J584, SAE J585, SAE J586, CMVSS 108, SAE J1623, SAE J1383, SAE J2442, UNECE R50, UNECE R7, etc.). The layout of the documents is inspired by SAE J584. There is need to clarify the document and to better align it with SAE J575 test methods for lighting equipment. In this revision, sequentially, the test methods are first defined, and then the performance expectations are defined. The order of the tests now matches those of SAE J575. This is in line with the structures of SAE J584, SAE J585, and SAE J586.
This document was converted from an SAE Recommended Practice to an SAE Standard.
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Test equipment and instrumentation
Also known as: SAE J 278
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