The scope of this document is the development of a common receiver/fixture interface (RFI) specification that is based upon available commercial standards integrated under a common "open" architecture. This mechanical/electrical interface is intended to serve government/commercial interest for applications in test, system integration, manufacturing, monitoring, and other functional requirements that demand large contact densities and quick-disconnect mechanical operation. A joint technical forum has been operational since 1997 under the auspices of the IEEE Std 1505 RFI Working Group and a recently formed industry/government Common Test Interface (CTI) Working Group. Readers of this document are encouraged to comment on details unclear, contradictory, or undefined to the IEEE 1505 RFI Working Group or the IEEE Standards Association for review and change. These organizations can be contacted at the locations described in the preface of this document. As IEEE Std 1505 evolves, additional revisions may be required and reballoted by the IEEE Standards Association. The RFI Working Group serves to encourage vendors to produce same product class types that are intermatable and interchangeable by adhering to performance specifications of this standard. The document has been developed in accordance with Institute of Electrical and Electronic Engineers (IEEE) Standards Assocation Policies and Procedures per the IEEE SA Standards Board Bylaws [B23],1 the IEEE SA Standards Board Operations Manual [B24], the IEEE SA Standards Companion [B25], and the IEEE Standards Style Manual [B26]. Additional guidance and reference was utilized from The Authoritative Dictionary of IEEE Standard Terms [B15] and SI 10 American National Standard for Use of the International System of Units (SI): The Modern Metric System [B35].