The Department of Defense, through the Naval Air Warfare Center Aircraft Division (NAWCAD), is conducting market research to identify potential sources for rack-mounted Analog Discrete Input Measurement instruments as part of the Engine Test Instrumentation Replacement System (ETIRS). The instruments must meet specific performance and environmental requirements, including compliance with military standards for equipment design and operation in shipboard environments. This Request for Information (RFI) is intended to gather vendor capabilities, documentation of past performance, and technical specifications, with responses due by December 16, 2024, at 4 PM EST. Interested vendors should contact Terrence Shearer at terrence.d.shearer.civ@us.navy.mil for further details and to request the performance specification, which is export-controlled.