J.F. Taylor provides key technical design and integration support across the spectrum of flight Test Assets and Instrumentation. Since 1985, we have maintained resident expertise in designing and developing on-board instrumentation for precise time stamping of test events and post-mission reconstruction of event sequences across multiple aircraft platforms. The test data that we collect is critical for understanding system performance. We have developed standard and fighter-ruggedized Discrete Bus Formatter (DBF) systems for IFF events that record MIL-STD-1553 bus, ARINC bus, and GPS position data during flight test events. J.F. Taylor has designed, fabricated, and maintained the DBF II with hardware and software upgrades.