Upset Testing Methodology for Electronic Systems Which Utilize the MIL-STD-1553B Data Bus

The MIL-STD-1553B "Aircraft Internal Time-Division Command/Response Multiplex Data Bus" is in widespread use in modern digital avionics subsystems. There has been a great increase in interest, in the past few years, in hardening and hardness assurance of digital systems subject to EMP and lightning. Recent efforts have moved from protection from burnout to protection and recovery from upsets. Methods are described for collection of MIL-STD-1553B bus traffic through the utilization of specialized hardware. Additional methods are described for computerized analysis of bus traffic to detect possible upsets. The hardware and software that is presented is currently being utilized in the upset testing of an inertial navigation subsystem.