Saluja, Kewal K.Anderson, Brian D.O.2026-01-022026-01-020018-9219ORCID:/0000-0002-1493-4774/work/174739900https://hdl.handle.net/1885/733803090Fault diagnosis is considered for systems comprising n units u 0,u 1,…, u n-1 in which u i tests u i+1 and u i+2. A necessary and sufficient condition for the diagnosability of t faults in t/2 or t/2 + 1/2 steps is stated, the condition talcing the form of an inequality relating n and t.2en197910.1109/PROC.1979.115620018681756