Fault coverage of a test vector 1. We apply to the circuit of Exercise 13.2 the input vector (a b c

d) =

(l 00 1). Find by structural analysis all the faults covered by this vector.

2. Is the preceding vector a good test vector? Analyze the structure of the circuit in order to find test vectors having the highest test coverage (best number of detected faults).

Exercise..13.5. Diagnosis of a circuit Let us consider again the circuit of the previous exercise.

1. Look for a simple test sequence that at best distinguishes the three faults in the group {2°, 5°, 11 1 }.-

2. Draw the diagnosis tree of the following test sequence;

TS = <1000, 1001,0110>.

3. Is this sequence significant?