2. Test vectors, fault models and coverage rates

2.1 Vectors and test sequences

Figure 1 schematizes the application principle of testing a circuit, or a block within a circuit; values are applied to the inputs, and the results obtained on the outputs are compared with predetermined values. This corresponds respectively to an input vector V _a (stimuli) and an output vector V _s (reference). A test vector is composed of these two vectors: V = (V _a .V _s ). The V _a vectors are determined to enable the various faults we...