| 摘要 |
PURPOSE:To curtail the circuit examination man-hour and to improve the operation efficiency by predicting a fault detection rate at the time of preparing an inspection data, based on a ratio which the number of pieces of parts belonging to the operation difficult parts kind occupies in a logic circuit printed board. CONSTITUTION:First of all, in a step 1, a predicted fault detection rate is derived, based on a circuit data. In a step 3, whether the predicted fault detection rate derived in the step 1 can satisfy an automatic preparing method or not is decide. When it can satisfy, an inspection data is prepared automatically, based on a circuit data in a step 4, and in a step 5, by executing a fault simulation and verifying the inspection data, a fault detection rate is derived. On the other hand, in case when said rate cannot satisfy, an addition of the inspection data and a fault simulation work by a person's help are repeated until a satisfactory fault detection rate is obtained. Also, when it is decided not to be a satisfactory predicted fault detection rate in the step 3, the inspection data is prepared by a person's help in step 6, the fault simulation is executed in a step 7, and the step 6 the step 7 are repeated until a satisfaction is obtained. |
