| 摘要 |
PURPOSE:To constitute a small and inexpensive test apparatus, by preparing a printed circuit board wherein the transmitting and receiving relation of a single direction interface is replaced with respect to a printed circuit board and mounting a test program to said printed circuit board. CONSTITUTION:A printed circuit board 1 to be tested consists of a dual direction interface A part 11, a single directional interface B part 12 and a conversion part 13 for performing interface conversion according to a microprogram. A test printed circuit board 2 having a single directional interface B part 22, wherein transmitting and receiving relation is replaced with respect to the single directional interface B part 12 of the printed circuit board 1 to be tested, is prepared and a test program is mounted on ROM. The printed circuit board 1 to be tested and the test printed circuit board 2 are connected in opposed relationship through both interface parts. By this method, the test of the printed circuit board 1 to be tested can be automatically performed by using an inexpensive and small test apparatus 2. |
