6 Fabrication
6.8 Electrical test

One of the last steps of the PCB fabrication process is to ensure the PCB is free of defects and meet the expected quality standards. Nowadays, there are many automatic testing equipments available for the high volume testing of the PCBs.

PCBs are tested for opens and shorts in the circuitry. The basic of all tests include a computer program which will instruct the electrical test unit to apply a small voltage to each contact point, and verify that a certain voltage appears at the appropriate contact points.