During the E-Test, a net list is generated on the basis of the PCB data provided by the customer. This net list displays all connection routes from parts and connection points.
After the circuit boards have been manufactured, electric voltage is applied to the connections given in the net list, through testing probes. Therefore not all pads need to have a testing mark.
Through the E-Test, short circuits or open conductor traces can be identified and localized, guaranteeing the functionality of the circuit boards.
At Multi-CB all PCBs ≥ 2 layers are tested by E-test.
The testing with E-test may not assure the perfect accuracy of the goods, for technical reasons. The customer should perform an incoming goods inspection.