Test Engineering | Electronic Design Test Engineering
Test Engineering is one of the most important tasks in production. In this stage, all electronic boards are tested to verify that the product is free of any error. Testing usually has two stages:
The In-Circuit-Test (ICT)
The In-Circuit-Test (ICT) checks the components and the inter-connections of the parts on a PCB. With the ICT we can detect many problems, such as poor soldering, cold solder or solder bridge, improper component value, broken parts and similar connectivity problems. The result of the ICT is not 100% correct and there is always the chance that something was missed!! For example, a wrong capacitor value may not be detected if it is in parallel with low value resistance! Or, a wrong resistor value may not be detected if it is in parallel with an inductor. Consequently, the engineers at Arshon Technology have a second stage of testing.
The Functional Test
The Functional Test is a complex test that is designed specifically for one particular product and will check the features and functionality of that product. By performing the functional test our engineers reduce the chance of an error to a minimum! Usually, we consider testability in our design right from the first day. This means that we will not need to go back and redesign the board for the final tests. Because of the experience and skills of our engineering staff, we are able to reduce the time spent in the test engineering section, especially with high quantity production. This is critical because each minute of delay in test engineering means a delay in getting the product out of the factory and to the client! As well, we can design test facilities on board, like test pads, connectors and test interfaces. You can discuss your requirements with us before we begin designing and we will incorporate all of them into the final board layout.
Here is a functional tester we developed for a automotive controller: