I’m sure there are many ways to detect LEDS at ICT. Many would use these color sensor inside the fixture. The only draw back for this type is the reliability and the costs of sensors themselves, also the fixture must be totally seal dark for the light sensors to work properly. I’ve never used any

Design For Test (DFT)

For any types of testers, it doesn’t matter if it’s functional testers or ICT testers, design for testability is always the key of having great products. It doesn’t matter how good a design is, if it’s not testable to produce quality and high yields product, it’s not a good design. The best products must be