MEL Systems and Services Ltd. Offers Printed Circuit Board - PCB In-circuit and Functional Tester. MEL Systems and Services Ltd. Is an ISO 9001:2008 certified company. The Printed Circuit Board - PCB In-circuit and Functional Tester can now be directly interfaced to the PC using the parallel port, hence freedom from obsolescence of PC interfaces and hardware. This tester can directly support testing of the Device Packages from old generation DIP packages to the new generation SOIC, PLCC, GFP Packages, having high pin counts up to 160 Pins. The Printed Circuit Board - PCB In-circuit and Functional Tester uses the powerful and field proven VI Test Methods like MVI, SVI, WVI and G VI to learn the signatures from a known good board and compare the same with the faulty board. This method of testing assists the user to test their boards without the need to rig up an expensive board specific test jig or without writing tedious test programs.