After we reverse engineering PCB board physical sample and acquire PCB Cloning Gerber File, it is necessary to perform the testing on the PCB prototype which is manufacturing base upon the gerber file acquire through PCB Board cloning technique. at this senarios, the PCB tester will be applied for the circuitry pattern testing to ensure the cloning PCB gerber file has exactly the same as original Printed circuit board;
There are different types of PCB testers, and the functional characteristics of each PCB tester are as follows:
Online tester
The most basic type of test instrument used in electrical testing is the Manufacturing Defect Analyzer (MDA), which is actually a simplified form of the in-circuit tester. It can only simulate short-circuit defects and verify that the resistors have the correct resistance. For MDA measurements, the PCB is placed on the fixture, connected to the MDA via a needle bed, and the entire measurement process is controlled by software and programs.
The In-Circuit Tester (ICT) is much more powerful than the MDA. In addition to all the features of the MDA, ICT is also capable of online testing of digital devices. ICT can detect almost all defects related to the manufacturing process and can accurately find defective components.
Flying probe tester
The flying probe tester is a recent improvement to the online tester. It uses a flying probe instead of a needle bed and uses a number of motor-driven, fast-moving electrical probes to make contact with the pins of the device for electrical measurements.
This instrument was originally designed for PCB bare board testing and requires complex software and programs to support it. It is now possible to effectively perform simulated online testing.
