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How To Gurantee Our Quality
Jun 09, 2018

     The functional test after assembly of the circuit board is generally called FVT (Function Verification Test) or FCT (Function Test). Its purpose is to catch poorly assembled boards and to install them through a simulation circuit board. Full-time testing of the complete machine, in order to grasp the circuit assembly board that may be flawed before assembling into the whole machine, so as not to be assembled into the whole machine, only to discover the bad, but also to remove the reorganization time waste.

     The appearance of the functional tester may change with the size and shape of the product. In addition, the functional test method may also have different options depending on the urgency of the time, the number of test boards, and the cost. Our company is mainly a flying probe test and test stand. Flying probe testing is the latest solution to some of the major problems in current electrical testing. It replaces the needle bed with a probe, uses multiple motor-driven, rapidly moving electrical probes to make contact with the pins of the device and make electrical measurements. The emergence of flying probe testing has changed the test methods of low-volume and quick-turn assembly products, greatly shortening the product design cycle and time to market. The flying probe tester can check for short circuits, open circuits, and component values. A camera was also used on the flying probe test to help locate lost components. Use the camera to check the direction of a well-defined component shape, such as a polar capacitor. With probe positioning accuracy and repeatability in the 5-15 micron range, the flying probe tester can accurately detect the UUT. The flying probe test solves a large number of existing problems seen in PCB assembly, such as the lack of a golden standard board at the time of development. Problems also include test development cycles that can be as long as 4-6 weeks; fixture development costs of about $10,000-$50,000; not being able to test low-volume production economically; and not being able to quickly test a prototype assembly. These conditions indicate that traditional needle bed testers lack low-cost systems for testing low yields; lack of rapid test coverage for prototype assembly; and the inability to test shielded assemblies.

     The fixture test  is a special test fixture for conducting on-off testing of mass-produced PCBs. In order to detect whether the circuit board has a short-circuit phenomenon or not, the vias are blocked. Guarantee board quality. The test is better. Another advantage of the test rack is that if you open the test rack, the number of returned boards will be more than that. There will be no cost test for the follow-up and flying probe testing will be different.

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