How can a test engineer for a circuit board, when there is ample evidence of what is available?
How can a test engineer a circuit when there is plenty of evidence out there for PC cards? Learn protoboard naked) b) bed of nails test 3) a visual inspection and automatic optical inspection 4) In the test circuit 5) functional tests and 6) boundary scan test How do we decide which one to use at a given time or what all should be used OEN time indiscriminately?
Depends on the situation. As for bare boards is better to buy a power test and manufacture the board. The council will the network list used to create the bare printed circuit board and can make a complete and continuous test runs fast enough on the bare stage. After that, he can go home and fill FOB (including the components are installed / soldier of him.) If production levels are high enough to justify time to something like a great program Genrad / bed of nails test station, then it means that Faster check and carry everything on the shelf. If low volume or custom work, then get the board on a bench test and verify each function of the circuit can be the most direct route. If a test power was held at the fab house and spend quality control wafer of entry can not be confident enough in it, install it, turn it on and activate each function to see if all the work (control function). If these tips are returned in a field of RMA, so it probably came from a specific complaint, as such, does not work in this case, you can focus on part of the circuit that could affect the operation he complained. In the test circuits are appropriate when the product is completely mounted and there is a problem that must be tracked. It is also useful for things like cleaning and calibration, etc. These are the final examples … possibilities are so great can not really say .. This test is used only for this … its not that lonely road. I would say that the use of labor is described below has become the most common place that seems ATE (Automated Test nail bed … as Equipment) more useful, but what I see is that kids are actually less qualified and not lose can set a guy in the back with 30 years of experience caring for her. When the last guy's all in the circuit and usually with the test equipment good too. Worse is worse, they call the engineering and an engineer has to abandon what it does is probably already behind and go out and fix it for them. I hope that helps. Good luck.
Chemical Brothers ft Richard Ashcroft – The Test