![]() For example, when performing bare-board fabrication testing, the board is not populated and so all pads and vias are 'fair game' when it comes to assigning testpoints. The location of testpoints on a board will depend on factors including the mode of testing (including bare-board fabrication testing, in-circuit assembly testing, etc.) and the method of testing (including automated testing using flying probe and bed-of-nails fixtures, hand testing, etc.). To aid in this process, it is fundamentally beneficial to have a scheme of points on the board - Testpoints - which the testing equipment can probe and perform the required tests. Once fully populated with all its components, a board is often tested again to ensure signal integrity and device operation. After fabrication, the board is typically tested to ensure no short or open circuits. ![]() Testing is an important part of the board manufacturing process.
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