source:News release time:2023-07-27 Hits: Popular:PCB Assembly company
On the surface, component density seems not to be a problem for functional testing, after all, the main consideration here is "giving an input to obtain the correct output". Admittedly, it's a bit simplistic, but in reality, that's the case. Applying a given excitation signal to the input end of the UUT, after a certain period of time, the UUT will output a specific series of data, and connecting to the I/O connector should be the only access issue.
But component density also has a certain impact. Looking at the PCB sample in Figure 1 (or your own design), you need to answer the following questions first;
Do I need to connect a calibration circuit?
Is it important to diagnose specific components or areas of UUT?
If there is a positive opinion on the answer to the above question, is the exploration done by humans or by some kind of automatic mechanical device?
Do you want to use the Test automation device?
Is the I/O connector used easy to access or connect? If not, is the connector a through-hole mounting component that can be contacted through a needle bed?
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