PCB Circuit Card Reverse Engineering Work
There is an big misunderstanding among the PCB Circuit Card Reverse Engineering work, especially for those engineers who use traditional EDA tools to proceed the high speed PCB Circuit Card Reverse Engineering and signal integrity issue is quite common in the process. They have ever requested: why the result obtained from the signal integrity tools of EDA tool is not in line with the measurement result obtained from the instrument?
PCB Circuit Card Reverse Engineering work, especially for those engineers who use traditional EDA tools to proceed the high speed PCB Circuit Card Reverse Engineering and signal integrity issue is quite common in the process
There is a simple question with easy answer, that is because the technicians from the EDA manufacturers haven’t explained clearly. Another aspect is the understanding of simulation result from the traditional PCB Card cloning engineers.
As we all know, the most popular EDA tools in the china market is signal integrity analysis tool, signal integrity will analyze the layout and component model acquired from PCB reverse engineering without consideration of power supply distribution. Furthermore, most of the simulator won’t consider it, as a result of that, the consumable result and physical result could have difference.
So in most of the cases, the severity of power supply integrity could be more important than the signal integrity when Reverse Engineering printed circuit board snake shape layout.
Currently, when Reverse Engineering PCB Circuit Card, although some of EDA manufacturers can provide partly the power supply integrity analysis functionality, but due to their analysis functions and signal integrity function has to be separated completely, user has no way to see and test the measurement result.
The power integrity and signal integrity has close relationship. In many cases, the main factor which will affect the power system is the signal transmission. For instance, if the decoupling capacitor hasn’t been layout properly as well as the grounding layer design, track back infection could be great and cause the unevenly current distribution, and lousy noice, etc.
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