Reverse Engineering PCB Board Grounding Line

Reverse Engineering PCB board Grounding line noise, is generated from the electrical level difference between grounding track of various parts of systems or by the grounding impedance. Due to the grounding electrical potential difference in the system, appropriate grounding method must be chosen when reverse engineering PCB board to fit it.

In the process of electronic produce reverse engineering, grounding is a very important way to control the interference, the combination of grounding and shield is correct, most of the interference issue could be addressed properly. There are approximately several different grounding methods when reverse engineering printed circuit board rambus includes systematic, housing, digital and analog grounding.

1>     the grounding track should be as wide as possible for reverse engineering printed circuit board probing, the potential will vary according to the variation of current, and cause the unreliability of timing signal in the PCB board, the capability of noise resistance grow weak. So during reverse engineering process, the grounding track should be as wide as possible to the level in which the 3 times allowable current of PCB board can go through, the grounding track should 3mm if possible;

2>     Proper grounding way be chosen: the purpose of single point grounding installation is to prevent the common impedance coupling when the current from different potential system and radio frequency current take the same route back. It is more suitable to use this method in the low frequency PCB board copy which can effectively decrease the impact of distributing transition impedance.

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