12.6 I/O Connector
An example of improper wiring that causes a ground loop is shown in Fig. 12.13.
C o n n e c t i n g C A M _ G N D a n d
G r o u n d l o o p
I S O _ G N D t h e w r o n g w a y
1 s o l a t o r
I S O _ I N
I S O _ G N D
C A M _ G N D
G r o u n d l o o p
G r o u n d p l a n e v o l t a g e d i f f e r e n c e
Figure 12.13: Improper I/O wiring causing a ground loop
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