Observation points for Fault grading

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rmk423

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Hi,

Why is it that adding an input port as an observation point doesn't contribute to the fault coverage while outputs & inouts add up to the coverage?

Thanks,
RMK
 

Inputs are observable by definition. I think that is your answer, but I am confused by what you actually mean.
 

Actually, I would like to understand, what observation nodes can we strobe in Digital Fault grading & how to choose them, what are the things to be considered to choose a node as an observation point?
 

rmk423 said:
Actually, I would like to understand, what observation nodes can we strobe in Digital Fault grading & how to choose them, what are the things to be considered to choose a node as an observation point?
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are you familiar with the concepts of fault controllability and fault observability? I would start from there.
 

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