Table 23: Ambiguity from , , and for four-step RC ladder network.

FaultAmbiguity with the following

shortNo ambiguity
openNo ambiguity
shortNo ambiguity
shortNo ambiguity
open short (), open (), open ()
short short (), short (  & ≥22)
short open (), short, short ()
open open ()
short short (  & ≥22), short ()
shortNo ambiguity
open open ()
shortNo ambiguity