Table 12: Ambiguity from for three-step RC ladder network.

FaultAmbiguity with the following

short short ( = 7–9), short ( = 1), short ( = 3)
openNo ambiguity
short short ( = 7–9)
short short ( = 1), open ( ≥ 21), short ( ≥ 27), open ( ≥ 11), short ( ≥ 26)
open short ( ≥ 21), short ( = 11–13), short ( = 14–24), open ( ≥ 20), short ( ≥ 10)
short short ( = 3), open ( = 11–13), short ( = 4, ), open ( = 5), short ( = 10–17, 23–30)
short short ( ≥ 27), open ( = 14–24), short ( = 4, ), short ( ≥ 15), open ( = 6, 7, 30)
open short ( ≥ 11), open ( ≥ 20), short ( = 5), short ( = 6, 7, 30), short ( ≥ 28)
short short ( ≥ 26), open ( ≥ 10), short ( = 10–17, 23–30), short ( ≥ 15), open ( ≥ 28)