To be exact, {TAIL ~ the abnormal state detection circuit} 23 outputs {HEAD ~ a high level} until the next pulse a5 and the next pulse e3 agree with each other so as to produce a pulse g3 
To be exact , { TAIL ~ the abnormal state detection circuit } 23 outputs { HEAD ~ a high level } until the next pulse a5 and the next pulse e3 agree with each other so as to produce a pulse g3
OTH OTH OTH OTH TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH