When {HEAD ~ the pulse voltage} is supplied to the electrodes 40, 42 of the transducer elements 36 through {TAIL ~ the printed circuit} 48 and ground electrodes 46, the piezoelectric element 38 of each transducer element 36 is actuated to issue an ultrasonic wave 
is supplied through
When { HEAD ~ the pulse voltage } is supplied to the electrodes 40 , 42 of the transducer elements 36 through { TAIL ~ the printed circuit } 48 and ground electrodes 46 , the piezoelectric element 38 of each transducer element 36 is actuated to issue an ultrasonic wave
OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD REL REL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH