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