When the angle modulated wave in the signal picked up from the record disc 10 has a normal level, {HEAD ~ the PLL} 19 is locked by {TAIL ~ the angle modulated wave} in a portion of the lock range, the width of which is relatively large 
is locked by
When the angle modulated wave in the signal picked up from the record disc 10 has a normal level , { HEAD ~ the PLL } 19 is locked by { TAIL ~ the angle modulated wave } in a portion of the lock range , the width of which is relatively large
OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH HEAD HEAD HEAD HEAD HEAD HEAD OTH REL REL REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL TAIL OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH