When an input signal of a low level is outside of the lock range characteristic of the phase locked loop, a voltage controlled oscillator of the phase locked {HEAD ~ loop oscillates} at {TAIL ~ a predetermined frequency} 
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When an input signal of a low level is outside of the lock range characteristic of the phase locked loop , a voltage controlled oscillator of the phase locked { HEAD ~ loop oscillates } at { TAIL ~ a predetermined frequency }
OTH OTH OTH OTH OTH OTH OTH OTH OTH 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 REL TAIL TAIL TAIL TAIL TAIL TAIL TAIL