PLL frequency control system by using the compare phase (Phase) of the output frequency with a phase of the way the frequency ออ้าง (Reference Frequency) that is input to the input side of the system.
PLL frequency control system By comparing the phase (Phase) of the output frequency of the phase of the reference frequency (Reference Frequency) which is fed into the input system.
PLL a frequency control by using phase comparison method (Phase) frequency of the take output with phase ของความถี่ reference (Reference.) Frequency), which was entered into the input of system.