Reference clock
Encyclopedia
A reference clock may refer to the following:
  • A master clock
    Master clock
    A master clock is a precision clock that provides timing signals to synchronize slave clocks as part of a clock network. The master clock in such installations is controlled by an accurate quartz crystal oscillator, usually referenced to an external frequency standard such as MSF, which is part of...

     used as a timekeeping standard to regulate or compare the accuracy of other clocks
  • In electronics and computing, the clock signal
    Clock signal
    In electronics and especially synchronous digital circuits, a clock signal is a particular type of signal that oscillates between a high and a low state and is utilized like a metronome to coordinate actions of circuits...

    used to synchronise and schedule operations
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