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Computer Security Resource Center

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Disciplined Oscillator (DO)

Definition(s):

  An oscillator whose output frequency is continuously adjusted (often through the use of a phase locked loop) to agree with an external reference. For example, a GPS disciplined oscillator (GPSDO) usually consists of a quartz or rubidium oscillator whose output frequency is continuously adjusted to agree with signals broadcast by the GPS satellites.
Source(s):
NISTIR 8323