One of the mysteries of the English language finally explained.
Fix the frequency of (an oscillator or a laser) relative to a stable oscillator of lower frequency by a method that utilizes a correction signal derived from the phase difference generated by any shift in the frequency.
- ‘The frequency synthesizer has a double phase-locked loop with a high-frequency portion and an intermediate-frequency portion, each with one divider and one counter in a feedback branch.’
- ‘At higher frequencies, unit responses from the BCSS appear to remain phase-locked even though failing to respond to every cycle of oscillation.’
- ‘By integrating this source with a delay line and a broadband, grazing-incidence toroidal mirror, the researchers generated odd phase-locked harmonics of the laser frequency up to very high orders.’
- ‘In this image, 114-s light pulses were used at a repetition frequency of 160 Hz. Pulses were phase-locked to the sinusoidal voltage command driving the loudspeaker that delivered the sound stimulation.’
- ‘They carry a single video channel and two audio channels, with channel selection by an I2C phase-locked loop programmable synthesiser.’
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