A system for generating a pulse train whose constituent pulses occur synchronously with a reference transition of a high-frequency oscillator, which may be easily extended to a system for generating a plurality of such pulse trains, and includes a frequency divider circuit for generating pulses whose frequency is a percentage of the frequency of the oscillator, a delay circuit for delaying the pulse output of the frequency divider circuit, and a gated pulse generator for generating the constituent pulses of the pulse train whenever enabled by the output from the delay circuit and triggered by the reference transition. The timing of the constituent pulses may be further controlled by a second delay circuit at the output of the pulse-generating gate.
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