Abstract
A digital pulse programmer producing the standard pulse sequences required for pulse nuclear magnetic resonance spectroscopy is described. In addition, a 'saturation burst' sequence, useful in the measurement of long relaxation times in solids, is provided. Both positive and negative 4 V trigger pulses are produced that are fully synchronous with a crystal-controlled time base, and the pulse programmer may be phase-locked with a maximum pulse jitter of 3ns to the oscillator of a coherent pulse spectrometer. Medium speed TTL integrated circuits are used throughout.
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