NMR spectrometer incorporating a re-entrant FIFO

Details NMR spectrometer incorporating a re-entrant FIFO NMR spectrometer incorporating a re-entrant FIFO

1984-03-12

1985-06-25

Tokar, Michael J.

Electricity: measuring and testing

Particle precession resonance

Using a nuclear resonance spectrometer system

324307, 364900, G01R 3308

Patent

active

045256730

ABSTRACT:
Cyclic instrument control and data acquisition functions which are critically dependent upon synchrony are directed from a computer based system including a FIFO buffer adapted to feedback the most recently active word from its output register and re-store said word at a corresponding sequential position in the FIFO queue. To accommodate complex and interleaved control and data acquisition cycles, each FIFO word has a state portion for commanding external devices, a persistence portion for specifying the duration of selected state active in the FIFO output buffer for a desired persistence interval, and a repetition portion for specifying the number of consecutive discrete repetitions of the currently active state-persistence datum at the output of the FIFO. Termination of the cyclic sequence is accomplished at the expiration of a preselected number of complete cycles. The FIFO input address is selected automatically in accord with the number of words comprising a single complete sequence of instrument control/data acquisition functions.

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patent: 4481608 (1984-11-01), Berkowitz

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