NASA NTRS · 19760000577
Recording-tape position sensor
Abstract
Device uses tachometer pulses from capstan and reset pulse from one reel to sense count of tach pulses per revolution of reel. Number of pulses is direct measurement of tape stack radius and is independent of tape speed or direction.
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Schoppet, G. C.. 1977-03-01. Recording-tape position sensor. https://ntrs.nasa.gov/citations/19760000577
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