HIGH-SPEED MEASUREMENT AND LOGGING APPARATUS,
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OHIO
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A transistorized data logging system consisting of two portable units and the BPU-20 printer is described. The system is able to handle 100 signals in 4 groups whether they are low-level such as from thermocouples, thermo-resistors, or strain gages or high-level signals such as from potentiometric transducers. These signals may be cyclically sampled or a certain group may be repetitively and exclusively sampled. An analog-to-digital converter using digital voltmeter circuits is used for code conversion. Data is displayed on a digital indicator panel or is printed by a 20 position printer having a continuously revolving drum. A 100 3-digit decimal numbers plus sign may be printed in one second. The system quantization error is equal to 0.1 and amplifier error is 0.5. All logic elements used in the system are dc coupled. Provisions are made for storing data on magnetic tape and for direct transmission to data processing complexes including digital computers.
- Computer Hardware
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