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Automatic Voltage/Time Acquisition Circuit

IP.com Disclosure Number: IPCOM000042215D
Original Publication Date: 1984-May-01
Included in the Prior Art Database: 2005-Feb-03
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Baudisch, M: AUTHOR

Abstract

This circuit together with a computer and a multiplexer allows the computer to measure, check and display all front end signals of the test system automatically. The circuit requires a repetitive signal and sync pulse for reference, which has a firm relationship to the signal. The circuit mainly consists of logic, which supplies a fast analog detector with a reference voltage and a clock signal which defines at what time the signal is compared with the reference voltage. The reference voltage and the clock pulse can be updated automatically to find a compare with the signal. This circuit allows different modes: 1. Set reference voltage, find time. 2. Set time, find reference voltage. 3. Set reference voltage, set and modify time, store detector output. 4.

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Automatic Voltage/Time Acquisition Circuit

This circuit together with a computer and a multiplexer allows the computer to measure, check and display all front end signals of the test system automatically. The circuit requires a repetitive signal and sync pulse for reference, which has a firm relationship to the signal. The circuit mainly consists of logic, which supplies a fast analog detector with a reference voltage and a clock signal which defines at what time the signal is compared with the reference voltage. The reference voltage and the clock pulse can be updated automatically to find a compare with the signal. This circuit allows different modes: 1. Set reference voltage, find time.
2. Set time, find reference voltage. 3. Set reference voltage, set and modify time, store detector output. 4. Set and modify time, find reference voltage, store reference voltage. The computer (not shown) loads two registers 10 and 11 with a initial value. After a measurement has been taken, the computer reads back the measured value(s) by reading the modified register 10 or 11, or the stored output of 10 in the memory 19 in the case of multiple measurements. After that, the computer reloads wither register 11 or 14, depending on the kind of measurement to be done. All previously described features are possible under strict software control. The register 10 holds the digital reference voltage value. In front of register 10 is an adder/subtractor 13 and a register 14 which holds...