Instrumentation and Measurement Techniques Study
Author(s): A. T. Ashby Corporate Author: Armour Research Foundation Corporate Report Number: ARF 5112-Q14 Date of Publication: 1962-07-31 Pages: 44 Contract: DA 36-039-st-78269 AD Number: AD0287414 Original AD Number: AD-287 414Contrails does not possess a copy of this report. Click here to offer Contrails a donation of this report
Abstract: The location of faults on open wire transmission lines utilizing the pulse-echo technique is discussed. A storage type oscilloscope and correlation method are descrbed. A method of tesing for transistor leakage current while the device is still incorporated in a circuit was developed. Several techniques for in-circuit testing are suggested. The equipment is capable of measuring in-circuit leakage of one microampere for circuit impedances down to 10 ohms. The breadboard circuitry used to generate wideband quadrature audio signals using Hall elements is described. Quarature signals were observed over the range of 350 to 3500 cycles.