Accession Number : AD0265836

Title :   INSTRUMENTATION AND MEASUREMENT TECHNIQUES STUDY

Corporate Author : IIT RESEARCH INST CHICAGO ILL

Personal Author(s) : ASHBY,A.T.

Report Date : 31 JUL 1961

Pagination or Media Count : 1

Abstract : Work was continued in several areas of investigation intended to advance the state of the art of electrical measurements. A square wave technique for isolating faulty components in conventionally-wired or printed circuitry without the need of unsoldering was implemented and is described. A modified sawtooth signal shows promise of isolating faulty semiconductor devices in-the-circuit. A survey of recording and readout techniques other than the normally employed magnetic devices is presented. This discussion outlines the problem areas in thermoplastic recording Kerr magneto-optic and electron beam readout devices. Techniques for locating faults in long-line spiral-four systems are discussed. Two correlation techniques are discussed, and a breadboard impedance-phase angle measuring device is described. An investigation of the properties of spiral-four cable is also described. (Author)

Descriptors :   *CIRCUITS, *RECORDING SYSTEMS, *TELEPHONE LINES, *TEST SETS, CORRELATION TECHNIQUES, ELECTRICAL IMPEDANCE, ELECTRON BEAMS, ELECTROSTATICS, FIELD WIRE COMMUNICATIONS, HEAT RESISTANT PLASTICS, INSTRUMENTATION, MAGNETIC RECORDING SYSTEMS, MEASUREMENT, MILITARY EQUIPMENT, MODULATION, PHASE DISTORTION, PRINTED CIRCUITS, SEMICONDUCTORS, SIDEBANDS, TEST EQUIPMENT, TEST METHODS

Distribution Statement : APPROVED FOR PUBLIC RELEASE