Accession Number:

AD0265836

Title:

INSTRUMENTATION AND MEASUREMENT TECHNIQUES STUDY

Descriptive Note:

Corporate Author:

IIT RESEARCH INST CHICAGO ILL

Personal Author(s):

• ASHBY,A.T.

Report Date:

1961-07-31

Pagination or Media Count:

1.0

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

Subject Categories:

Distribution Statement:

APPROVED FOR PUBLIC RELEASE