IEEE Transactions on Instrumentation and Measurement

Issue 2 • June 1974

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Displaying Results 1 - 20 of 20
  • Table of contents

    Publication Year: 1974, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1974, Page(s): c2
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  • A Simple Transistorized Linear Scale Ohmmeter

    Publication Year: 1974, Page(s):113 - 116
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (912 KB)

    The detailed design and the analysis of a simple, accurate, and inexpensive linear scale ohmmeter are presented. The accuracy of measurement by the new ohmmeter is within ±1 percent in the range 10-1-106 Ω, ±2 percent at 10 MΩ, and ±10 percent at 100 MΩ. Unlike most other conventional megohmmeters, this operates with low voltage across the sample and does not... View full abstract»

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  • A Technique for Increasing the Linear Range of a Magnetoresistor Displacement Transducer

    Publication Year: 1974, Page(s):116 - 120
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1023 KB)

    A technique for increasing the linear range of a magnetoresistor displacement transducer by means of shaped pole pieces is developed. The method of determining the required profiles is discussed and observations on the machining of the pole pieces are made. Practical results given in the paper show a sevenfold increase in the linear range. The technique described may have applications in other fie... View full abstract»

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  • Hot and Cold Body Reference Noise Generators from 0 to 40 GHz

    Publication Year: 1974, Page(s):120 - 131
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3492 KB)

    This article describes the design, development, and analysis of exceptionally accurate radiometric noise generators from 0-40 GHz to serve as standard references. Size, weight, power, and reliability are optimized to meet the requirements of NASA air- and space-borne radiometers. The radiometric noise temperature of these noise generators is, unavoidably, calculated from measured values rather tha... View full abstract»

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  • HF and VHF Source Stabilization Technique Incorporating Q-Multiplied Quartz Crystal Resonator

    Publication Year: 1974, Page(s):131 - 140
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1550 KB)

    A new approach is described for the desiga of HF/VHF crystal-controlled frequency sources exhibiting theoretical short-term stability unattainable through the use of conventional quartz oscillator design. The signal generator design uses the concept of AFC stabilization of a conventional quartz oscillator (VCXO) by means of a crystal-controlled highly selective active frequency reference. The AFC ... View full abstract»

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  • Automatic Measurement System for a Multichannel Digitally Tuned Bandpass Filter

    Publication Year: 1974, Page(s):140 - 148
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1475 KB)

    A system is described that automatically and rapidly measures the electrical parameters for each channel in a multichannel digitally tuned bandpass filter. The performance of the filter over its entire tuning range is determined from the individual channel frequency characteristics. Channel frequency characteristics are displayed to summarize the overall performance of the filter and in such a man... View full abstract»

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  • Low-Power Analog-to-Digital Converter and Multiplexer

    Publication Year: 1974, Page(s):149 - 154
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1322 KB)

    A serial analog-to-digital converter is described, with a resolution of 9 b at a word rate of 5 kHz for input voltages of ±0.5 V, at a total power dissipation of approximately 10 mW. A 10-channel multiplexer is included. Although designed originally for application in implantable telemetry systems, this design should prove useful for other low-power data acquisition requirements. View full abstract»

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  • A High-Sensitivity Narrow-Band Time-Domain Reflectometer

    Publication Year: 1974, Page(s):155 - 158
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2258 KB)

    Time-domain reflectometer (TDR) techniques have been used to test transmission line systems for over fifteen years. The technique described in this paper is an extension to present-day techniques and is designed particularly to detect small changes in the reflection coefficient of distributed systems versus time. The instrument uses some of the techniques of narrow-band TDR to provide a waveform, ... View full abstract»

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  • Study of a Special System for Measuring Low-Energy Particle Fluxes

    Publication Year: 1974, Page(s):158 - 162
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2531 KB)

    An electronic system for the control of the output cwrrent of a windowless electron multiplier destined for the measurement of low-energy electron and proton fluxes is described. Having established the equations representing the static operation, in the cases of current and voltage reference sources, the general structural organization in which the studied submodule is integrated is discussed. Jus... View full abstract»

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  • Inductive TDR Measurement of Thickness of Conductive Plating on Wire

    Publication Year: 1974, Page(s):162 - 167
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3543 KB)

    A pulsed eddy current technique is described that is suitable for plating thickness measurements of low-permeability metals such as Au or Ag on high-permeability wire in the 3-80 mg/ in' range. Equipment costs, speed, and accuracy are such as to make this technique a strong contender not only for laboratory measurements but also for production line testing. The method is usable for plating thickne... View full abstract»

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  • A Tracking Polarimeter for Measuring Solar and Ionospheric Faraday Rotation of Signals from Deep Space Probes

    Publication Year: 1974, Page(s):167 - 177
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2240 KB)

    A tracking polarimeter implemented on the 64-m National Aeronautics and Space Administration/Jet Propulsion Laboratories (NASA/JPL) paraboloid antenna at Goldstone, Calif., is described. Its performance is analyzed and compared with measurements. The system was developed to measure Faraday rotation in the solar corona of the telemetry carrier from the Pioneer VI spacecraft as it was occulted by th... View full abstract»

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  • A Microcomputer Programming System

    Publication Year: 1974, Page(s):177 - 178
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (595 KB)

    A programming system is described which provides the software flexibility normally found in minicomputers to microcomputers. With this system, PROM's can be programmed automatically from user written source code. View full abstract»

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  • A Novel Frequency Meter Using Jump Resonance

    Publication Year: 1974, Page(s):178 - 179
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (592 KB)

    A description is given of the principle of operation of a novel frequency meter which makes use of the phenomenon of jump resonance. The prototype instrument gives better than one percent accuracy over the audio and low radio frequency range and accepts inputs with a wide range of waveforms. View full abstract»

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  • Linearized Thermistor Multivibrator Bridges for Temperature Measurement

    Publication Year: 1974, Page(s):179 - 180
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (638 KB)

    Methods for output voltage linearization of a thermistor astable multivibrator bridge (AMB) and a monostable multivibrator bridge (MMB) are given. In addition to higher sensitivity in comparison with Wheatstone bridge, thermistor multivibrator bridges can have direct application in telemetering and digital recording of temperature. The linearity condition of thermistor AMB and MMB are independent ... View full abstract»

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  • Conductive TDR Measurement of Thickness of Conductive Plating on Wires

    Publication Year: 1974, Page(s):181 - 182
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (477 KB)

    A high speed pulse generator is suitably connected to a length of plated wire so that the voltage drop along the wire is a strong function of plating thickness. The method is usable for measuring the thickness of an electrically conductive plating material on wire when the ratio of magnetic permeability to electrical conductivity for the substrate differs substantially from that for the plating. M... View full abstract»

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  • Inductorless All-Pass Phase-Shifters

    Publication Year: 1974, Page(s):182 - 183
    Cited by:  Papers (5)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1231 KB)

    Some new configurations for inductorless phase-shifters are presented. Network realization is done by using a finite gain differential amplifier which permits application over a wide range of frequency. Methods of phase tuning in the discrete and the integrated circuits are reported. View full abstract»

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  • Contributors

    Publication Year: 1974, Page(s):183 - 185
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1974, Page(s): 185a
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  • Institutional listings

    Publication Year: 1974, Page(s): 185b
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Aims & Scope

Papers are sought that address innovative solutions to the development and use of electrical and electronic instruments and equipment to measure, monitor and/or record physical phenomena for the purpose of advancing measurement science, methods, functionality and applications.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief

SHERVIN SHIRMOHAMMADI
School of EECS
University of Ottawa
800 King Edward Ave.
Ottawa, Ontario
K1N 6N5 CANADA
Fax: 613-562-5664
shervin@discover.uottawa.ca