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IEEE Transactions on Instrumentation and Measurement

Issue 1 • March 1973

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Displaying Results 1 - 25 of 27
  • [Front cover]

    Publication Year: 1973, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1973, Page(s): c2
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  • Table of contents

    Publication Year: 1973, Page(s): 1
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  • A JFET Circuit for Instrumentation Applications

    Publication Year: 1973, Page(s):2 - 8
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1161 KB)

    A new class of junction field-effect transistor (JFET) circuit is introduced, which can serve as a simple versatile building block in instrumentation applications. Economical realizations of current-to-voltage converters, voltage-controlled voltage sources, and voltage-controlled current sources are described. The basic circuit building block, called the piggy-back pair, consists of a matched pair... View full abstract»

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  • Clock Synchronization Experiments Performed via the ATS-1 and ATS-3 Satellites

    Publication Year: 1973, Page(s):9 - 12
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (845 KB)

    Clock synchronization experiments were carried out May 10 to June 10, 1971, by the NASA/Goddard Space Flight Center and the Smithsonian Astrophysical Observatory via the ATS-1 and ATS-3 geostationary satellites between the NASA tracking stations at Rosman, N. C., and Mojave, Calif., in order to determine the offset and the relative drift rate between the two station clocks. Pulses at C band with v... View full abstract»

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  • An Optically Coupled ECG System

    Publication Year: 1973, Page(s):13 - 17
    Cited by:  Papers (4)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2015 KB)

    Optical telemetry of the ECG from a patient to a power-line operated display can be safely done without the nuisances normally associated with battery-operated equipment. Such instrumentation can also be designed for reliability, convenience and simplicity of use, adherence to current standards (medical and electronic), and ease of repair without compromising performance parameters. Using novel te... View full abstract»

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  • A Pulsed Hall Device Gaussmeter

    Publication Year: 1973, Page(s):18 - 22
    Cited by:  Papers (1)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (814 KB)

    A crucial measurement in the Astron device of the controlled thermonuclear research program is to monitor a small (10-G) transient magnetic field caused by a moving group of electrons. The Astron device involves high currents, large magnetic fields, radiation problems, and gigantic radio frequency (RF) noise. The evolution of a Hall device gaussmeter to directly measure this phenomenon is explaine... View full abstract»

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  • Statistical Analysis and Computer Simulation of Laser Doppler Velocimeter Systems

    Publication Year: 1973, Page(s):23 - 34
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2573 KB)

    In a laser Doppler velocimeter the signal arises from the superposition of several pulses at random phase, and the instantaneous frequency recorded at the output, which is a measure of the velocity, contains an ambiguity component due to this effect. A statistical analysis is presented that predicts the ambiguity for both the mask and the Gaussian beam velocimeters and the results are shown to be ... View full abstract»

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  • A frequency synthesizer for 10/2π kHz

    Publication Year: 1973, Page(s):34 - 37
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    A sinusoidal voltage source of frequency nominally 10/2π kHz (w = 104 rad/s) is derived from a 5-MHz standard. Digital counters are used to generate the required frequency, which differs from 10/2π kHz by less than 2 parts in 10... View full abstract»

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  • Relaxation Time Measurements by an Electronic Method

    Publication Year: 1973, Page(s):38 - 41
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2212 KB)

    In many experiments, one is faced with the problem of measuring the time constant of decaying signals. The paper describes a simple electronic system that permits the direct measurement of time constants. The system was used in connection with relaxation experiments on hydrogen and rubidium masers and was found to operate well. The use of a computing counter in the systems gives the possibility of... View full abstract»

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  • Modified Infinite Sample Method for Routine Permittivity Measurements at Microwave Frequencies

    Publication Year: 1973, Page(s):41 - 46
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1101 KB)

    A modified infinite sample method for routine permittivity measurements of granular or powder as well as liquid materials is described. The method permits continuous monitoring of the temperature, moisture content, and density of the test sample. Analytical and graphical solutions, which lead to the material permittivity from experimental data and measurement uncertainty, are presented. The method... View full abstract»

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  • Improved Data Collection for an X-Ray Diffractometer

    Publication Year: 1973, Page(s):47 - 52
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1797 KB)

    A system is described whereby a single-circle powder diffractometer is controlled by means of a punched paper tape program. An ASR33 teletype machine is used for both the input and output of data, the output being in a form directly suitable for further computer analysis. It is shown that by developing a hardware control system specifically for this task considerable increase in efficiency can be ... View full abstract»

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  • Transfer Function Measurement Using Analog Modeling Techniques

    Publication Year: 1973, Page(s):52 - 61
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3701 KB)

    Analog models provide a cheap and effective method for identification and checkout of a wide range of physical systems via the transfer function concept. This paper reviews the excitation of series, parallel, and pi mode analog models by deterministic stimuli. Errors between the system and model responses may be displayed on a cathode-ray tube, or on an instrument measuring mean-error modulus. Nov... View full abstract»

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  • A Frequency-Lock Method for the Measurement of Q Factors of Reflection and Transmission Resonators

    Publication Year: 1973, Page(s):61 - 77
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4920 KB)

    A new method for the measurement of Q factors of reflection (single-ended) and transmission (double-ended) resonators has been developed. The basis of the technique is the locking of an oscillator to some point away from the center of the resonator response curve. This is accomplished by the introduction of a phase offset into a conventional oscillator-resonator stabilization circuit so as to make... View full abstract»

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  • Center of Mass Measurement Using an Array System

    Publication Year: 1973, Page(s):78 - 83
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (789 KB)

    A method is described for measuring the center of mass of uniform object-images using a two-dimensional array system. Measurement error in the center of mass is computed for various images projected in different positions with respect to the array matrix. The effects of two types of two-dimensional image perturbation on measurement accuracy are analyzed. View full abstract»

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  • Long-Term Accuracy of Time Comparisons via TV Signal along Radio Relay Links

    Publication Year: 1973, Page(s):84 - 87
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (795 KB)

    A time comparison method, which is based on TV synchronization pulses sent along radio links, was proposed and successfully tested in Czechoslovakia in 1967. Experiments performed afterwards in Europe and the U. S. confirmed the significance of this method. The instability of the overall propagation time delay along the radio links (including the equipment) is the major source of errors for long-t... View full abstract»

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  • On the Measurement of Tooth-Ripple Losses in Laminated Poles

    Publication Year: 1973, Page(s):88 - 92
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1083 KB)

    This paper presents the results of an experimental investigation into the problem of tooth-ripple losses in the laminated poles of rotating machines. The losses are measured by measuring the Poynting vector in the air-gap region of the machine between the surface of the poles and the slotted armature. Specially designed probes are used to measure the electric and magnetic fields and the signals fr... View full abstract»

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  • Automatic Hold-Off Adjustment to Avoid False Triggering of Oscilloscope Time Bases

    Publication Year: 1973, Page(s):92 - 94
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2154 KB)

    A system is described that avoids false synchronization of the trigger on signals arriving while the hold-off circuit is resetting, thus preventing the apparent shifting of displayed waveforms. The effectiveness of the system is illustrated by results obtained with different oscilloscopes and signals. View full abstract»

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  • Dielectric Measurements of Sheet Materials

    Publication Year: 1973, Page(s):94 - 95
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1149 KB)

    A simple method of determining the dielectric constant of sheet materials is described. For lossless and low-loss materials, the dielectric constant may be evaluated by a simple measurement of the guide wavelength in the presence of the dielectric. Since the latter measurement can be made accurately using simple standard equipment, the method gives good results. For medium or high-loss materials, ... View full abstract»

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  • Design of an Audio Logic Tester

    Publication Year: 1973, Page(s):95 - 97
    Cited by:  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (575 KB)

    The design of a simple logic tester producing audio outputs is described. These audio outputs are distinct frequencies, approximately an octave apart, and correspond to the logic states '0,' '1,' and 'fault,' as defined for transistor-transistor logic (TTL) integrated circuits. The tester can be easily modified to detect pulses or logic levels of other types of circuits. It is expected that such a... View full abstract»

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  • Dependency of Error of Reflection Coefficient Measurement on VSWR Magnitude

    Publication Year: 1973, Page(s): 98
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  • Lord Kelvin on Atoms as Fundamental Natural Standards (for Base Units)

    Publication Year: 1973, Page(s): 99
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  • Comments on "A Hazard-Free Walsh-Function Generator"

    Publication Year: 1973, Page(s):99 - 100
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  • Comments on "A Differential Transformer with Temperature- and Excitation-Independent Output"

    Publication Year: 1973, Page(s): 100
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  • Contributors

    Publication Year: 1973, Page(s):101 - 104
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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.

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Meet Our Editors

Editor-in-Chief
Prof. Alessandro Ferrero
Dipartimento di Elettrotecnica
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Politecnico di Milano
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Phone: 39-02-2399-3751
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