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IEEE Transactions on Instrumentation and Measurement

Issue 3 • Sept. 1967

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1967, Page(s): c1
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1967, Page(s): c2
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  • Table of contents

    Publication Year: 1967, Page(s): 183
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  • A Two-Space Fluid Mapper

    Publication Year: 1967, Page(s):184 - 186
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1501 KB)

    A fluid mapper has been constructed whose boundaries act as though they were infinite in extent. This effect is achieved by using two interconnected flow spaces. An application of the device is illustrated and the accuracy is evaluated by means of a proposed quality factor. View full abstract»

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  • A Universal Potentiometer for the Range from One Nanovolt to Ten Volts

    Publication Year: 1967, Page(s):187 - 191
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2004 KB)

    Recent interest in accurate dc measurements down to nanovolt levels has prompted the development of a wide voltage range potentiometer of a new type with 7 dial resolution and extremely high accuracy. The potentiometer design is almost perfectly "neutral." All switch contacts and resistors of the main potentiometer operate at high voltage levels, and contribute thermal EMFs which are attenuated by... View full abstract»

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  • Thermistor Bead Matching for Temperature Compensated RF Power Thermistor Mounts

    Publication Year: 1967, Page(s):192 - 196
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (725 KB)

    The temperature compensated thermistor-power meter of the dual bridge design has for many years been the most widely used instrument for microwave power measurement. During these many years very little if anything has been written with regard to the manner or criteria for matching the thermistor beads. This paper attempts to fill that void. The procedure to match thermistor beads for less than 2 &... View full abstract»

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  • The Measurement of Effective Resolution of Nonwirewound Potentiometers

    Publication Year: 1967, Page(s):196 - 206
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2728 KB)

    The measurement of the effective resolution of nonwirewound potentiometers has been simplified by the development of test equipment which makes use of the "resolution window" concept, as set forth by Schneider and Silverman. This concept is briefly described again, and a method of mechanization is considered. Analytical and practical experience has shown that the sampling method is the most promis... View full abstract»

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  • A Thin-Film Bolometer Unit

    Publication Year: 1967, Page(s):206 - 211
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2480 KB)

    The bolometer unit widely used for measuring microwave and millimeter wave power becomes more difficult to construct and obtain good performance, as the wavelength gets shorter. To overcome these difficulties, a new unit has been developed which has a very simple structure by virtue of a new matching procedure. The bolometer element is made of a thin metal film evaporated on a thin mica substrate,... View full abstract»

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  • A Laser Microcalorimeter

    Publication Year: 1967, Page(s):212 - 219
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3617 KB)

    A new type of microcalorimeter as the laser power standard in Japan has been developed at the Electrotechnical Laboratory. This is a double calorimeter in which the laser power is measured by a dc substitution method using the thermopile unit, and simultaneous measurement is also made using the Peltier cooling-type calorimeter by dc substitution. The CW power of the gas laser (He-Ne) is controlled... View full abstract»

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  • An Accurate, Semiautomatic Technique of Measuring High Resistances

    Publication Year: 1967, Page(s):220 - 225
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1045 KB)

    An accurate, semiautomatic method of calibrating high-resistance standards is described. Measurements of resistances between 109 and 1014 Ω at a minimum of 1 V or 10-12 A can be made with an accuracy better than 0.1 percent, each determination requiring typically from 0.5 to 50 s. The value of resistance is determined in terms of a fixed three-terminal capacitance, a resistance ratio, and ... View full abstract»

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  • Analysis of Rotationally Misaligned Stators in the Rotary-Vane Attenuator

    Publication Year: 1967, Page(s):225 - 231
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1030 KB)

    Two types of errors are caused by misaligned stators in the rotary-vane attenuator. For each type of error the actual attenuation will differ from the indicated attenuation values throughout most of the usable range of the attenuator. This analysis illustrates that these two types of errors are related to the technique of alignment used in establishing the zero reference of the rotating vane to th... View full abstract»

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  • Calibration of Thermal Transfer Standards of RF Voltage

    Publication Year: 1967, Page(s):232 - 237
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1050 KB)

    A system of RF voltage calibration in the VHF and UHF ranges is described. The primary voltage standard is a calorimetric power meter whose impedance is determined accurately. The working standards are thermal transfer instruments (thermal converters and micropotentiometers). The methods used to calibrate the working standards against the primary standard are described in detail. Then the calibrat... View full abstract»

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  • Study of an Analog Computer System for Reconstruction of Three-Dimensional Figures from Planar Projections

    Publication Year: 1967, Page(s):238 - 241
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1434 KB)

    An electronic analog computer remapper (reconstructing, mapping, and projecting analog computer) is studied, capable of reconstructing figures, graphs, shapes, etc., in three- or higher-dimensional spaces from their two-dimensional projections given in the form of drawings, slides, or photographs. The pattern of the reconstructed figure can then be distorted, remapped according to certain transfor... View full abstract»

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  • Conductivity Measurements in Dissipative Media with Electrically Short Probes

    Publication Year: 1967, Page(s):242 - 246
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (732 KB)

    In a dissipative medium, the radio-frequency input conductance of a linear dipole, whether a bare wire or an insulated wire with its terminals short-circuited to the medium, is simply related to the conductivity of that medium provided the electrical length of the dipole is short. Model measurements were made on dipoles in saline water of known conductivity to test the theory. The feasibility of d... View full abstract»

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  • Microsecond Clock Comparison by Means of TV Synchronizing Pulses

    Publication Year: 1967, Page(s):247 - 254
    Cited by:  Papers (27)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2260 KB)

    A new method for precise clocks comparison is described making use of the short rise time of the synchronizing pulse of a current TV picture signal. It is shown that by measuring simultaneously the time interval between one and the same selected TV frame synchropulse and the pulses derived from the respective clocks, these clocks may be compared with microsecond accuracy even if widely separated, ... View full abstract»

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  • On a Method for Estimating Power Spectra

    Publication Year: 1967, Page(s):255 - 257
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (413 KB)

    In many engineering problems, the power spectra of random signals have to be measured. In this paper, a method for estimating the unknown parameters in the power spectral density functions of discrete random processes is presented. The spectral density functions are represented by a ratio of two real polynomials in z. It is assumed that only a finite record of the random process is observed and no... View full abstract»

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  • The Accuracy of Series and Parallel Connections of Four-Terminal Resistors

    Publication Year: 1967, Page(s):258 - 268
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4093 KB)

    The range and accuracy of resistance calibration can be increased by the use of series and parallel connections of four-terminal resistors. Low value resistors can be permanently connected in series and reconnected in parallel by using Hamon's1 technique to change resistance level without materially affecting resistance accuracy. The resistors are connected in parallel by attaching shorting bars t... View full abstract»

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  • A Technique for Measurement of Impedance through a Lossless Transition

    Publication Year: 1967, Page(s):269 - 276
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2206 KB)

    This paper presents a method for measurement of impedance through a transition from the slotted section transmission line to the load transmission line. The technique uses a lossless tuner as part of the transition and a precision transmission-line section. An example of a practical application of the method is given. View full abstract»

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  • Contributors

    Publication Year: 1967, Page(s):277 - 280
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  • IEEE Instrumentation and Measurement Group

    Publication Year: 1967, Page(s): 280a
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  • Invitation for Contributions

    Publication Year: 1967, Page(s): 280-b
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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

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Editor-in-Chief

SHERVIN SHIRMOHAMMADI
School of EECS
University of Ottawa
800 King Edward Ave.
Ottawa, Ontario
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shervin@discover.uottawa.ca