January 1966 v.17 n.5
Cover: Measuring Multi-Layer Liquid Depths with TDR
A New High-stability AC Voltmeter with a 10-MHz Frequency Range and 1% Accuracy. A new ac voltmeter with wide frequency coverage and enhanced accuracy is the first of its type to achieve a ground-referenced dc output, by Reid J. Gardner, pg 2-7. 400E.
Measurement of Liquid Layer Thickness with Time Domain Reflectometry, by James Brockmeier, pg 8. 140A, 1415A.
See Also: Correction: For Fig. 3 in the article “Measurement of Liquid Layer Thickness with Time Domain Reflectometry”, page 10 in the February 1966 issue
Design Leaders: Lionel Kay Danielson, Reid Gardner, pg 7
Stratospheric Warning, pg 8
February 1966 v.17 n.6
A New TV Waveform Oscilloscope for Precision Measurements of Video Test Signals. For testing TV transmission systems to meet the standards required for color TV, a special wideband oscilloscope has been designed, by Ralph R. Reiser, Richard E. Monnier, pg 2-6. 191A.
Continuous TV Monitoring with Vertical-Interval Test Signals. A brief description of the signals transmitted in TV channels for continuously checking channel quality, by Richard E. Monnier, Ralph R. Reiser, pg 7-10
Oscilloscope Design Leaders: Ralph R. Reiser, Richard E. Monnier, pg 10
Correction: For figure 3 in the article “Measurement of Liquid Layer Thickness with Time Domain Reflectometry”, page 7 in the January 1966 issue, pg 10
The ‘VITS’ Program for Intercity Television Network Testing, by S. C. Jenkins, pg 11-12. American Telephone and Telegraph Company.
[Author:] S. C. Jenkins, pg 12
March 1966 v.17 n.7
Cover: Low-Frequency RFI Measurements
A Sensitive, Wide Range DC Null Voltmeter with an Internal Bucking Supply for Zero Loading Error. A floating, high-sensitivity DC Null Meter measures voltages to below 1 microvolt and achieves virtually infinite input impedance with a bucking supply, by Charles D. Platz, pg 2-6. 419A.
Design Leader: Charles D. Platz, pg 5
A Portable DC Voltage Standard Providing 10 PPM Transfer Accuracy. A new type of instrument transfers precision dc voltages out of the standards laboratory to working areas, by Robert E. Watson, pg 7-10. 735A.
[Author:] Robert E. Watson, pg 9
RFI Measurements Down to 10 kHz with Spectrum Analyzer Converter, by John Cardoza, pg 12. 851B, 8551B.
See Also: Correction: In the article “RFI Measurements Down to 10 kHz with Spectrum Analyzer Converter”, the mixer input ports in Fig. 4 are incorrectly labeled, page 4 in the May 1966 issue
[Author:] John Cardoza, pg 11
April 1966 v.17 n.8
Cover: 1.5 x 10-8 Accuracy DC Voltage Divider Using New -hp- Standard Resistors
A New Distortion Analyzer with Automatic Nulling and Broadened Measurement Capability. A new audio-RF distortion analyzer has been designed which, when roughly pre-tuned, tracks the signal to be measured and automatically nulls the fundamental frequency allowing for a more consistent measurement and also over a wider frequency range, by Charles R. Moore, pg 2-7. 334A, 331A, 332A, 333A.
Design Leaders: Charles R. Moore, Terry E. Tuttle, Larry A. Whatley, pg 5
An Adjustable Standard Resistor with Improved Accuracy and High Stability. A new standard resistor designed in the -hp- Standards Laboratory can be set to within +-.015 ppm of nominal, substantially facilitating precision calibration work, by E. Paul Hubbs, pg 8-14. 11100.
Stability of Capacitively-Loaded Emitter Followers – a Simplified Approach. The following analysis shows that simple adjustment in bias current will often stabilize the circuit, by Glen B. DeBella, pg 16
[Authors:] Paul Hubbs, Henry T. Hetzel, pg 14; Glenn B. DeBella, pg 15
May 1966 v.17 n.9
Cover: Measurements made with a single new wide-range instrument: The Vector Voltmeter
The RF Vector Voltmeter – An Important New Instrument for Amplitude and Phase Measurements from 1 MHz to 1000 MHz. A broadband two-channel millivoltmeter and phasemeter simplifies many measurements heretofore often neglected, by Fritz K. Weinert, pg 2-9. 8405A.
Design Leaders: Roderick Carlson, Fritz K. Weinert, pg 9
Selected Vector Voltmeter Measurements, pg 10-12
A Portable Battery-Powered Multi-Function Meter with Lab-Quality Performance. A fully-portable laboratory instrument is useful from 1 hertz to 4 megahertz at levels to below 1 millivolt, by James M. Colwell, pg 13-16. 427A.
Design Leaders: James M. Colwell, Noel M. Pace, pg 14
Correction: In the article “RFI Measurements Down to 10 kHz with Spectrum Analyzer Converter”, page 12 in the March 1966, the mixer input ports in Fig. 4 are incorrectly labeled, pg 4
June 1966 v.17 n.10
An Advanced New DC-25 MHz Oscilloscope for Programmed Production Testing. A new oscilloscope has the special capability of maintaining its dc baseline without drift which leads to higher dc accuracy and the important characteristic of being programmable, by John Strathman, pg 2-7. 155A.
Design Leaders: Charles House, Norman Overacker, John Strathman, Roy Wheeler, pg 7
Time Domain Reflectometry in 75-OHM Systems, by Charles A. Donaldson, pg 9
[Author:] Charles R. Donaldson, pg 9
Rise Time Converters for Simpler TDR Testing of Band-Limited Systems, by Lee R. Moffitt, pg 10-11. 10452A, 10456A.
Design Leader: Lee R. Moffitt, pg 11
A Calibrated Susceptance for TDR Measurements of Small Reactive Discontinuities, by Richard W. Anderson, pg 12-13. 874A.
Design Leader: Richard W. Anderson, pg 13
A DC-Stabilized Oscilloscope Plug-In with 50-mV/CM Sensitivity. Freedom from dc drift overcomes one of the most troublesome effects in making oscilloscope measurements of transducer output and other small signals, by James R. Pettit, pg 16. 1407A.
Design Leaders: Jim Pettit, Tom Schroath, pg 14
July 1966 v.17 n.11
A Sensitive new 1-GHz Sampling Voltmeter with Unusual Capabilities. A voltmeter operating on the principle of incoherent sampling measures over wide frequency and voltage ranges while providing an output usable for signal analysis, by Fred W. Wenninger, Jr., pg 2-8. 3406A.
Design Leaders: John T. Boatwright, Ronald K. Tuttle, Fred W. Wenninger, Jr., Roger L. Williams, pg 7
Coherent and Incoherent Sampling, pg 4
Measuring Attenuation, SWR, and Substitution Loss with a Low-Noise, High-Precision SWR Meter. Effects of noise and other factors are presented for an improved SWR Meter used with crystal and bolometer type detectors, by Bradford G. Woolley, pg 9-13. 415E.
[Author:] Bradford G. Woolley, pg 12
Increasing Instrument Sensitivity with a Low-Noise Preamplifier. A guide to a number of applications in which measurements are simplified by a low-noise wide-band amplifier, by Robert B. Bump, pg 14-16. 465A.
[Author:] Robert B. Bump, pg 15
August 1966 v.17 n.12
A New DC-50+ MHz Transistorized Oscilloscope of Basic Instrumentation Character. A small-size portable oscilloscope with negligible trace drift and using plug-ins has been designed as the keystone of a complete oscilloscope system, by Floyd G. Siegel, pg 2-11. 180A, 1801A, 1820A, 1821A.
Short, Large Screen, High-Frequency CRT, pg 4
Compact, Wideband, Stripline Delay Line, pg 7
Electronically-controlled Oscilloscope Camera, pg 10
Design Leaders: William L. Green, Floyd G. Siegel, James D. Williams, pg 11
World-wide Time Synchronization, 1966. Time scales maintained at the world’s time-keeping center have been correlated with new levels of precision in the latest around-the-world flying clock experiment, by LaThare N. Bodily, Ronald C. Hyatt, Dexter Hartke, pg 13-20. Flying clock, 5060A.
First Cesium-beam Resonator, pg 17
[Authors:] LaThare N. Bodily, Dexter Hartke, Ronald C. Hyatt, pg 19
The Benchmark, pg 20. Flying Clock, 5060A.
September 1966 v.18 n.1
A New Universal Impedance Bridge with Simplified, Semi-Automatic Tuning. By using feedback to adjust one bridge element automatically, a bridge requiring only one balancing control is achieved, by Katsumi Yoshimoto, pg 2-5. 4260A.
Design Leaders: Haruo Itoh, Kimijiro Kikuchi, Hitoshi Noguchi, Kazu Suzuki, Katsumi Yoshimoto, pg 5
A System for Automatic Control of the ‘DQ’ Resistor in an Impedance Bridge, by Hitoshi Noguchi, Haruo Itoh, Katsumi Yoshimoto, pg 6-9. 4260A.
Appendix: AC Bridge Loci, by Hitoshi Noguchi, pg 10
A Plug-in Unit for Extending Counter-Type Frequency Measurements to 12.4 GHz, by John N. Dukes, pg 11-13. 5255A.
[Author:] John N. Dukes, pg 12
New FCC Rules for FM Stereo Frequency Control, pg 14
A Frequency Comb Generator with a Range from 1 MHz to Beyond 5 GHz, by Roderick Carlson, pg 15-20. 8406A.
Design Leaders: Roderick Carlson, Harley Halverson, pg 19
Accurate Determination of a Signal Frequency on a Spectrum Analyzer, pg 17
October 1966 v.18 n.2
Cover: Cutaway view of major new 12 GHz Sampling Device
An Ultra-Wideband Oscilloscope Based on an Advanced Sampling Device. The state of the oscilloscope art has taken a significant forward step with the development of a new oscilloscope that operates from DC to 12.4 GHz and displays signals as small as 1millivolt, by Darwin L. Howard, Allan I. Best, James M. Umphrey, pg 2-7. 1425A, 140A, 141A, 1410A 1411A, 1430A, 1431A, 1432A, 1424A, 1425A, 1104A, 1106A, 1105A.
Design Leaders: Allan I. Best, Darwin L. Howard, James M. Umphrey, pg 7
Ultra-fast Triggering and Ultra-Resolution TDR, pg 9-10
Second Symposium on Test Instrumentation, pg 11
New NBS Laboratories, pg 11
A DC to 12.4 GHz Feedthrough Sampler for Oscilloscopes and Other RF Systems. An important circuit development in the form of an ultra-wideband sampling device is leading to major new capabilities in electronic instrumentation, by Wayne M. Grove, pg 12-15
[Author:] Wayne M. Grove, pg 15
A Summary of Some Performance Characteristics of a Large Sample of Cesium-Beam Frequency Standards, by LaThare N. Bodily, pg 16-19. Flying clock, 5060A.
[Author:] LaThare N. Bodily, pg 19
Operation of the Portable Cesium-beam Frequency Standard, pg 19-20
Frequency Standards in the Omega Navigation System, pg 20
November 1966 v.18 n.3
Cover: A Precision DC Differential Voltmeter and Ratiometer
A Simplified DC Differential Voltmeter and Ratiometer for High-Precision Measurements. An easy-to-use dc differential voltmeter measures dc voltages from 1microvolt to 1100 volts with a resolution of 0.2 microvolt and with high accuracy. This instrument is also a precision ratiometer for comparing two dc voltages, by Lawrence J. Lopp, Jr., pg 2-7. 3420A, 3420B.
Using the DC Differential Voltmeter/ratiometer to Construct a 100:1 Precision Divider, pg 6
Design Leaders: Larry L. Carlson, Lawrence J. Lopp, Jr., Robert E. Watson, pg 7
ADAC – An Automatic System for Measuring Hall Effect in Semiconductors. One of the barriers to detailed materials analysis has been the large effort involved in data acquisition and reduction. This has been greatly reduced in the -hp- laboratories by a system called ADAC. New information on the electronic transport properties of InAs has been one of the first benefits of the system, by Egon Loebner, T. J. Diesel, Cristy M. Schade, pg 9-14. Automatic Data Acquisition Contoller.
Analysis of Solids with more than one type of Carrier, pg 11
Typical ADAC Data Reduction Procedure, pg 13
Design Leaders: T. J. Diesel, Egon E. Loebner, Cristy M. Schade, pg 14
A Study of Indium Arsenide using ADAC Equipment, pg 15-16
December 1966 v.18 n.4
Cover: Tape Recorder Heads being aligned under microscope
A new High-Performance 1.5 MHz Tape Recorder. A new instrumentation-quality tape recorder has been designed around a current-rather than voltage-sensing input amplifier. Decreased noise and wider bandwidth are direct benefits of this approach, by Gerald L. Ainsworth, pg 2-7. 3950 Series.
[Author:] Gerald L. Ainsworth, pg 6
Magnetic Tape Recording and Reproducing, pg 4
Square Wave Response of The HP Model 3950 Magnetic Tape Recording System, pg 6
A Current Preamplifier for Magnetic Tape Playback Systems, by Arndt B. Bergh, pg 8-9
[Author:] Arndt B. Bergh, pg 9
Wideband Cavity-type Coaxial Frequency Meters. A discussion of the construction used to achieve the broad frequency range of the -hp- microwave cavity wavemeter, by Anthony S. Badger, Stephen F. Adam, pg 10-12. 536A, 537A.
[Author:] Anthony S. Badger, pg 12
Simplified Technique for Evaluating Diode RF Performance, by Bernard Levine, pg 13
[Author:] Bernard Levine, pg 13
Swept-Frequency SWR Measurements in Coaxial Systems. An important new swept-frequency technique permits quick and accurate measurements of SWR in coaxial systems up to 18 GHz, by Stephen J. Adam, pg 14-20
[Author:] Stephen F. Adam, pg 19
Standard Broadcast Frequency Offset for 1967, pg 19