1972 – HP Journal Index

January 1972 v.23 n.5

Cover: A new computerized catheterization lab measurement system

A Computer-aided Hospital Systems for Cardiac Catheterization Procedures. Computer reduction of data acquired during cardiac catheterization eliminates considerable pencil and paper computation, a significant time-saver for the physician. Simultaneously, it guarantees highly sophisticated measurements while shortening a normally lengthy procedure, a less disquieting experience for the patient, by John L. Fanton, pg 2-7. 5690A.

The Cath Lab, pg 3. Cardiac catheterization.

Finding a Good Waveform, pg 6

[Author:] John L. Fanton, pg 7

Clip-and-Read Comparator Finds IC Failures. Here’s a clever new tool for troubleshooting digital integrated-circuit equipment, by Mark Baker, Jesse Pipkin, pg 8-12. 10529A.

Probe, Clip, Comparator – Three Complementary IC Logic Testers, pg 11

[Authors:] Mark Baker, Jesse Pipkin, pg 12

The Well-Modulated Synthesizer. While preserving synthesizer qualities, means are found to modulate output widely, precisely, and remotely, by James E. Stinehelfer, pg 13-16. 8660, 86632A, 86631A.

[Author:] James E. Stinehelfer, pg 16

February 1972 v. 23 n.6

Cover: New HP Automatic Spectrum Analyzer can detail the scene, identify alarm conditions and offer further options

Introducing the Automatic Spectrum Analyzer. Under computer control a modern spectrum analyzer becomes an entirely new instrument, by Michael Cunningham, Lynn Wheelwright, pg 2-6. 8580A.

[Authors:] Lynn M. Wheelwright, Michael Cunningham, pg 6

Organizing the Automatic Spectrum Analyzer System. Organization determines the usefulness of the system’s many capabilities, by William H. Shaffer, pg 7-9. 8580A.

[Author:] William H. Shaffer, pg 9

Automating the 10-MHz-to-18-GHz Receiver. As it is automated, the spectrum analyzer not only acquires computer programmability but also some improvements in basic performance, by Steven Neil Sanders, pg 10-13. 8580A.

[Author:] Steven [Steve] Neil Sanders, pg 13

Hewlett-Packard’s Barney Oliver and John Cage Write the Book. No one or two authorities on instrumentation could alone have produced the new McGraw-Hill text “Electronic Measurements and Instrumentation” which Oliver and Cage have edited, pg 14-16

Fine-line Thermal Recording on Z-fold Paper, by Walter R. McGrath, Arthur Miller, pg 17-20

Position Feedback for Galvanometer Fidelity, pg 18. 7414A, 7754A.

New Recorders Use Hot-tip Writing, pg 20

[Authors:] Walter McGrath, Jr., Arthur Miller, pg 20

March 1972  v.23 n.7

Cover: Microwave Communications Repeater

Time Domain Reflectometry in Narrowband Systems, by Gene A. Ward, pg 2-7. TDR, 1580A.

[Author:] Gene A. Ware, pg 7

Measuring High-value Capacitors. High-capacitance electrolytics have been difficult to measure. New circuit developments make “touch and read” measurements possible, by Yoshihisa Kameoka, pg 8-13. 4350A, 4350B.

[Author:] Yoshihisa Kameoka, pg 12

Measuring True RMS AC Voltages to 100 MHz. Broadband measurements of true rms voltage used to be costly or inaccurate or both, by J. B. Folsom, pg 14-20. 3403A.

[Author:] J. B. Folsom, pg 20

April 1972 v.23 n.8

Cover: HP’s new ECG Telemetry System

An Effective ECG Telemetry System. Replacing direct wiring with an RF telemetry link benefits a monitored cardiac patient by releasing him from the confines of a bed, but it could create some additional problems for the nursing staff. The ECG Telemetry System deftly overcomes these problems, by James L. Larsen, Richard F. Dillman, Alfred Nardizzi, Richard Tverdoch, pg 2-9. 78100A, 78101A.

Why ECG Telemetry? Pg 3

The Importance of Slew-Rate Limiting, pg 6

[Authors:] James L. Larsen, Richard Dillman, Alfred M. Nardizzi, Richard Tverdoch, pg 9

A Human Interface for Automatic Measurement Systems. This system console enhances a user’s ability to operate a measurement system that features a magnetic tape cassette operating system and an interactive graphic display, by Kenneth A. Fox, Marc P. Pasturel, Peter S. Showman, pg 10-17. 8500A.

[Authors:] Kenneth A. Fox, Marc P. Pasturel, Peter S. Showman, pg 17

An Agile Graphic Display Device. The new Graphic Displays have a display area of 11×15 inches, 0.02 inch spot size, 50 ft-L brightness, less than 1 ms large-step jump and settling time – until now no display device could simultaneously meet all these requirements,  by John Riggen, Douglas Fogg, pg 18-24. 1310A, 1311A.

What about Storage Displays? Pg 21

[Authors:] John W. Riggen, O. Douglas Fogg, pg 23

Appendix: Equalizing Power Dissipation in an Electronic Attenuator, pg 23

May 1972 v.23 n.9

Cover: The fast, precise linear-motor actuator and head carriage assembly that moves the read/write heads in Model 7900A Disc Drive

A Faster, Tougher Disc Drive for Small Computer Systems. Here’s a high-performance cartridge disc drive that doesn’t have to be treated like a baby. It’s the only peripheral storage device most small computer systems need, by James E. Herlinger, James R. Barnes, pg 2-5. 7900A.

About Disc Drives, pg 4

[Authors:] James E. Herlinger, James R. Barnes, pg 5

Inside the 7900 Disc Drive. Here’s what makes it fast, accurate, rugged and reliable, by James E. Herlinger, William J. Lloyd, pg 6-11 7900A, 7901A.

[Author:] William J. Lloyd, pg 11

Reading and Writing on the Fast Disc. Specially designed wide-temperature range heads and a phase-locked loop help guarantee reliable data transfer, by William I. Girdner, Wallace H. Overton, pg 12-14. 7900.

[Authors:] William I. Girdner, Wallace H. Overton, pg 14

An Efficient Disc Drive/Computer Interface. The I/O structure minimizes bulk, system cost, and computer overhead, but doesn’t get in the way of drive performance, by Donald J. Bowman, pg 15-16. 7900.

[Author:] Donald J. Bowman, pg 16

Narrowband Noise Immunity in a Broadband Gain-Phase Meter. Phase response, as necessary as gain for complete understanding of circuit behavior, has often been ignored for reasons of convenience. A new Gain-Phase Meter, with its attach-and-read operating simplicity, promises to make phase measurements as routine as voltage measurements. Despite its broad bandwidth (1 Hz to 13 MHz), the new instrument has much of the ability of narrowband phase-meters to suppress the effects of noise, by Raymond C. Hanson, pg 17-20. 3575A.

[Author:] Raymond C. Hanson, pg 20

June 1972 v.23 n.10

Cover: Dr. Dennis R. Clark of the Stanford University Department of Pharmacology with his HP-35 Pocket Calculator

The ‘Powerful Pocketful’: an Electronic Calculator Challenges the Slide Rule. This nine-ounce, battery-powered scientific calculator, small enough to fit in a shirt pocket, has logarithmic, trigonometric, and exponential functions and computes answer to 10 significant digits, by Thomas M. Whitney, France Rode, Chung C. Tung, pg 2-9. HP-35.

Operational Stacks and Reverse Polish Notation, pg 5

How the HP-35 Compares with the Slide Rule, pg 7

[Authors:] France Rode, Thomas [Tom] M. Whitney, Chung C. Tung, pg 9

Algorithms and Accuracy in the HP-35. A lot goes on in that little machine when it’s computing a transcendental function, by David S. Cochran, pg 10-11

[Author:] David [Dave] S. Cochran, pg 11

Packaging the Pocket Calculator. The industrial design of the HP-35 was of primary importance, often taking precedence over electrical considerations, by Edward T. Liljenwall, pg 12-13

[Author:] Edward [Ed] T. Liljenwall, pg 13

New Capabilities in Digital Low-Frequency Spectrum Analysis. A new Fourier analyzer and two fast-transform peripherals adapt to a wide range of applications, by Stephan G. Cline, Norman D. Marschke, pg 14-20. FFT, 5451A, 5470A, 5471A.

See Also: Correction: Regarding a speed-up analyzer in  “New Capabilities in Digital Low-Frequency Spectrum Analysis”, page 23 in the August 1972 issue

The Where and How of Fourier Analyzers, pg 18

[Authors:] Stephan [Steve] G. Cline, Norman [Norm] D. Marschke, pg 20

July 1972 v.23 n.11

Cover: HP’s new Automatic Synthesizer

The Synthesized Test Oscillator – A New Signal Source for the 0.1 Hz-13 MHz Range. Programmability, high accuracy in frequency and level setting, waveform purity – these are some of the capabilities now being asked of wide-range signal sources. Meeting these needs requires something other than a traditional RC oscillator, by Ronald K. Tuttle, pg 2-8. 3320A, 3320B.

[Author:] Ronald K. Tuttle, pg 8

Party-line Programming, pg 8

The Incremental Sweep Generator – Point-by-Point Accuracy with Swept-Frequency Convenience. Putting a calculator in a 0.1 Hz-to-13 MHz Frequency Synthesizer gives the lab bench the speed and convenience of automatic testing. Amplitude sweeping adds a new dimension, by Charles A. Kingsford-Smith, pg 9-15. 3330B, 3330A.

[Author:] Charles Kingsford-Smith, pg 15

Microprogramming and Writable Control Store. Here’s what these powerful but little-understood features of the HP 2100A minicomputer mean to the user, by Fred F. Coury, pg 16-20. 12908A.

[Author:] Fred F. Coury, pg 20

August 1972 v.23 n.12

Cover: The new Model 3490A Digital Multimeter

Compactness and Versatility in a New Plug-Together Digital Multimeter. A new 4 1/2 digit Multimeter is constructed in sections that plug together to form a compact instrument, giving the user a choice of capabilities, by Albert Gookin, pg 2-6. 3470, 34740A, 34702A, 34701A.

[Author:] Albert Gookin, pg 6

A New Five-Digit Multimeter that can test itself. Along with 5-digit resolution, guarded inputs and other attributes of a precision multimeter, this one has an enhanced confidence factor: it can interrogate itself to verify that all goes well, by Lee Thompson, pg 7-12. 3490A.

[Author:] Lee Thompson, pg 12

Functional Modularity Helps Designer and User of New Measurement and Control Subsystem. A method of allocating functions to modules in a system, functional modularity gives a new industrial system-in-a-box a high degree of versatility at reasonable cost, by James M. Kasson, pg 13-19. 2440A. 9600.

Modular Systems for Sensor-Based Data Acquisition and Control, pg 15

Unusual Pacer Excels in System Timing, pg 17

[Author:] James [Jim] M. Kasson, pg 19

Multiprogrammer Magnifies Minicomputer I/O Capacity. When you have an automatic system with dozens or hundreds of devices to control and monitor, and only a minicomputer to do the job, this minicomputer I/O extender can help, by John Mickowski, pg 20-24. 6940A, 6941A.

[Author:] John Mickowski, pg 23

Correction: Regarding a speed-up analyzer in  “New Capabilities in Digital Low-Frequency Spectrum Analysis”, page 14 in the June 1972 issue, pg 23

September 1972 v.24 n.1

Cover: The Logic Pulser and the Microwave Link Analyzer

Logic Pulser and Probe: A New Digital Troubleshooting Team. A new Logic Pulser in a probe package injects pulses onto digital circuit nodes without disconnecting IC outputs. A new Logic Probe detects pulses, high and low levels, and open circuits or bad levels, by Robin Adler, Jan R. Hofland, pg 2-7. 10526T, 10525T.

Two Troubleshooting Kits, pg 6. 5015T, 5011T.

[Authors:] Robin Adler, Jan R. Hofland, pg 7

A New Microwave Link Analyzer with High-Frequency Test Tones. Microwave link nonlinearities yield their secrets to high-frequency test tone probing. Agreement can now be obtained between swept measurements and white noise tests, by Reid Urquhart, pg 8-16. 3702B, 3710A.

Microwave Radio Communications and Performance Measurements, pg 10-11

Appendix: Derivative and Differential Measurements, pg 16

[Author:] Reid Urquhart, pg 16

MLA Measures RF Performance with Down Converter. Using this addition to the HP Microwave Link Analyzer gives new insights into microwave link performance, by Michael Crabtree, pg 17-18. 3730A.

[Author:] Michael Crabtree, pg 18

Communications-Oriented Microwave Solid-State Sweeper. One use is as an up-converter with the HP Microwave Link Analyzer to make RF measurements, by Arlen E. Dethlefsen, pg 19-20. 8605A.

[Author:] Arlen E. Dethlefsen, pg 20

October 1972 v.24 n.2

Cover: The time is coming when a group of test instruments can easily be made to work as one by linking them together digitally through a new interface system.

A Practical Interface System for Electronic Instruments. Connecting instruments into a digitally-controlled system now becomes a matter of plugging in cables. This article describes the interface system that makes this possible, by Gerald E. Nelson, David W. Ricci, pg 2-7

[Authors:] Gerald [Jerry] E. Nelson, David [Dave] W. Ricci, pg 7

A Common Digital Interface for Programmable Instruments: The Evolution of a System. HP’s corporate interface engineer describes the trends, philosophy, and ancestors that have helped define the new HP instrument interface system, by Donald C. Loughry, pg 8-11

[Author:] Donald [Don] C. Loughry, pg 11

Faster Gain-Phase Measurements with New Automatic 50Hz-to-13MHz Network Analyzers. Complete characterization of networks in the frequency domain now becomes faster and more convenient than ever, by Gerald E. Nelson, Paul L. Thomas, Robert L. Atchley, pg 12-20. 3570A.

The Analog Story, pg 14-15

The Digital Story, pg 16

Programming Economy, pg 19

[Authors:] Robert [Bob] L. Atchley, Paul L. Thomas, pg 19


November 1972 v.24 n.3

Cover: HP’s new “voltmeter for the microwave engineer”

A “Voltmeter” for the Microwave Engineer. It makes swept insertion and return loss measurements simultaneously, over a wide frequency range, by Hugo Vifian, Frank K. David, Wayne L. Frederick, pg 2-7. 8755L.

Evolution of Diode Detector, by Frank K. David, pg 4-5

The Well-Matched Modulator, by Wayne Frederick, pg 6

[Authors:] Frank K. David, Wayne L. Frederick, Hugo Vifian, pg 7

Versatile Display Unit Extends Correlator Capability. Together this new Spectrum Display and an HP Correlator form a versatile and economical instrument for analyzing signals and systems in the time and frequency domains simultaneously, by David J. Morrison, Brian W. Finnie, Rajni S. Patel, Kenneth H. Edwards, pg 8-15. 3720A.

Appendix: Effects of Input Quantization, pg 14

[Authors:] David J. Morrison, Brian W. Finnie, Rajni S. Patel, Kenneth [Ken] H. Edwards, pg 15

Voltage Precision and High Current Capability – Both in One Power Supply. This new family of power supplies combine the accuracy of a calibrator with brute force power, by George G. Emmermann, pg 16-20. 6104A, 6114A, 6105A, 6115A.

[Author:] George G. Emmermann, pg 20

December 1972  v.24 n.4

Cover: Models 10, 20 and 30 [9800 Series] are three quite different calculators for a diversity of users with a diversity of calculating capabilities

A New Series of Programmable Calculators. The three calculators and many peripherals of the 9800 Series are designed to handle the broadest possible range of applications. Flexibility and expandability are emphasized, by Richard M. Spangler, pg 2-4.

[Author:] Richard M. Spangler, pg 4

Model 10 Maintains Compatibility, Expands Capability, by Curtis D. Brown, Jack M. Walden, pg 5-7. 9800 Series.

[Authors:] Curtis [Curt] D. Brown, Jack M. Walden, pg 7

Interactive Model 20 Speaks Algebraic Language, by Rex L. James, Francis J. Yockey, pg 8-13. 9800 Series.

Printer and Keyboard for Models 10 and 20, pg 11. 9800 Series.

[Authors:] Rex L. James, Francis [Frank] J. Yockey, pg 13

BASIC-Language Model 30 Can be Calculator, Computer or Terminal, by Richard M. Spangler, pg 14-18. 9800 Series.

9800 Processor Incorporates 8-MHz Microprocessor, by Henry J. Kohoutek, pg 19-22

[Author:] Henry J. Kohoutek, pg 22

All-Semiconductor Memory System Includes Read-Only and Read/Write Chips, by Calvin L. Finn, pg 22-24. 9800 Series.

[Author:] Calvin L. Finn, pg 24

Versatile Input/Output Structure Welcomes Peripheral Variety, by Gary L. Egan, pg 24-27. 9800 Series.

[Author:] Gary L. Egan, pg 27

Development of the 9800 Series, by Robert E. Watson, pg 27-28