January 1982 v.33 n.1

Cover: 1345A Graphics Display Module

Signal Processing Using Surface Acoustic Waves. If electrical signals are converted into minute acoustic waves on the surface of a piezoelectric crystal, the signals can be processed in novel ways for various electronic applications. Such devices are small, rugged, and can be fabricated using microelectronic techniques, by William R. Shreve, pg 3-8. SAW.

Radio Data Link, by W. R. Shreve, pg 7

[Author:] William [Bill] R. Shreve, pg 8

Retrofitting for Signature Analysis Simplified. This microprocessor exerciser provides preprogrammed external stimulus routines and monitoring circuits for signature analysis troubleshooting of microprocessor-based systems, by Robert Rhodes-Burke, pg 9-16. 5001A.

Signature Analysis Reviewed, pg 10

The First Hewlett-Packard Journal Reader Opinion Survey, 4 pages, between pg 14 & pg 15

[Author:] Robert [Bob] Rhodes-Burke, pg 16

A Family of Microprocessor Exercisers, by David Rick, Robert Welsh, Waymond Fong, pg 17-19. 5001 Series.

A Fast, Compact High-Quality Digital Display for Instrumentation Applications. Small size, low cost, and a simple digital interface make it easier for designers to build this directed-beam CRT display into their electronic instruments, by William R. Mason, Kunio Hasebe, Thomas J. Zamborelli, pg 20-28. 1345A.

Instrumentation Graphics, pg 24

[Authors:] Thomas [Tom] J. Zamborelli, Junio Hasebe, William [bill] R. Mason, pg 27

February 1982 v.33 n.2

Cover: Model 8350A microwave Sweep Oscillator

A Broadband, Fully Programmable Microwave Sweep Oscillator. Nearly thirty RF and microwave plug-in modules are available to tailor this high-performance swept signal source to a wide range of applications in the frequency range from 10 MHz to 26.5 GHz, by Rolf Dalichow, Douglas E. Fullmer, pg 3-10. 8350A.

A System-Oriented Instrument, pg 7.

8350A Self-Test Capabilities, by Bill McDonald, pg 10

[Authors:] Douglass [Doug] E. Fullmer, Rolf Dalichow, pg 10

A New Series of Programmable Sweep Oscillator Plug-ins. One plug-in sweeps from 10 MHz to 26.5 GHz and there are many others, by Duaine C. Wood, Gary W. Holmlund, Glenn E. Elmore, pg 11-21. 83500 Series.

A Switched YIG-Tuned Multiplier Covering 0.01 to 26.5 GHz, by Lynn Rhymes, pg 15

A Frequency Doubler with High Output Power from 18 to 26.5 GHz, by Val Peterson, Jerry Orr, pg 17-18

A Broadband 2-to-7-GHz Power Amplifier, by Michio Furukawa, pg 20

[Authors:] Duaine C. Wood, Gary W. Holmlund, Glenn E. Elmore, pg 21

Portable Defibrillator-Monitor for Cardiac Resuscitation. This new portable defibrillator monitors the patient, measures its effectiveness in delivering a high-voltage pulse to the patient, and provides a permanent record of the resuscitation procedure, by Victor C. Jones, Paul I. Bennett, pg 22-28. 78660A.

[Authors:] Victor [Vic] C. Jones, Paul I. Bennett, pg 28

March 1982 v.33 n.3

Cover: Hewlett Packard’s largest computer, the HP 3000 Series 64

High-Performance Computing with Dual ALU Architecture and ECL Logic. This largest and fastest HP 3000 Computer System can handle all of the data processing needs of many companies, by Frederic C. Amerson, Mark S. Linsky, Elio A. Toschi, pg 3-12. Series 64.

Dual ALU Micromachine Has Powerful Development Tools. A single line of microcode controls two parallel processing units, by Richard D. Murillo, pg 5-6. HP 3000 Series 64.

[Author:] Richard [Rick] D. Murillo, pg 6

[Authors:] Frederic [Rick] C. Amerson, Elio A. Toschi, Mark S. Linsky, pg 10

Powerful Diagnostic Philosophy Reduces Downtime. A customer’s computer can be fully diagnosed without making any trips to the site, by Richard F. DeGabriele, David J. Ashkenas, pg 11-14. Series 64.

[Authors:] Richard [Rick] F. DeGabriele, David J. Ashkenas, pg 14

A High-Performance Memory System with Growth Capability. High-speed control store, cache memory and I/O buffers provide quick CPU access to needed data, by Malcolm E. Woodward, Ken M. Hodor, pg 15-17. HP 3000 Series 64.

[Authors:] Ken M. Hodor, Malcolm [Woody] E. Woodward, pg 17

An Input/Output System for a 1-MIPS Computer. I/O adapters match multiple I/O buses to the high-speed central system bus, by W. Gordon Matheson, J. Marcus Stewart, pg 18-21. HP 3000 Series 64.

[Authors:] J. Marcus [Marc] Stewart, W. Gordon Matheson, pg 21

The Advanced Terminal Processor: A New Terminal I/O Controller for the HP 3000. It’s designed to handle up to 256 terminals generating 4000 characters/second with peaks to 20,000, by James E. Beetem, pg 22-25. HP 3000 Series 64

[Author:] James [Jim] E. Beetem, pg 25

GUEST – a Signature Analysis Based Test System for ECL Logic. It runs at real-time clock rates and generates test vectors algorithmically, by James L. Robertson, Edward R. Holland, pg 26-29. HP 3000 Series 64.

Designing for Testability with GUEST. The HP 3000 Series 64 and its tester were designed together, by Karen L. Meinert, pg 28

[Author:] Karen L. Meinert, pg 28

[Authors:] James [Jim] L. Robertson, Edward [Ed] R. Holland, pg 29

Packaging the HP 3000 Series 64. The goal was a cost-effective package that maximizes reliability and serviceability, by Bennie E. Helmso, Manmohan Kohli, pg 30-32

[Authors:] Manmohan [Manny] Kohli, Bennie [Ben] E. Helmso, pg 32

April 1982 v.33 n.4

Cover: Model 3724A/25A/26A Baseband Analyzer

An Integrated Test Set for Microwave Radio Link Baseband Analysis. This instrument combines six traditional test instruments into one package for easy baseband measurements from 50 Hz to 18.6 MHz. An internal microprocessor simplifies test setup, improves accuracy, and enables the instrument to check itself, by Richard J. Roberts, pg 3-7. 3724A/25A/26A.

White-Noise Testing of FDM Communication Links, pg 6

[Authors:] Richard J. Roberts, pg 7

Design of a Precision Receiver for an Integrated Test Set. Different baseband measurements require different and often conflicting receiver characteristics. This design can be reconfigured by a microprocessor to resolve such conflicts, by J. Guy Douglas, David Stockton, pg 8-17. 3724A/25A/26A.

System Software Package for the Baseband Analyzer, pg 17

[Authors:] David Stockton, J. Guy Douglas, pg 17

Control and Display System for a Baseband Analyzer. This system relieves the operator of the task of setting up various instruments for baseband analysis and displays results in both alphanumeric and trace formats, by Brian W. Woodroffe, Lawrence Lowe, pg 18-22. 3724A/25A/26A.

Checking 458,752 Bits of Program Memory, pg 20

[Authors:] Brian W. Woodroffe, Lawrence Lowe, pg 20

Microprocessor Contributions for Baseband Analyzer Accuracy and Speed of Measurement, pg 21. 3724A/25A/26A.

A Combined Tracking and White-Noise Generator. Accurate sine-wave and white-noise stimuli are required for analyzing baseband signals and this generator provides both, by John R. Pottinger, Stephen A. Biddle, pg 22-25. 3724A/25A/26A.

[Authors:] John R. Pottinger, Stephen A. Biddle, pg 25

Wideband, Fast-Writing Oscilloscope Solves Difficult Measurement Problems. A new expansion storage cathode ray tube and a wideband amplifier design extend the writing rate frontier to 2000 cm/ms, by James F. Haley, Danny J. Oldfield, pg 26-32. 1727A.

Variable Persistence, pg 29

[Authors:] James [Jim] F. Haley, Danny [Dan] J. Oldfield, pg 32

May 1982 v.33 n.5

Cover: Model 9386A Desktop Computer

Advanced Multilingual Computer Systems for Measurement Automation and Computer-Aided Engineering Applications. Developing and running a test, measurement and control, or computer-aided engineering system is much easier if you have the right tool. These computer systems are designed specifically for such use, by David W. Palermo, John L. Bidwell, pg 3-7. 9826A, 9836A.

9826A versus 9836A, by Steve Chorak, Jon Rubinstein, pg 4

[Authors:] John L. Bidwell, David W. Palermo, pg 6

Hardware Design for an Integrated Instrumentation Computer System. This desktop computer design is centered around a fast 16-bit microprocessor and integrated CRT display and flexible disc storage units, by James W. McLucas, Don D. Stewart, Robert J. Horning, Ronald G. Rogers, Ken L. Burgess, pg 7-17. 9826A, 9836A.

Product Design for Easy Production, by Dave Brown, Pat Balliew, John Armour, pg 10-11

Instrument Burn-In, by Ken Fedraw, pg 15-16

[Authors:] Ronald [Ron] G. Rogers, Ken L. Burgess, pg 16

[Authors:] Robert [Rob] J. Horning, James [Jim] W. McLucas, Don D. Stewart, pg 17

I/O Philosophy and Architecture for Instrumentation Control. A nonstructured approach provides a new series of I/O cards that have improved performance at a lower cost, by Loyd F. Nelson, pg 17-21. 9826A, 9836A.

[Author:] Loyd F. Nelson, pg 21

Low-Cost Printers for the 9826A and 9836A Computers. This family of compatibly packaged thermal printers provides quality hard copy of alphanumeric text and graphics displays, by Michael J. Sproviero, pg 22-24. 2670 Series, 2673A.

[Author:] Michael [Mike] J. Sproviero, pg 23

The 9826A/9836A Language Systems. BASIC, HPL, and a powerful version of Pascal can all be used by a single 9826A or 9836A Computer System, by Kathryn Y. Kwinn, Roger E. Ison, Robert M. Hallissy, pg 24-32

BCD Arithmetic on the 68000, by Andy Goris, pg 29

[Authors:] Kathryn [Kathy] Y. Kwinn, Robert [Bob] M. Hallissy, Roger E. Ison, pg 32

Data Communications for the 9826A and 9836A Computer Systems. The serial data communications interface handles many asynchronous protocols and drives a variety of RS-232-C peripherals, by Robert P. Uhlrich, Carl M. Dierschow, pg 33-36

Protocols, pg 34

Electrical Standards, pg 35

[Authors:] Carl M. Dierschow, Robert [Bob] P. Uhlrich, pg 35

June 1982 v.33. n.6

Cover: Model 2680 Laser Printing System

Laser Printing System Provides Flexible, High-Quality, Cost-Effective Computer Output. Used with the HP 3000 family of distributed data processing systems, this combination of powerful, interactive software and innovative, state-of-the-art hardware produces excellent print quality on notebook-size paper at 45 pages per minute, by James A. Hall, pg 3-8. 2680A.

Six Steps to a Printed Page. Here are the details of the electrophotographic process used in HP’s laser printing system, by Robert R. Hay, pg 6-7. 2680A.

[Author:] Robert [Bob] R. Hay, pg 7

[Author:] James [Jim] A. Hall, pg 8

Laser Printing System Architecture. It’s based on the concept of a cell printer that can be of arbitrary rectangular size and contain any dot pattern, by James T. Langley, pg 8-10. 2680A.

[Author:] James [Jim] T. Langley, pg 10

Interactive Software for Intelligent Printers. Two high-level software packages for the HP 3000 help the user design and format laser printer output, by Kathleen A. Fitzgerald, pg 10-16. 2680A.

[Author:] Kathleen [Kathy] A. Fitzgerald, pg 16

Electrostatic Image Formation in a Laser Printer. The laser beam causes a pattern of charged and uncharged areas to be formed on the surface of a cylindrical drum, by Erwin H. Schwiebert, Paul R. Spencer, pg 16-20

[Authors:] Paul Spencer, Erwin H. Schwiebert, pg 19

Laser Printer Image Development System. In this discharged-area development system, electrostatic forces drive black toner into the drum areas exposed to the laser beam, by Thomas Camis, pg 20-24. 2680A.

[Author:] Thomas [Tom] Camis, pg 23

Laser Printer Fusing System. After being transferred from the drum to the paper, the toner is made permanent by a novel heating method, by Roger D. Archibald, pg 24-26. 2680.

[Author:] Roger D. Archibald, pg 26

Monitoring the Laser Printing Process. Here’s how the laser printer checks itself to maintain print quality for hundreds of thousands of pages, by Ronald A. Juve, David K. Donald, pg 26-30. 2680A.

[Authors:] David [Dave] K. Donald, Ronald [Ron] A. Juve, pg 30

Specialized High-Speed Electronics for Document Preparation Flexibility. This sophisticated controller harnesses the laser printing technology so its potential can be made easily available to the user, by Philip Gordon, pg 30-35. 2680A.

[Author:] Philip [Phil] Gordon, pg 35

The People Who Made the Product. The 2680 program manager gives credit where it’s due, by Billie J. Robison, pg 36

July 1982 v.33 n.7

Cover: The disassembled cavity and tuning mechanism in front of the 8684B Signal Generator

Optical System Design for the Laser Printing System. Here are the details of the optical system of the 2680 Laser Printing System described in these pages last month, by John R. Lewis, Laurence M. Hubby, J., pg 3-10. 2680A.

Laser Printer Optics Control and Diagnostic Circuit. This system drives the laser-beam modulator and checks the optics module, by Gary L. Holland, pg 5

A Synchronous Mirror-Motor Drive for the Laser Printer. The scanning mirror sweeps the laser beam across the page and this circuit keeps it turning at constant speed, by Gary L. Holland, pg 8-9

[Author:] Gary L. Holland, pg 9

[Authors:] Laurence [Larry] M. Hubby, Jr., John R. Lewis, pg 10

Laser Printer Machine Control System. One of two electronic subsystems within the 2680A Laser Page Printer, the MCS monitors and controls the printing process. Its companion subsystem, the data control system or DCS, was described last month, by James D. Crumly, Von L. Hansen, pg 11-15. 2680A.

Sensing Paper Jams. If the paper drive motor is going too fast or too slowly, the paper may have jammed or torn, by Gary L. Holland, pg 13. 2680A.

[Authors:] Von L. Hansen, James [Jim] D. Crumly, pg 15

Solid-State Microwave Signal Generators for Today’s Exacting Requirements. These manually tuned instruments match the extraordinary spectral purity of widely used HP klystron generators and beat them in modulation capability and accuracy, by Donald R. Chambers, Steven N. Sanders, pg 16-20. 8683A, 8684B.

Automatic Testing of Manually Tuned Signal Generators, by James Thalmann, pg 17

[Authors:] Donald [Don] R. Chambers, Steven [Steve] N. Sanders, pg 19

High-Performance Wideband Cavity-Tuned Solid-State Oscillators. These novel designs use a pair of oscillator circuits coupled into a single high-accuracy tunable cavity, by Ronald F. Stiglich, Edward G. Cristal, Phillip G. Foster, Arthur N. Woo, pg 20-25. 8683A/B, 8684A/B.

dc-Coupled FM for Microwave Signal Generator, by James Thalmann, pg 24

[Authors:] Ronald [Ron] F. Stiglich, Phillip [Phil] G. Foster, Arthur N. Woo, Edward [Bud] G. Cristal, pg 25

A Wide-Dynamic-Range Pulse Leveling Scheme. This design provides leveled output power over a range of 145 dB for both CW signals and pulses as narrow as 100 nonseconds, by James F. Catlin, pg 26-32. 8683A/B, 8684A/B.

An Accurate RF Power Reference Oscillator, by James Catlin, pg 28-29

Microwave Solid-State Amplifiers and Modulators for Broadband Signal Generators. Bsic hybrid microcircuit designs are customized for each of four signal generator models, by Kim Potter Kihlstrom, pg 30-32. 8683A/B, 8684A/B.

[Authors:] Kim Potter Kihlstrom, James [Jim] F. Catlin, pg 32

August 1982 v.33 n.8

Cover: A solarized version of a figure [on page 8] of the edge profile of trilayer process using spin-on glass

Viewpoints: IC Process Technology: VLSI and Beyond. Te demand for ever-smaller device dimensions requires continual advances in IC fabrication techniques and this is where we stand today, by John L. Moll, Frederic N. Schwettmann, pg 3-4

[Authors:] Frederic [Fred] N. Schwettmann, John L. Moll, pg 4

Optical IC Lithography Using Trilayer Resist. Acomposite photoresist layer reduces exposure effects that degrade pattern definition and reduce resolution in optical IC lithography, by E. David Liu, Gary W. Ray, Michael M. O’Toole, pg 5-9. IC Fabrication.

[Authors:] Gary W. Ray, E. David Liu, Michael [Mike] M. O’Toole, pg 9

Silicon Integrated Circuits Using Beam-Recrystallized Polysilicon. Melting a polysilicon layer by using an intense laser or electron beam can significantly improve the properties of the layer for semiconductor device fabrication. Novel vertical device structures can also be formed with this technique, by Theodore I. Kamins, pg 10-13. IC fabrication.

[Author:] Theodore [Ted] I. Kamins, pg 13

X-Ray Lithography. The shorter wavelengths of soft X-ray radiation make the definition of even smaller dimensions for VLSI circuits possible, by Garrett A. Garrettson, Armand P. Neukermans, pg 14-18

[Authors:] Armand P. Neukermans, Garrett A. Garrettson, pg 17

Dry Etching: An Overview. Plasma etching technology has several advantages for IC processing compared to wet-chemical etching methods. Anisotropic etching and automatic endpoint detection are two of the advantages, by Paul J. Marcoux, pg 19-23. IC Fabrication.

An Automated Plasma Reactor, by Susan Okada, pg 22

[Author:] Paul J. Marcoux, pg 23

Thin Films Formed by Plasma-Enhanced Chemical Vapor Deposition. Electrically exciting the gases used in a chemical vapor deposition process can reduce the sensitivity to temperature variations and allow deposition at lower temperatures. Some films produced by this technique are discussed, by Dragan B. Ilic, pg 24-27. IC fabrication.

Determining Thin-Film Stress, pg 25

Thin Gate Dielectric Films for VLSI MOS ICs: Thermal Silicon Oxynitride, by Tom Ekstedt, Hugh Grinolds, pg 26

[Author:] Dragan B. Ilic, pg 27

Electromigration: An Overview. The lifetime of the very thin and narrow conductors used in VLSI circuits is largely determined by the operating current density and metallic composition is discussed, by Paul P. Merchant, pg 28-31

[Author:] Paul P. Merchant, pg 30

SWAMI: A Zero-Encroachment Local Oxidation Process. Lateral oxidation limits density in oxide-isolated VLSI circuits. This process removes this limit by using a novel sequence of conventional processing techniques, by Kuang Yi Chiu, pg 31-32

[Author:] Kuang Yi Chiu, pg 32

Trench Isolation Technology, by Shang-yi Chiang, pg 33

High-Pressure Oxidation. Oxidation of silicon at atmosphere pressure requires considerable time and high temperatures that can be detrimental to the results of previous process steps. Increasing the oxidant gas pressure allows reduction of time and/or temperature for a desired oxide thickness, by William A. Brown, pg 34-36. IC fabrication.

[Author:] William [Bill] A. Brown, pg 36

September 1982 v.33 n.9

Cover: 1980B Oscilloscope talking to an HP 9826A Computer in a lab bench test

Oscilloscope Measurement System is Programmable and Autoranging. This new concept in oscilloscopes is a significant aid to measurement productivity, by William B. Risley, pg 3-4. 1980A/B.

[Author:] William [Bill] Risley, pg 4.

Designing the Oscilloscope Measurement System. The microprocessor brings the new dimension of programmability to the oscilloscope, by William E. Watry, Monte R. Campbell, Russell J. Harding, John R. Wilson, Wilhelm Taylor, pg 5-13. 1980A/B.

Custom Microcircuits Make the 1980A/B Possible, by William Duffy, John Meredith, Mike McTigue, pg 7

Allowing for system Expansion, by William Watry, pg 9

[Authors:] Wilhelm [Will] Taylor, John R. Wilson, William [Bill] E. Watry, Russell [Russ] J. Harding, Monte R. Campbell, pg 13

The Early History of the 1980A/B Oscilloscope Measurement System, by Zvonko Fazarinc, pg 14

The Design and Development of the 1980A/B at Colorado Springs, by William B. Risley, pg 14

Digital Waveform Storage for the Oscilloscope Measurement System. With this option, the oscilloscope measurement system can digitize, store, and transmit waveform data and receive waveform data from a computer to display, by Robert M. Landgraf, Eddie A. Evel, pg 15-20. 1980A/B.

[Authors:] Robert [Bob] M. Landgraf, Eddie [Ed] A. Evel, pg 20

Putting the Measurement System on the Bus. The oscilloscope is a latecomer to the world of interface-bus-compatible instruments, by Michael J. Karin, pg 21-24. 1980A/B.

[Author:] Michael [Mike] J. Karin, pg 24

Mechanical Design of the Oscilloscope Measurement System. Except for one printed circuit board, the same parts go into the two possible configurations, by John W. Campbell, pg 24-26. 1980A/B.

[Author:] John W. Campbell, pg 26

A High-Performance Bipolar Integrated Circuit Process. Ion-implanted collector, base, and emitter regions in an oxide-isolated structure result in compact high-performance bipolar transistors with reduced power consumption for use in high-density integrated circuits, by Irene V. Pecenco, Albert S. Wang, pg 27-29. IC fabrication.

[Authors:] Albert [Al] S. Wang, Irene V. Pecenco, pg 29

Synthesizer Accuracy for Unsynthesized Microwave Sources. This source synchronizer stabilizes microwave sources to provide accurate continuous-wave or swept-frequency outputs. It also provides a high-performance microwave counter, by V. Alan Barber, pg 30-36. 5344S.

[Author:] Vernon Alan [Al] Barber, pg 36

October 1982 v.33 n.10

Cover: 4145A Semiconductor Parameter Analyzer

Intelligent Instrument Streamlines dc Semiconductor Parameter Measurements. Used as a stand-alone instrument or as part of an automated test system, this smart curve tracer makes it easy to measure, analyze, graphically display, and store dc semiconductor parameters, by Fumiro Tsuruda, Kohichi Maeda, Teruo Takeda, Jin-ichi Ikemoto, pg 3-15. 4145A.

Typical Application of the 4145A Semiconductor Parameter Analyzer, pg 6-7

Extending the 4145A’s Output Range for Power Transistor Measurements, by Michitaka Obara, pg 10-11

[Authors:] Jin-ichi Ikemoto, Fumiro Tsuruda, pg 14

[Authors:] Kohichi Maeda, Teruo Takeda, pg 15

Programmable Stimulus/Measurement Units Simplify Device Test Setups. Each SMU can be electronically set to supply a specified voltage or current and to measure the associated current or voltage, by Susumu Takagi, Hiroshi Sakayori, Teruo Takeda, pg 15-20. 4145A.

[Authors:] Hiroshi Sakayori, Susumu Takagi, pg 20

HQMOS: A High-Performance NMOS Technology. Innovative processing methods are used to fabricate a scaled-down version of a standard n-channel MOS process, resulting in lower power consumption and higher speed, by Roger To-Hoi Szeto, Devereaux C. Chen, Horng-Sen Fu, Anders T. Dejenfelt, pg 21-27

[Authors:] Roger To-Hoi Szeto, Devereaux [Dev] C. Chen, Anders T. Dejenfelt, Horng-Sen Fu, pg 27

MOS Device and Process Design Using Computer Simulations. By using carefully developed computer models, IC device performance can be accurately simulated and the effects of process changes predicted, saving time and expense in new product design and development, by Soo-Young Oh, pg 28-32

[Author:] Soo-Young Oh, pg 32

November 1982 v.33 n.11

Cover: 5180A Waveform Recorder and the digitizer hybrid circuit

Waveform Recording with a High-Dynamic-Performance Instrument. This new waveform recorder digitizes and stores single-shot or repetitive signals. Its ten-bit, 20 MHz analog-to-digital converter delivers exceptional performance that is fully specified and characterized under realistic operating conditions, by Mark S. Allen, James L. Sorden, pg 3-9. 5180A.

Waveform Recording with the 5180A, pg 6-7

[Authors:] James [Jim] L. Sorden, Mark S. Allen, pg 9

Designing a Ten-Bit, Twenty-Megasample-per-second Analog-to-Digital Converter System. Custom hybrid and integrated circuits accurately sample and digitize a signal in forty nanoseconds, by Robert C. Rehner, Jr., Arthur S. Muto, Bruce E. Peetz, pg 9-20. 5180A.

Custom IC Processes, pg 15

A 40-MHz Input Amplifier, by Pat Deane, pg 18-19

[Authors:] Arthur [Art] S. Muto, Robert [Bob] C. Rehner, Jr., Bruce E. Peetz, pg 20

Measuring Waveform Recorder Performance. Realistic dynamic tests are the key to user confidence in the quality of the recorded waveshape, by J. Martin Neil, Bruce E. Peetz, Arthur S. Muto, pg 21-29. 5180A.

See Also: Correction: Figure 13 on page 26 in the article “Measuring Waveform Recorder Performance” has some incorrect labels, page 15 in the December 1982 issue

[Author:] J. Martin [Marty] Neil, pg 29

Time Base Requirements for a Waveform Recorder. Time base instability causes the time between samples to vary. Amplitude errors are the result, by Steven C. Bird, Jack A. Folchi, pg 29-34. 5180A.

[Authors:] Steven [Steve] C. Bird, Jack A. Folchi, pg 34

Display and Mass Storage for Waveform Recording. This waveform recorder companion provides functions needed in many applications, by Michael C. Detro, Christina M. Szeto, pg 34-36. 5181A.

[Authors:] Michael [Mike] C. Detro, Christina [Chris] M. Szeto, pg 36

December 1982 v.33 n.12

Cover: HP-86 Personal computer and the 7470A Plotter

Extended Memory and Modularity Are Added to the Series 80 Computer Family. HP’s newest Series 80 computers, the HP-86 and HP-87XM, provide memory capacities up to 640K bytes, different combinations of built-in interfaces, and for the HP-86, a modular system configuration, by Andrew W. Davidson, William R. Frolik, John T. Eaton, pg 3-7

[Authors:] John T. Eaton, William [Bill] R. Frolik, Andrew [Andy] W. Davidson, pg 7

Module Brings CP/M to HP’s Latest Series 80 Computers. This small computer system plugs into the HP-86 and HP-87XM Computers to allow them to use the wide variety of CP/M-compatible software available to the personal computer user, by Timothy V. Harper, pg 8-11. 82900A.

[Author:] Timothy [Tim] V. Harper, pg 11

Development of a Low-Cost, High-Quality Graphics Plotter. A novel plotting technology and a design for low manufacturing cost have resulted in an inexpensive X-Y plotter capable of fast, high-resolution, graphics output, by Majid Azmoon, pg 12-15. 7470A.

Manufacturing Team in the R&D Lab, by Bob Porcelli, pg 13

[Author:] Majid [Maj] Azmoon, pg 15

Correction: Figure 13 on page 26 in the article “Measuring Waveform Recorder Performance”, page 21 in the November 1982 issue, has some incorrect labels, pg 15

Controlling a Graphics Plotter with a Handheld Programmable Calculator. The plotter is the 7470A and the calculator is the HP-41C, by Robert M. Miller, Randy A. Coverstone, pg 16-18

[Authors:] Robert [Bob] M. Miller, Randy A. Coverstone, pg 18

Index: Volume 33 January 1982 through December 1982. PART 1: Chronological Index, pg 19-20. PART 2: Subject Index, pg 20-21. PART 3: Model Number Index, pg 22. PART 4: Author Index, pg 22.

Low-Cost Plotter Electronics Design. Custom servo ICs and gate array logic circuits allow a single-board design, by David M. Ellement, Neal J. Martini, Peter L. Ma, pg 23-26. 7470A.

Custom IC Electronics for a Low-Cost Plotter, by Peter Ma, pg 25

[Authors:] Peter L. Ma, David M. Ellement, pg 25

Plotter Drive Motor Encoder Design. This compact optical encoder is installed inside the drive motor housing, by Arthur K. Wilson, Daniel E. Johnson, pg 26-27. 7470A.

[Authors:] Arthur [Art] K. Wilson, Daniel [Dan] E. Johnson, pg 27

Graphics Plotter Mechanical Design for Performance and Reliability at Low Cost. A grit-wheel paper drive, low-mass pen carriage, and electronic limit sensing provide an elegant, simple and accurate plotting mechanism, by David C. Tribolet, Chuong C. Ta, Robert J. Porcelli, Richard M. Kemplin, David M. Petersen, pg 28-33. 7470A.

[Author:] David M. Petersen, pg 32

[Authors:] Robert [Bob] J. Porcelli, David [Dave] C. Tribolet, Chuong C. Ta, Richard [Dick] M. Kemplin, pg 33

An Improved ac Power Switch. Turning ac power on and off isn’t always as simple as it seems. Here’s an ac power controller that is safe, reliable, long-lived, digitally controlled, and interference-free, by Raymond A. Robertson, pg 34-40. 14570A.

Testing the 14570A, pg 38-39

[Author:] Raymond [Ray] A. Robertson, pg 40