January 1981 v.32 n.1

Cover: Model 82153A digital bar-code wand for use with the HP-41C Calculator

Handheld Scanner Makes Reading Bar Codes Easy and Inexpensive. This lightweight wand contains the light source, reflected-light sensor and digital signal shaping circuitry needed for scanning bar-code patterns reliably, by Edward G. Weaver, Jr., Donald L. Lubin, John J. Uebbing, pg 3-10. HEDS-3000, HEDS-1000, 82153A.

What is a Bar Code? pg 7-8

[Authors:] Edward [Eddie] G. Weaver, Jr., Donald [Don] L. Lubin,  John J. Uebbing, pg 9

Reading Bar Codes for the HP-41C Programmable Calculator. A new accessory for HP’s most powerful handheld calculator quickly enters data and programs from printed bar code, by David R. Conklin, Thomas L. Revere III, pg 11-14. 82153A.

[Authors:] Thomas [Tom] L. Revere III, David [Dave] R. Conklin, pg 14

A High Quality Low-Cost Graphics Tablet. It enables the user to interact easily with a computer graphics system to generate illustrations using predefined and user-defined shapes, point-to-point plotting, and continuous line drawing or tracing, by Donald J. Stavely, pg 15-24. 9111A.

Capacitive Stylus Design. The stylus for the 9111A Graphics Tablet is slim, rugged and provides tactile feedback, by Susan M. Cardwell, pg 17-18

[Author:] Susan M. Cardwell, pg 17

Programming the Graphics Tablet. Software packages for several HP computers use the tablet’s built-in capabilities to create diagrams, figures and charts, by Debra S. Bartlett, pg 20-21

[Author:] Debra [Debbie] S. Bartlett, pg 21

Tablet/Display Combination Supports Interactive Graphics. A graphics tablet combined with vector-scan display system provides a powerful, inexpensive graphics workstation, by David A. Kinsell, pg 22-23

[Author:] David [Dave] A. Kinsell, pg 23

[Author:] Donald [Don] J. Stavely, pg 24

Programming for Productivity: Factory Data Collection Software. DATACAP/1000 is a software tool for designing and managing data collection networks. Running on an HP 1000 Computer System, it is flexible, easy to use, and compatible with user-written routines, by Steven H. Richard, pg 25-31. HP1000, 92080A.

A Terminal Management Tool. It provides a reentrant environment for HP 1000 Computers, simplifying the development of multiterminal applications, by Francois Gaullier, pg 30-31

[Authors:] Francois Gaullier, Steven [Steve] H. Richard, pg 31

February 1981 v.32 n.2

Cover: Model 8662A Synthesized Signal Generator

A High-Purity, Fast-Switching Synthesized Signal Generator. When the lowest possible noise is a critical requirement for a programmable frequency source, this generator can do the job. Rapid switching and high output-level accuracy are two of its other advantages, by Roland Hassun , pg 3-7. 8662A.

Spectrail Purity, by Roland Hassun, pg 4

[Author:] Roland [Rolly] Hassun, pg 7

Digital Control for a High-Performance Programmable Signal Generator. Front-panel, internal and remote control of a complex instrument calls for a microprocessor-based controller, by Hamilton C. Chisholm, pg 8-11. 8662A.

8662A Power-On and Self-Test Sequences. The ROM and RAM tests have some clever twists, by Albert W. Kovalick, pg 9-10

[Author:] Albert [Al] W. Kovalick, pg 10

[Author:] Hamilton [Ham] C. Chisholm, pg 11

Low-Noise RF Signal Generator Design. Seven phase-locked loops and some innovative techniques did the job, by Dieter Scherer, Donald W. Mathiesen, Fred H. Ives, Bill S. Chan, William J. Crilly, Jr., pg 12-22. 8662A.

A Switching Power Supply for a Low-Noise Signal Generator. An unusual  choice, because of switching noise, but the benefits outweighed the problems, by Gerald L. Ainsworth, pg 20. 8662A.

[Author:] Gerald [Jerry] L. Ainsworth, pg 20

[Authors:] Fred H. Ives, Dieter Scherer, Donald [Don] W. Mathiesen, pg 21

[Authors:] William [Skip] J. Crilly, Jr., Bill S. Chan, pg 22

A High-Purity Signal Generator Output Section. This section supplies a low-noise output with unprecedented level accuracy, by Donald T. Borowski, David L. Platt, pg 22-27

[Authors:] Donald [Don] T. Borowski, David [Dave] L. Platt, pg 26

Product Design for Precision and Purity. Shielding and reliability are major considerations, by Robert L. DeVries, pg 28-30. 8662A.

[Author:] Robert [Bob] L. DeVries, pg 30

Verifying High Spectral Purity and Level Accuracy in Production. The question is how to test a state-of-the-art product without losing production-line efficiency, by John W. Richardson, pg 30-32. 8662A.

[Author:] John W. Richardson, pg 32

March 1981 v.32 n.3

Cover: A piece of cultured (laboratory-grown) quartz

New Display Station Offers Multiple Screen Windows and Dual Data Communications Ports. This versatile computer terminal can act like four virtual terminals. It’s designed for data entry and program development, by Gary C. Staas, pg 3-8. 2626A.

[Author:] Gary C. Staas, pg 7

Display Station’s User Interface is Designed for Increased Productivity. Easy access to an extensive feature set requires a thorough, thoughtful approach to the user interface, by Gordon C. Graham, pg 8-12. 2626A.

[Author:] Gordon C. Graham, pg 11

Hardware and Firmware Support for Four Virtual Terminals in One Display Station. The goals were 2645A compatibility, improved price/performance and reliability and ease of use, manufacturing and service, by John D. Wiese, Srinivas Sukumar, pg 13-15. 2626A, 2645A.

[Authors:] Srinivas Sukumar, John D. Wiese, pg 15

A Silicon-on-Sapphire Integrated Video Controller. Integration was considered mandatory to make the display system practical and reliable, by Jean-Claude Roy, 16-19. 2626A.

[Author:] Jean-Claude [Jean] Roy, pg 19

SC-Cut Quartz Oscillator Offers Improved Performance. This compact oscillator is designed to serve as a built-in precision frequency source. New technology and packaging provide lower power consumption, faster warmup, better stability and lower phase noise, by Robert L. Wilson, J. Robert Burgoon, pg 20-29. 10811A/B.

The SC Cut, a Brief Summary. First introduced in 1974, the stress compensated cut has many virtues, by Charles A. Adams, John A. Kusters, pg 22-23

[Authors:] Charles A. Adams, John [Jack] A. Kusters, pg 23

Flexible Circuit Packaging of a Crystal Oscillator. Selectively stiffened flexible circuitry is a radical approach that meets tough objectives, by James H. Steinmetz, pg 26-28. 10811A/B.

[Author:] James [Jim] H. Steinmetz, pg 28

[Authors:] J. Robert [Bob] Burgoon, Robert [Bob] L. Wilson, pg 29

New Temperature Probe Locates Circuit Hot Spots. Use it with any general-purpose digital multimeter and some HP oscilloscopes to get readings directly in degrees Celsius, by Marvin F. Estes, Donald Zimmer, Jr., pg 30-32. 10023A.

[Authors:] Marvin F. Estes, Donald [Don] Zimmer, Jr., pg 32

April 1981 v.32. n.4

Cover: Materials Management/3000

An Interactive Material Planning and Control System for Manufacturing Companies. Drawing on HP’s own experience, this powerful software for the HP 3000 Computer makes it easier to deal with the complexities of operating a manufacturing company, by Robert M. Steiner, Nancy C. Federman, pg 3-12. Material Management/3000, 32260A.

[Authors:] Nancy C. Federman, Robert [Bob] M. Steiner, pg 12

A Novel Approach to Computer Application System Design and Implementation. The Application Customizer helps designers construct generalized application systems and gives users tools to tailor these systems to their own research, by Loretta E. Winston, pg 13-18. Application Customizer, Application Monitor.

[Author:] Loretta E. Winston, pg 18

Automating Application System Operation and Control. The Application Monitor schedules, initiates and controls all interactive and background activities in an application system, by Barry D. Kurtz, pg 19-22

[Author:] Barry D. Kurtz, pg 22

Precision DVM Has Wide Dynamic Range and High Systems Speed. This digital voltmeter makes precision laboratory measurements with 100-nanovolt dc resolution and two-ppm linearity. Variable integration time allows four-digit measurements at 300 readings per second, by Charles A. Clark, James J. Ressmeyer, Lawrence T. Jones, pg 23-32. 3456A.

Voltmeter Stores Measurement Instructions and Data, pg 30. 3456A.

[Authors:] Charles [Chuck] A. Clark, James [Jim] J. Ressmeyer, Lawrence [Larry] T. Jones, pg 31

May 1981 v.32 n.5

Cover: The exposure end of HP’s Electron Beam Lithography System

A Precision High-Speed Electron Beam Lithography System. This very fast electron beam system is designed for mask making or direct writing on wafers in an integrated circuit production environment, by Ronald K. Scudder, John C. Eidson, Wayne C. Haase, pg 3-13

Electron Beam Lithography, by Frank Ura, pg 5

Proximity Effect Correction by Processing, pg 6

[Authors:] Ronald [Ron] K. Scudder, Wayne C. Haase, John C. Eidson, pg 12

SAWR Device Fabrication, pg 13

A Precision, High-Current, High-Speed Electron Beam Lithography Column. The column’s field emission electron gun contributes to the system’s high speed, by Heui Pei Kuo, John Kelly, Timothy R. Groves, pg 14-20

A Precision X-Y Stage and Substrate Handling System for Electron Beam Lithography. This systems positions wafers and masks within 16 nanometres of the desired position, by Charles L. Merja, Earl E. Lindberg, pg 16-18

[Authors:] Earl E. Lindberg, Charles [Chuck] L. Merja, pg 18

[Authors:] Huei P. Kuo, Timothy [Tim] R. Groves, John Kelly, pg 20

Software Control for the HP Electron Beam Lithography System. A large, complex software package makes the system’s capabilities readily available to the user, by Bruce Hamilton, pg 21-23

[Author:] Bruce Hamilton, pg 23

Pattern Data Flow in the HP Electron Beam System. The pattern data turns the electron beam on and off at rates as high as 300 MHz, by Howard F. Lee, Michael J. Cannon, Robert B. Lewis, pg 24-27

[Authors:] Robert [Bob] B. Lewis, Howard F. Lee, Michael [Mike] J. Cannon, pg 26

Calibration of the HP Electron Beam System. Precision is achieved by measuring distortions and correcting them with software and electronics, by Geraint Owen, Faith L. Bugely, Ian F. Osborne, Robert B. Schudy, pg 27-33

Software for Octopole Calibration, pg 29

[Authors:] Robert [Bob] B. Schudy, Ian F. Osborne, Faith L. Bugely, Geraint Owen, pg 33

Digital Adaptive Matched Filter for Fiducial Mark Registration. Detecting registration marks on substrates is a problem of extracting a known signal from noise, by Tsen-gong Jim Hsu, pg 34-36

[Author:] Tsen-gong Jim Hsu, pg 36

June 1981 v.32 n.6

Cover: VLSI Design and Artwork Verification

Viewpoints: Marco Negrete on Structured VLSI Design, pg 3-4

[Author:] Marco R. Negrete, pg 4

VLSI Design Strategies and Tools. A survey of present approaches and possible future directions at Hewlett Packard, by Daniel J. Griffin, William J. Haydamack, pg 5-12

Advanced Symbolic Artwork Preparation (ASAP). ASAP is the top end of HP’s bipolar design methods, by P. Kent Hardage, Kyle M. Black, pg 8-10

[Authors:] P. Kent Hardage, Kyle M. Black, pg 10

VLSI Makes 32-Bit CPU Chip Possible, pg 11

[Authors:] William [Bill] J. Haydamack, Daniel [Dan] J. Griffin, pg 12

Design and Simulation of VLSI Circuits. Logic simulators, circuit simulators, and schematic editors aid the designer, by Richard I. Dowell, Ravi M. Apte, Louis K. Scheffer, pg 12-18

Transistor Electrical Characterization and Analysis Program (TECAP). More accurate models are needed as simulation becomes more important, by Ebrahim Khalily, pg 16-17

[Authors:] Ebrahim Khalily, Louis [Lou] K. Scheffer, pg 17

[Authors:] Richard [Dick] I. Dowell, Ravi M. Apte, pg 18

An Interactive Graphics System for Structured Design of Integrated Circuits. Multilevel symbolic representation and incremental design rule checking facilitate the creation of physical IC layouts, by William J. McCalla, Diane F. Bracken, pg 18-25. IGS.

IC Layout on a Desktop Computer. This small but powerful system has many of the capabilities of IGS and is compatible with it, by Thomas H. Baker, pg 20-21

[Author:] Thomas [Tom] H. Baker, pg 21

[Authors:] Diane F. Bracken, William [Bill] J. McCalla, pg 25

VLSI Design and Artwork Verification. Geometric and circuit level checking verify proper operation, by Michael G. Tucker, William J. Haydamack, pg 25-29.

See Also: Correction: Replacement for the figure on page 26 in the article “VLSI Design and Artwork Verification”, page 32 in the July 1981 issue

[Author:] Michael [Mike] G. Tucker, pg 28

University and Industrial Cooperation for VLSI. The benefits flow in both directions, by Merrill W. Brooksby, Patricia L. Castro, pg 29-33

A Process Control Network. Many small computers smooth the flow of wafers and help make processes transportable, by Christopher R. Clare, pg 30-31

[Author:] Christopher [Chris] R. Clare, pg 31

[Authors:] Merrill W. Brooksby, Patricia [Pat] L. Castro, pg 32

Benefits of Quick-Turnaround Integrated Circuit Processing. Going quickly from designs to chips aids the design process and improves yields, by Patricia L. Castro, Merrill W. Brooksby, Fred L. Hanson, pg 33-35

[Author:] Fred L. Hanson, pg 35

Viewpoints: David Packard on University and Industry Cooperation, pg 36

[Author:] David [Dave] Packard, pg 36

July 1981 v.32 n.7

Cover: Model 3054A Automatic Data Acquisition and Control System

Instrument System Provides Precision Measurement and Control Capabilities. Measurement and control instruments are integrated in a system package designed for easy use in data acquisition and control situations. This system is supported by software for common monitoring and actuating applications, by Virgil L. Laing, pg 3-8. 3054A.

Thermocouple conversion and Transducer Curve Fitting, pg 4

Why Compensate Thermocouples? Pg 5

Precision Data Acquisition Teams up with Computer Power. This data acquisition/control system includes HP’s most powerful technical computer, by Lawrence E. Heyl, pg 6. 3054C.

[Author:] Lawrence [Larry] E. Heyl, pg 6

Data Logging is Easy with an HP-85/3054A Combination. Here’s a compact data recording and display system with easy-to-use software, by David L. Wolpert, pg 7-8

[Authors:] David [Dave] L. Wolpert, Virgil L. Laing, pg 8

Versatile Instrument Makes High-Performance Transducer-Based Measurements. This instrument serves as the eyes, ears, and hands for a computer-controlled system that acquires data from transducers and controls equipment and processes, by Thomas J. Heger, James S. Epstein, pg 9-15. 3497A.

Internal Control of the 3497A Data Acquisition/Control Unit, pg 13

[Authors:] James [Jim] S. Epstein, Thomas [Tom] J. Heger, p15

Plug-in Assemblies for a Variety of Data Acquisition/Control Applications. There are units for multiplexing, counting, digital and analog inputs and outputs, and thermocouple measurements, among others, by Thomas J. Heger, Patricia A. Redding, Richard L. Hester, pg 16-22. 9915A.

[Authors:] Patricia [Pat] A. Redding, Richard [Rick] L. Hester, pg 22

Desktop Computer Redesigned for Instrument Automation. Combining the system development ease of a desktop computer with the configuration flexibility of a board computer provides the instrumentation system designer with a new alternative for automation, by Vincent C. Jones, pg 23-32. 9915A.

A Unifying Approach to Designing for Reliability. Strife testing can help the designer realize a more reliable product, by Kenneth F. Watts, pg 24-25

[Author:] Kenneth [Ken] F. Watts, pg 25

Designing Testability and Serviceability into the 9915A. A computer that tests itself makes it easier to diagnose and fix system problems, by David J. Sweetser, pg 27-28

[Author:] David [Dave] J. Sweetser, pg 27

Operator Interface Design. You don’t get a keyboard or CRT display with a modular computer, but you can add them if you want to, by Robert A. Gilbert, pg 29-30. 9915A.

[Author:] Robert [Bob] A. Gilbert, pg 30

Cost-Effective Industrial Packaging. A rugged low-cost package is essential for a modular computer, by Eric L. Clarke, pg 31

[Author:] Eric L. Clarke, pg 31

[Author:] Vincent [Vince] C. Jones, pg 32

Correction: Replacement for the figure on page 26 in the article “VLSI Design and Artwork Verification”, page 25 in the June 1981 issue, pg 32

August 1981 v.32 n.8

Cover: HP power MOSFET fits in the schematic diagram of a 65000A Power Supply

200-kHz Power FET Technology in New Modular Power Supplies. These small, reliable 50-watt supplies are designed for OEM (original equipment manufacturer) use anywhere in the world, by Richard Myers, Robert D. Peck, pg 3-9. 65000A.

Magnetic Components for High-Frequency Switching Power Supplies. The goals were small size, 200-kHz operation, safety, and semiautomated manufacturing, by Winfried Seipel, pg 8-9

[Authors:] Richard [Rich] Myers, Winfried [Win] Seipel, Robert [Bob] D. Peck, pg 9

Laboratory-Performance Autoranging Power Supplies using Power MOSFET Technology. State-of-the-art components and circuit design enable this new generation of laboratory and system supplies to set new standards for performance and flexibility, by John W. Hyde, Dennis W. Gyma, Paul W. Bailey, Daniel R. Schwartz, pg 11-17. 6024A, 6012A.

[Authors:] Paul W. Bailey, John W. Hyde, Dennis W. Gyma, Daniel [Dan] R. Schwartz, pg 16

The Vertical Power MOSFET for High-Speed Power Control. A vertical semiconductor device structure provides a power MOSFET that can switch high currents and voltages very rapidly which makes it useful for power supplies, pulse drivers, and switching amplifiers, by Victor Li, Dah Wen Tsang, Robert L. Myers, Karl H. Tiefert, pg 18-24. 6501.

Power MOSFET Performance Useful for Many Applications, pg 19

[Authors:] Karl H. Tiefert, Robert [Bob] L. Myers, Dan Wen Tsang, Victor Li, pg 23

MOSFET Fabrication Requires Special Care, pg 24

Power Line Disturbances and Their Effect on Computer Design and Performance. Noise induced on the ac power line by machinery, lightning, and even appliances can be deterimental to computer performance. By becoming familiar with the nature of the noise and its causes, the designer and user can take steps to minimize the effect on computers, by Arthur W. Duell, W. Vincent Roland, pg 25-32

Definitions: ac Power Anomalies, pg 27

[Authors:] W. Vincent [Vince] Roland, Arthur [Art] W. Duell, pg 32

September 1981 v.32 n.9

Cover: HP Model 47210A Capnometer

A Reliable, Accurate CO2 Analyzer for Medical Use. Measuring the amount of carbon dioxide in a patient’s breath is an important medical diagnostic tool. This instrument makes the measurement quickly and easily without cumbersome calibration requirements, by Rodney J. Solomon, pg 3-21. 47201A.

Infrared Absorption, pg 4

A Miniature Motor for the CO₂ Sensor (with Thanks to Kettering). The rotor contains optical elements, is the size of a coin, and rotates at 2400 r/min, by Edwin B. Merrick, pg 8-9

[Author:] Edwin [Ed] B. Merrick, pg 8

Fabrication of Sensor Requires Special Care, pg 10-11

An End-Tidal/Respiration-Rate Algorithm. An infrared absorption signal is processed digitally to yield CO₂ level and rate of breathing, by John J. Krieger, pg 12-13

[Author:] John J. Krieger, pg 13

In-service CO₂ Sensor Calibration. Quick and easy calibration is essential for a medical instrument, by Russell A. Parker, Rodney J. Solomon, pg 16-18. 47210A.

[Author:] Russell [Russ] A. Parker, pg 18

Making Accurate CO2 Measurements. This system produces accurate gas mixtures for CO₂ sensor calibration, by John J. Krieger, pg 19-20

[Author:] Rodney [Rod] J. Solomon, pg 20

A Versatile Low-Frequency Impedance Analyzer with an Integral Tracking Gain-Phase Meter. This instrument measures impedance parameters, gain, phase, and group delay of individual components, circuit sections, and complete circuits. The measurements are automatic, wideband, and made under variable frequency and/or dc bias voltage conditions, by Kanuyaki Yafi, Takeo Shimizu, Yoh Narimatsu, pg 22-28. 4192A.

[Authors:] Yoh Marimatsu, Kazuyuki Yagi, Takeo Shimizu, pg 28

A Fast, Programmable Pulse Generator Output Stage. A new pulse generator supplies fast-transition pulses for testing 100k ECL, advanced Schottky TTL and other fast logic families, by Peter Aue, pg 29-32. 8161A.

[Author:] Peter Aue, pg 32

October 1981 v.32 n.10

Cover: A portion of the recording mechanism of the 4700A Cardiograph

Development of a High-Performance, Low-Mass, Low-Inertia Plotting Technology. A new vector plotter technology makes possible small, inexpensive graphics products that provide high-quality plots quickly, by Charles E. Tyler, Lawrence LaBarre, Wayne D. Baron, Robert G. Younge, pg 3-7. 4700A, 7580A.

Digital Control Simplifies X-Y Plotter Electronics, by W. D. Baron, pg 5-6

[Author:] Charles [Chuck] E. Tyler, Lawrence [Larry] LaBarre, Robert [Rob] G. Younge, Wayne D. Baron, pg 7

Plotter Servo Electronics Contained on a Single IC. This integrated circuit chip greatly simplified the design of products using HP’s new plotting technology, by Clement C. Lo, pg 8-9

[Author:] Clement C. Lo, pg 9

An Incremental Optical Shaft Encoder Kit with Integrated Optoelectronics. This kit can be assembled easily by an OEM (original equipment manufacturer) to provide accurate digital information about shaft position and velocity in digitally controlled electromechanical systems, by John J. Uebbing, Mark G. Leonard, Howard C. Epstein, pg 10-15. HEDS-5000.

[Authors:] Mark G. Leonard, Howard C. Epstein, John J. Uebbing, pg 15

New Plotting Technology Leads to a New Kind of Electrocardiograph. A low-mass, low-inertia plotting mechanism provides high-quality ECG’s in a variety of convenient formats, by Peter H. Dorward, Martin K. Mason, Steven J. Koerper, Steven A. Scampini, pg 16-24. 4700A.

What Is an Electrocardiogram? pg 20

[Authors:] Martin [Marty] K. Mason, Steven J. Koerper, pg 23

[Authors:] Steven [Steve] A. Scampini, Peter H. Dorward, pg 24

November 1981 v.32 n.11

Cover: 7580A Drafting Plotter

Development of a Large Drafting Plotter. Developing a large X-Y plotter that provides drafting-quality drawings, requires minimal floor space and costs less than half comparable machines was not easy. This article outlines the history and performance features of HP’s largest X-Y plotter, by George W. Lynch, Marvin L. Patterson, pg 3-7. 7580.

[Authors:] George W. Lynch, Marvin L. Patterson, pg 7

Aspects of Microprocessor and I/O Design for a Drafting Plotter. The use of a powerful microprocessor allows the designer to provide desirable features without increasing the complexity of the hardware, by Neal J. Martini, Hatem E. Mostafa, Dale W. Schaper, Lowell J. Stewart, pg 7-11. 7850A.

[Authors:] Neal J. Martini, Lowell J. Stewart, Hatem E. Mostafa, Dale W. Schaper, pg 11

Motor Drive Mechanics and Control Electronics for a High-Performance Plotter. HP’s low-mass, low-inertia design greatly simplifies the mechanical drive and servo control electronics, by Myungsae Son, Terry L. Flower, pg 12-15. 7580A.

[Authors:] Terry L. Flower, Myungsae [Myron] Son, pg 15

Firmware Determines Plotter Personality. This firmware provides drafting-quality lettering, keeps track of pens and plotting parameters, and minimizes the need for operator adjustments, by Mark A. Overton, Larry W. Hennessee, Richard B. Smith, Andrea K. Frankel, pg 16-25. 7580A.

New Language Tools Aid Plotter Firmware Development, by Andrea K. Frankel, pg 24

[Authors:] Richard [Rick] B. Smith, Larry W. Hennessee, Mark A. Overton, Andrea K. Frankel, pg 25

Y-Axis Pen Handling System. An adaptive pen-lift mechanism, automatic pen selection and storage, and a sturdy drive system are key elements of this design, by David J. Perach, Samuel R. Haugh, Robert D. Haselby, pg 25-32. 7580A.

[Authors:] Samuel [Sam] R. Haugh, David [Dave] J. Perach, Robert [Bob] D. Haselby, pg 32

X-Axis Micro-Grip Drive and Platen Design. Moving paper accurately with grit-covered wheels requires careful attention to platen design and grit-wheel fabrication, by Ronald J. Kaplan, Robert S. Townsend, pg 33-36. 7580A.

[Authors:] Robert [Bob] S. Townsend, Ronald [Ron] J. Kaplan, pg 36

December 1981 v.32 n.12

Cover: a 280-megahertz SAW resonator

Surface-Acoustic-Wave Delay Lines and Transversal Filters. Novel, simple and compact electronic devices can be realized by exciting and detecting acoustic waves electrically on the surface of a solid. Technological advances in low-loss delay lines and bandpass filters are discussed, by William R. Shreve, Waguih S. Ishak, H. Edward Karrer, pg 3-8. SAW.

[Authors:] H. Edward [Ed] Karrer, William [Bill] R. Shreve, Waguih S. Ishak, pg 8

Surface-Acoustic-Wave Resonators. By reflecting acoustic waves back and forth on the surface of a crystal one can obtain resonant devices for frequencies in the UHF range, by Scott S. Elliott, Peter S. Cross, pg 9-17. SAW.

SAWR Fabrication. The process used to make surface acoustic-wave resonators is similar in many ways to the processes used to make integrated circuits, by Robert C. Bray, Yen C. Chu, pg 11-13

[Authors:] Yen C. Chu, Robert [Bob] C. Bray, pg 13

280-MHz Production SAWR. It’s the first SAW component designed for use in an HP instrument, by Marek E. Mierzwinski, Mark E. Terrien, pg 15-16

[Authors:] Mark E. Terrien, Marek E. Mierzwinski, pg 16

[Authors:] Peter S. Cross, Scott S. Elliott, pg 17

Physical Sensors using SAW Devices. Novel force and pressure transducers sense the effects of mechanical stress on surface wave velocity and resonant frequency, by J. Fleming Dias, pg 18-20

[Author:] J. Fleming Dias, pg 20

Proximity Effect Corrections by Means of Processing: Theory and Applications. HP’s electron beam lithography system has been used to evaluate methods of reducing the unwanted effects of electron scattering, by Paul Rissman, Michael P.C. Watts, pg 21-27

Monte Carlo Simulations for Electron Beam Exposures. A computer model of electron scattering aids research into this effect, by Armand P. Neukermans, Steven G. Eaton, pg 24-25

[Authors:] Steven G. Eaton, Armand P. Neukermans, pg 24

[Authors:] Paul Rissman, Michael P. C. Watts, pg 27

Index: Volume 32 January 1981 through December 1981. PART 1: Chronological Index, pg 28-29. PART 2: Subject Index, pg 29-31. PART 3: Model Number Index, pg 31. PART 4: Author Index, pg 31-32.

January 1980 v.31 n.1

Cover: Model 4191A RF Impedance Analyzer

Automated Testing of PCM Communications Equipment with a Single Self-Contained Instrument. Microprocessor control of multiple sources and detectors within this compact instrument achieves a new level of automation for voice-channel measurements in PCM multiplex equipment, by Mark Dykes, Andrew Batham, Virgil Marton, Robert Pearson, Mike Bryant, pg 3-15. 3779A/B.

PCM Transmission Systems, pg 4-5

Faster Results with Automatic Measurements, pg 7

End-to-End Measurements, pg 9

A Digital Attenuator with 1-dB Steps, pg 10

E & M Signaling Measurements, pg 11-12

[Authors:] Andrew [Andy] Batham, Mark Dykes, Mike Bryant, Robert [Bob] Pearson, Virgil Marton, pg 15

Software for an Automatic Primary Multiplex Analyzer. The built-in programs are at the heart of the Primary Multiplex Analyzer’s capabilities, by Mark Dykes, pg 16-21

Software Development, pg 19

Vector Impedance Analysis to 1000 MHz. This new impedance analyzer measures fourteen impedance parameters of two-terminal components. It’s fast, stable, accurate, and wide-range, by Toshio Ichino, Noriyuki Sugihara, Hideo Ohkawara, pg 22-32. 4191A.

Error Correction in the Impedance Analyzer, pg 25

February 1980 v.31 n.2

Cover: 8450A Spectrophotometer

Design and Performance of a Highly Integrated Parallel Access Spectrophotometer. This innovative ultraviolet/visible spectrophotometer solves many chemical analysis problems that were impossible for older photometric technology, by Barry G. Willis, pg 3-11. 8450A.

Analysis for Metals, by Gerald E. James, pg 5

Chemical Identification, by Gerald E. James, pg 6

Pharmaceutical Formulations Analysis, by Gerald E. James, pg 7

Liquid Chromatographic Determination of Steroids, by Barry G. Willis, pg 8

[Authors:] Barry G. Willis, Gerald [Jerry] E. James, pg 11

A Task-Oriented Approach to Spectrophotometry. The user specifies the measurement and the data reduction and display parameters and gets answers in the desired format, by Barry G. Willis, Arthur Schleifer, pg 11-17. 8450A.

[Author:] Arthur [Art] Schleifer, pg 16

An Optical System for Full-Spectrum Measurements. Unusual features are a folded configuration, elliptical mirrors, and holographic diffraction gratings, by Alfred Schwartz, George W. Hopkins, pg 17-20. 8450A.

Holographically-Recorded Diffraction Gratings, pg 19

[Authors:] Alfred [Fred] Schwartz, George W. Hopkins, pg 19

Light Detection and Measurement in a High-Performance Spectrophotometer. Proprietary detectors and a low-noise, high-resolution readout system measure light at 401 wavelengths in one second, by Robert W. Widmayer, Knud L. Kundsen, pg 20-24. 8450A.

[Authors:] Knud L. Knudsen, pg Robert [Bob] L. Widmayer, pg 24

Servo-Controlled Beam Director Provides Major Benefits. It solves many manufacturing problems and provides many user conveniences, by Lynn Weber, Mark P. Morganthaler, pg 24-28. 8450A.

[Authors:] Lynn Weber, Mark P. Morgenthaler, pg 28

A Microcomputer System for Spectrophotometric Data Processing. It turns large amounts of data into useful information and makes the 8450A a friendly machine, by Glenn C. Steiner, pg 29-31

[Author:] Glenn C. Steiner, pg 31

How the 8450A Was Developed. Here are the people and the technological milestones that produced this new spectrophotometer, by Richard E. Monnier, pg 31-32

March 1980 v.31 n.3

Cover: HP-41C

Powerful Personal Calculator System Sets New Standards. Customize this advanced new handheld calculator by plugging in extra memory, a magnetic card reader, a printer, and application modules. You can reconfigure the keyboard, too, by David R. Conklin, Bernard E. Musch, John J. Wong, pg 3-12. HP-41C.

Packaging the HP-41C. The liquid crystal display made it interesting for the package designers, by Gerald W. Steiger, pg 7

[Author:] Gerald [Jerry] W. Steiger, pg 7

[Authors:] Bernard [Bernie] E. Musch, John J. Wong, David [Dave] R. Conklin, pg 12

Card Reader Offers Compatibility and Expanded Capability. More powerful and useful than its predecessors, the HP-41C card reader can read cards written by earlier HP personal calculators, by Patrick V. Boyd, David J. Lowe, pg 12-15. 82104A.

[Authors:] David [Dave] J. Lowe, Patrick [Pat] V. Boyd, pg 14

Evolutionary Printer Provides Significantly Better Performance. As the power of a calculator increases, so must the abilities of its printer, by Donald L. Morris, Roger D. Quick, pg 15-19. HP-41C, 82143A.

[Authors:] Roger D. Quick, Donald [Don] L. Morris, pg 19

Bulk CMOS Technology for the HP-41C. This integrated circuit process has many characteristics that contribute to long battery life in a calculator, by Norman L. Johnson, Vijay V. Marathe, pg 20-22

[Authors:] Norman [Norm] L. Johnson, Vijay V. Marathe, pg 22

The First HP Liquid Crystal Display. LCD advantages include low-voltage and power requirements and good visibility in strong light, by Craig Maze, pg 22-24. HP-41C.

[Author:] Craig Maze, pg 24

High Density and Low Cost with Printed Circuit Hybrid Technology. Silicon integrated circuit chips are mounted directly onto printed circuit boards to save space and cost, by Robert N. Low, James H. Fleming, pg 25-26. HP-41C.

[Authors:] Robert [Bob] N. Low, James [Jim] H. Fleming, pg 26

An Economical, Portable Microwave Spectrum Analyzer. With a frequency range of 10 MHz to 21 GHz, a calibrated amplitude range of -111 to +30 dBm, and a dynamic range of 70 dB, this new spectrum analyzer has lab-grade performance yet is compact enough for field use, by Richard L. Belding, David H. Molinari, pg 27-32. 8559A.

[Authors:] Richard [Rick] L. Belding, Jr., David [Dave] H. Molinari, pg 32

April 1980 v.31 n.4

Cover: High-performance microwave counter products that test high-frequency equipment

Microwave CW and Pulse Frequency Measurements to 40 GHz. A new harmonic heterodyne frequency converter plug-in adds automatic 40-GHz frequency measurements to the universal capabilities of HP’s top counter, by Robert W. Offermann, Ronald E. Felsenstein, Richard F. Schneider, pg 3-14. 5355A.

A 400-to-1600-MHz ¸8 Prescaler. State-of-the-art technology went into its tiny amplifier, attenuator, and binary circuits, by Hans J. Jekat, pg 5-6. 5355A.

[Author:] Hans J. Jekat, pg 6

An Automatic Microwave Frequency Counter Test System to 40 GHz. Testing high-performance microwave counters isn’t a trivial task, but this system does it automatically, by Larry L. Koepke, pg 11-12

[Author:] Larry L. Koepke

[Authors:] Robert [Bob] W. Offermann, Richard [Dick] F. Schneider, Ronald [Ron] E. Felsenstein, pg 14

40-GHz Frequency Converter Heads. The heads down-convert microwave input signals to frequencies that are more easily transmitted over coaxial cables, by Mohamed M. Sayed, pg 14-19. 5356A.

40-GHz Synthesizer Tests Frequency Converter Heads, by Mohamed M. Sayed, pg 16-19. 5356A/B/C, 5355A..

[Author:] Mohamed M. Sayed, pg 19

A 26.5-GHz Automatic Frequency Counter with Enhanced Dynamic Range. A new sampler provides higher frequency coverage and 10 dB greater sensitivity than previous designs, by Ali Bologlu, pg 20-22. 5343A.

[Author:] Ali Bologlu, pg 22

Microwave Counter Applications. Radar, oscillator, and general high-frequency measurements are described, by Richard F. Schneider, pg 23-25

Laboratory Notebook: A Flexible Software Development Technique. If you have read-only memory to spare, you can use it to make changes in long-lead-time masked ROMs that you’ve already ordered, by Ronald E. Felsenstein, pg 25-26

May 1980 v.31 n.5

Cover: Model 3586A/B/C Selective Level Meters and Model 3336A/B/C Synthesizer/Level Generator

A Programmable Selective Level Meter (Wave Analyzer) with Synthesized Tuning, Autoranging and Automatic Calibration. Covering an input frequency range of 50 Hz to 32.5 MHz, this tuned voltmeter measures characteristics of both the voice channels and the multiplexed channels of FDM communications systems. An alternate version functions as a general-purpose wave analyzer, by Paul L. Thomas, pg 3-8. 3586A/B/C.

[Author:] Paul L. Thomas, pg 8

Precision Synthesizer/Level Generator has High Spectral Purity for Telecommunications Testing. Use it alone or as a tracking signal source for the 3586A/B/C Selective Level Meter. Three versions meet CCITT, North American, and general-purpose requirements, by Phillip D. Winslow, pg 9-13. 3336A/B/C.

On Carrier Return Loss Measurement, by Phillip D. Winslow, pg 10

A Monolithic Thermal Converter. Integrated circuit technology produces a low-cost, broadband, monolithic silicon thermal rms-to-dc converter, by Peter M. O’Neill, pg 12-13

[Author:] Peter [Pete] M. O’Neill, pg 12

[Author:] Phillip [Phil] D. Winslow, pg 13

Increased Versatility for a Versatile Logic State Analyzer. During analysis of program flow in a computer system, dynamically qualified multiphase clocking enables the Model 1610B to acquire for display all parts of an asynchronous transaction while excluding irrelevant events, by Justin S. Morrill, Jr., John D. Hansen, pg 14-18

[Authors:] John D. Hansen, Justin S. Morrill, Jr., pg 18

General-Purpose Module Adapts Dedicated Logic State Analyzer to Almost Any Microprocessor. Although conceived originally as a logic-state analyzer dedicated to particular microprocessors, the Model 1611A now has a general-purpose module that allows its to work with almost any microprocessor, by Deborah J. Ogden, pg 19-24

[Author:] Deborah [Debbie] J. Ogden, pg 24

June 1980 v.31 n.6

Cover: Model 3850A

Electronic Distance Measurement for Industrial and Scientific Applications. This new distance meter features a transducer mode in which it measures the distance to a moving target nine time per second for output to a computer or other controller, by David E. Smith, pg 3-11. 3850A, 38001A.

A Versatile Computer Interface for Electronic Distance Meters, by David Smith, pg 5

Dynamic Distance Meter Performance Testing, by Dean Buck, pg 8

[Author:] David [Dave] E. Smith, pg 11

Industrial Distance Meter Applications. Proportional and intelligent position control systems, dynamic monitoring and static monitoring are discussed, by David E. Smith, Troy L. Brown, pg 11-19. 3850A.

[Author:] Troy L. Brown, pg 18

Mass Storage Management – A Unified Approach. After several years of work on mass storage management software at HP’s Desktop Computer Division, a generalized philosophy has emerged, by William A. Hanna, pg 20-24

[Author:] William [Bill] A. Hanna, pg 24

July 1980 v.31 n.7

Cover: The HP-85, HP’s first personal computer

A New World of Personal/Professional Computation. Now, an inexpensive computer system with integral display, mass storage, hard copy, and graphics capability is available for personal use by the technical professional or first-time computer user, by Todd R. Lynch, pg 3-7. HP-85.

[Author:] Todd R. Lynch, pg 6

Adding I/O Capability to the HP-85. With the implementation of I/O features, the capabilities of a self-contained personal computer system are expandable to control instruments, add on more powerful peripherals and even talk to other computers, by John H. Nairn, David J. Sweetser, Tim I. Mikkelsen, pg 7-13

Using HP-85 I/O Capabilities, by Tim Mikkelsen, pg 13

[Authors:] Tim I. Mikkelsen, John N. Nairn, pg 13

[Author:] David [Dave] J. Sweetser, pg 14

A Compact Tape Transport Subassembly Designed for Reliability and Low Cost. New techniques in electrical and mechanical design were required, by Brian G. Spreadbury, Douglas J. Collins, pg 14-19. 98200A.

[Authors:] Douglas [Doug] J. Collins, Brian G. Spreadbury, pg 19

A High-Quality CRT Display for a Portable Computer. This compact CRT subassembly displays graphics data in addition to alphanumeric information, by James F. Bausch, pg 19-22. HP-85.

[Author:] James [Jim] F. Bausch, pg 22

A Compact Thermal Printer Designed for Integration into a Personal Computer. It can print program listings or output hard copies of displayed alphanumeric and graphics data, by Ronald W. Keil, Clement C. Lo, pg 22-26. HP-85.

An Efficient Power Supply for the HP-85, by Jim Bausch, pg 24

Enhanced BASIC Language for a Personal Computer. HP-85 BASIC has commands for plotting graphics data, using mass storage, and performing a wide variety of functions, by Nelson A. Mills, Homer C. Russell, Kent R. Henscheid, pg 26-32

[Authors:] Ronald [Ron] W. Keil, Clement C. Lo, pg 26

Random Number Generation, by Homer Russell, pg 28

Faster Integer Processing, by Homer Russell, pg 30

[Authors:] Nelson A. Mills, Kent R. Henscheid, Homer C. Russell, pg 32

August 1980 v.31 n.8

Cover: 8903A Audio Analyzer

A Complete Self-Contained Audio Measurement System. This automatic, autoranging audio analyzer has the signal source, distortion analyzer, and counter to make the measurements most often needed in audio-frequency testing, by James D. Foote, pg 3-17. 8903A.

Audio analyzer Applications, pg 6-7

Making the Most of a Microprocessor-Based Instrument Controller. In an audio analyzer, microprocessor control means automatic operation, “guaranteed” accurate measurements and extra features, by Corydon J. Boyan, pg 8-9. 8903A.

[Author:] Corydon [Cory] J. Boyan, pg 9

Design for a Low-Distortion, Fast-Settling Source. It’s based on a state-variable filter with refinements, by George D. Pontis, pg 10-11. 8903A.

Floating a Source Output. The floating output lets the user eliminate ground-loop errors, sum signals, and add dc offsets, by George D. Pontis, pg 12-13. 8903A.

[Author:] George D. Pontis, pg 13

A Digitally Tuned Notch Filter. It eliminates the fundamental frequency component of the incoming signal for distortion and noise measurements, by Chung Y. Lau, pg 14-15. 8903A.

[Author:] Chung Y. Lau, pg 15

[Author:] James [Jim] D. Foote, pg 17

A Custom LSI Approach to a Personal Computer. Nine HP-produced large-scale integrated circuits make the HP-85 possible, by Todd R. Lynch, pg 18-22

The HP-85 Software Development System, by Nelson A. Mills, pg 21

[Author:] Nelson A. Mills, pg 21

[Author:] Todd R. Lynch, pg 22

Handheld Calculator Evaluates Integrals. The HP-34C is the first handheld calculator to have a key that performs numerical integration almost automatically. It may change your attitude towards what used to be regarded as a dreary tedious task, by William M. Kahan, pg 23-32

[Author:] William M. Kahan, pg 32

September 1980 v.31 n.9

Cover: Model 5335A Universal Counter

A Fully Integrated, Microprocessor-Controlled Total Station. Here’s a new instrument that measures angles and distances, combines these readings, and yields true three-dimensional position information, by Alfred F. Gort, pg 3-11. 3820A.

Distance Correction for Variations in Air Temperature and Pressure, pg 9

Development of the 3820A, pg 10

[Author:] Alfred [Al] F. Gort, pg 10

Mechanical Design Constraints for a Total Station. Electronic position measurement accuracy isn’t usable without a stable frame and bearing system, by Ronald K. Kerschner, pg 12-14. 3820A.

[Author:] Ronald [Ron] K. Kerschner, pg 13

A Compact Optical System for Portable Distance and Angle Measurements. When the same optical system has to serve as both telescope and distance-meter optics, you have a lens design challenge, by David J. Sims, Charles E. Moore, pg 14-16. 3820A, Roelof’s Solar Prism Adaptor.

[Authors:] David [Dave] J. Sims, Charles E. Moore, pg 16

An Approach to Large-Scale Non-Contact Coordinate Measurements. How do you verify that a huge airplane is properly assembled?, by Douglas R. Johnson, pg 16-20. 3820A.

Aircraft Inspection, pg 17

Interfacing the 3820A via the HP-IB. The total station can communicate with computers for further processing of distance and angle information, by Gerald F. Wasinger, pg 18-19

[Author:] Gerald [Jerry] F. Wasinger, pg 19

Antenna Assembly, pg 19. 3820A.

A Deflection Measurement Example and Error Considerations, pg 20

[Author:] Douglas [Doug] R. Johnson, pg 20

Automatic Measurements with a High-Performance Universal Counter. Built-in calculating capability, automatic measurement routines, innovative trigger level controls and interpolators, and an optional DVM add up to a powerful, versatile measurement system, by Ronald C. Jensen, Gary D. Sasaki, pg 21-31. 5335A.

Third Input Extends Range to 1300 MHz. It’s a prescaler, but the mainframe’s interpolators prevent loss of resolution, by David M. Dipietro, pg 24- 25. 5335A.

[Author:] David [Dave] M. DiPietro, pg 24

A Voltmeter for a Universal Counter. Precision voltage-to-frequency converters with software error correction provide a systems voltmeter for little added cost, by Val D. McOmber, pg 28-29. 5335A.

[Author:] Val D. McOmber, pg 29

5335A Self Test and Diagnostics. Built-in checks boost user confidence and make troubleshooting easy, by Robert J. Lafollette, pg 30

[Author:] Robert [Bob] J. LaFollette, pg 30

[Authors:] Ronald [Ron] C. Jensen, Gary D. Sasaki, pg 31

A Low-Cost Universal Counter for Systems Applications, by Michael J. Ward, David M. George, pg 32. 5316A.

October 1980 v.31 n.10

Cover: Model 64000 Logic Development System consisting of a work station, disc drive and printer

Logic Development System Accelerates Microcomputer System Design. This expandable, flexible system offers a complete set of facilities for generating and debugging microprocessor-system hardware and software. It’s designed with next-generation VLSI circuits in mind, by Brian W. Kerr, Thomas A. Saponas, pg 3-12. 64000.

Resource Sharing in the Logic Development System. Here’s how six processors share as many as eight disc drives and a printer, by Alan J. DeVilbiss, pg 7-8

[Author:] Alan [Al] J. DeVilbiss, pg 8

64500 PROM Programmer, by Roger Cox, pg 9

64000 Command Parsing, pg 11

[Authors:] Brian W. Kerr, Thomas [Tom] A. Saponas, pg 12

Emulators for Microprocessor System Development. To the system under development the emulator looks like a microprocessor, yet the designer has complete analysis and debugging facilities, by Milo E. Muterspaugh, Gordon A. Greenley, James B. Donnelly, pg 13-20. 64000.

[Authors:] James [Jim] B. Donnelly, Gordon A. Greenly, Milo E. Muterspaugh, pg 20

The Pascal/64000 Compiler. The structured programming features of Pascal are augmented for microprocessor code development, by Jacques Gregori Bourque, Izagma I. Alonso-Velez, pg 20-27

Program Debugging with Pascal/64000. Expanded listings show the compiler output interleaved with the source statements to make it easy to trace execution, by P. Alan McDonley, pg 22-23

[Author:] P. Alan [Al] McDonley, pg 23

The 64000 Linker. table-driven architecture supports a variety of microprocessors, by James B. Stewart, pg 25-26

[Author:] James [Kip] B. Stewart, pg 26

[Authors:] Jacques Gregori [Greg] Bourque, Izagma I. Alonso-Velez, pg 27

An Assembler for all Microprocessors. In addition to generating code for standard microprocessors, this table-driven assembler allows the user to create an assembler for a custom chip, by Brad E. Yackle, pg 28-30. 64000.

[Author:] Brad E. Yackle, pg 29

Viewpoints: Chuck House on the Electronic Bench. VLSI will create both a need for new analysis and synthesis tools and a way to realize them, pg 30-32

[Author:] Charles [Chuck} H. House, pg 32

November 1980 v.31 n.11

Cover: Hewlett Packard 78500 Series Patient Information Centers

Patient Monitoring Enhanced by New Central Station. Multi-microprocessor architecture and a new integrated display concept provide more patient data, fewer false alarms, internal self-tests and extensive recording capabilities in an easy-to-operate system, by Larry L. Nielsen, Timothy B. Blancke, pg 3-11. 78500, 78501A, 78502A.

[Authors:] Timothy [Tim] B. Blancke, Larry L. Nielson, pg 10

High-Speed Raster Technique Provides Flexible Display. Smooth waveforms on a raster-scan CRT display are made possible by a combination of higher scan rate and beam width modulation, by Robert L. Stettiner, George L. Adleman, pg 11-15. 78500.

Basic Deflection Techniques, pg 12

[Authors:] George L. Adleman, Robert [Bob] L. Stettiner, pg 14

Sample Selection Filtering and the Bandwidth Problem, pg 14

Multi-Processor Architecture and Communications for Patient Monitoring. Four processors use three different communication links to share tasks and accomplish the overall monitoring system, by James M. Rueter, pg 15-18. 78500, 78501A, 78502A, 78511A.

[Author:] James [Jim] M. Rueter, pg 18

Self-Test and Serviceability for Dependable Central Patient Monitoring. This system automatically analyzes itself for failures, reconfigures its units to continue operating when one unit fails, and notifies the operator of any malfunction, by Jeffrey M. Goldberg, pg 19-23. 78500.

[Author:] Jeffrey [Jeff] M. Goldberg, pg 23

Firmware for a Patient Monitoring Station. A matched-filter design accurately analyzes electrocardiogram waveforms, by Kim L. Hanna, pg 23-28. 78500.

Critical Regions for Process Communication and Coordination, pg 28. 78500.

[Author:] Kim L. Hanna, pg 28

An Interactive HP 3000/IBM Mainframe Link. More than a 3270 emulator, IML/3000 provides high-level intrinsics for interactive data interchange, and an inquiry and development facility that makes HP 3000 system terminals look like terminals attached to the IBM mainframe, by Connie J. Ishida, pg 29-32. 32229A.

[Author:] Connie Jean Ishida, pg 32

December 1980 v.31 n.12

Cover: System 45C desktop computer

Color Enhances Computer Graphics System. The addition of a color CRT, extensive graphics control statements and faster vector generation to a desktop computer provides a comprehensive graphics system for the display and interpretation of complex data, by John B. Frost, William L. Hale, pg 3-5. 45C, 9845C.

[Authors:] Willaim [Bill] L. Hale, John [Jack] B. Frost, pg 5

The System 45C User’s Firmware Interface. New language statements provide easy input of graphical data and control of color parameters for generation of curves, shapes and shaded areas, by Robert W. Fredrickson, Robert A. Jewett, pg 6-9

[Authors:] Robert [Bob] A. Jewett, Robert [Bob] W. Fredrickson, pg 9

Light Pen Aids User Interaction with Display. Getting a light pen to work with a raster-scan display is not easy, first several physical limitations had to be overcome, by Frederick J. Porter, pg 10-19. 45C.

Index: Volume 31 January 1980 through December 1980. PART 1: Chronological Index, pg 15-16. PART 2: Subject Index, pg 16-17. PART 3: Model Number Index, pg 17-18. PART 4: Author Index, pg 18.

[Author:] Frederick [Fred] J. Porter, pg 19

A Precision Color Raster-Scan Display for Graphics Applications. These scanning circuit designs provide a color display free from distracting anomalies, by Warren C. Pratt, pg 19-24. 45C.

[Author:] Warren C. Pratt, pg 24

Display System Designed for Color Graphics. System 45C’s graphics architecture yields high-speed color picture generation with area shading, by Harold L. Baeverstad, Jr., Clark C. Bruderer, pg 25-32

System 45C Power Supply Considerations. A separate power supply for the color display provides for easy upgrading of earlier System 45 Computers, by J. Steven Becker, pg 28

[Author:] J. Steven [Steve] Becker, pg 28

Display Characteristics and Timing, pg 30

[Authors:] Clark C. Bruderer, Harold [Harry] L. Baeverstad, Jr., pg 30

January 1979 v.30 n.1

Cover: Model 5315A Universal Counter

A Low-Cost, Microprocessor-Based 100-MHz Universal Counter. A special integrated-circuit counter chip works with the microprocessor to give this reciprocal-taking counter a range of capabilities formerly found only at a much higher price. Flexible input amplifiers, a novel battery pack, and low radiated emissions are other features, by Karl M. Blankenship, Michael J. Ward, Lewis W. Masters, pg 2-11. 5315A, 5314A.

Lowest-Cost HP Universal Counter Developed using LSI and Manufacturing Innovations, by Michael D. Wilson, David M. George, pg 8-9

[Authors:] David M. George, Michael [Mike] D. Wilson, pg 9

[Authors:] Lewis [Lew] W. Masters, Karl M. Blankenship, Michael [Mike] J. Ward, pg 10

A High-Performance Bipolar LSI Counter Chip using EFL and I²L Circuits. This state-of-the-art multiple-register counter chip contains all of the circuits needed for a 100-MHz universal counter except for the display, input amplifiers, power supply and controller (microprocessor), by William D. Jackson, Bosco W. Wong, pg 12-17. MRC, multiple-register counter.

Emitter Function Logic, by Bosco W. Wong, pg 15. EFL.

[Authors:] Bosco W. Wong, William [Bill] D. Jackson, pg 17

A Synthesized Signal Source with Function Generator Capabilities. This fully programmable signal source spans 13 decades in frequency (1mHz to 21 MHz) with synthesizer accuracy, and produces sine waves, square waves, triangles, and ramps with synthesizer stability and swept-frequency convenience, by Stanley E. Froseth, Dan D. Danielson, pg 18-26. 3325A.

[Authors:] Stanley [Stan] L. Froseth, Dan D. Danielson, pg 26

Viewpoints: Paul Baird on Electronic Equipment Reliability, pg 27-28

[Author:] Paul Baird, pg 28

February 1979 v.30 n.2

Cover: Model 7225A Plotter

A High-Quality Digital X-Y Plotter Designed for Reliability, Flexibility and Low Cost. A new linear step motor design cuts costs and improves reliability without sacrificing line quality. Microprocessors and plug-in personality modules provide the flexibility, by Terry R. Cobb, John A. Fenoglio, Bessie W. C. Chin, pg 2-7. 7225A.

[Author:] Terry R. Cobb, pg 6

[Authors:] John A. Fenoglio, Bessie W. C. Chin, pg 7

Linear Step Motor Design Provides High Plotter Performance at Low Cost, by Robert L. Ciardella, Lung-Wen Tsai, pg 7-14

Developing a Low-Cost Electrostatic Chart-Hold Table, by Alec J. Babiarz, pg 10-11

[Author:] Alec J. Babiarz, pg 11

[Authors:] Robert [Bob] L. Ciardella, Lung-Wen Tsai, pg 13

Simple, Efficient Electronics for a Low-Cost X-Y Plotter, by Peter Chu, William G. Royce, pg 14-18. 7225A.

[Authors:] Peter Chu, William [Bill] G. Royce, pg 18

A Closed-Loop System for Smoothing and Matching Step Motor Responses, by Philip P. Maiorca, Norman H. MacNeil, pg 18-23

[Authors:] Philip [Phil] P. Maiorca, Norman [Norm] H. MacNeil, pg 23

Multi-Frequency LCR Meters Test Components under Realistic Conditions. Covering frequency ranges of 100 Hz to 100 kHz and 10 kHz to 10 MHz, these two new automatic LCR meters each provide up to twelve test signal frequencies, continuously variable test signal levels, and a wide choice of displayed parameters, by Kohichi Maeda, Yoh Narimatsu, pg 24-32. 4274A, 4275A.

[Authors:] Kohichi Maeda, Yoh Narimatsu, pg 31

Appendix: Effects of Test Leads and Test Fixtures on Measurement Accuracy, pg 31

March 1979 v.30 n.3

Cover: Two well-devised board test systems and their very effective software

Circuit-Board Testing: Cost-Effective Production Test and Troubleshooting. Two new printed-circuit-board test systems find faults in complicated circuit boards quickly and efficiently to help speed production throughput, by Peter S. Stone, John F. McDermid, pg 2-8. DTS-70, 9571A, 3060A.

[Authors:] Peter [Pete] S. Stone, John E. McDermid, pg 8

Rapid Digital Fault Isolation with FASTRACE, by William A. Groves, pg 8-13

[Author:] William [Bill] A. Groves, pg 13

Software Simulator Speeds Digital Board Test Generation, by Kenneth P. Parker, pg 13-18. DTS-70.

Virtual Memory for TESTAID and FASTRACE, by Douglas L. Baskins, pg 17-18

[Author:] Douglas [Doug] L. Baskins, pg 18

[Author:] Kenneth [Ken] P. Parker, pg 19

Analog In-Circuit Component Measurements: Problems and Solutions, by David T. Crook, pg 19-22

[Author:] David [Dave] T. Crook, pg 22

User-Oriented Software for an Automatic Circuit-Board Tester, by Ed O. Schlotzhauer, pg 22-27. 3060A.

Testing the Tester, by Roland H. Burger, John J. Ketchum, James M. Brown, Scott E. Woodward, pg 26

[Author:] Ed O. Schlotzhauer, pg 27

Hardware Design of an Automatic Circuit Board Tester, by Kamran Firooz, Brian M. Wood, David T. Crook, Roland H. Burger, Francis F. Fiedler, pg 27-32. 3060A.

Board Testing with Signature Analysis, by Kamran Firooz, pg 31

[Authors:] Brian M. Wood, Roland H. Burger, Francis L. Fiedler, Kamran Firooz, pg 32

April 1979 v.30 n.4

Cover: HP 250 Small-Business Computer

A Human-Engineered Small-Business Computer. This entry level, low-cost system offers the first-time user a self-contained computing facility with full data base management capability, by A. Peter Hamilton, pg 3-5. HP 250.

Human-Engineering the Small-Business Computer. How to design a computer so it doesn’t seem forbidding to the uninitiated operator, by Barry Mathis, pg 4-5

[Authors:] Barry Mathis, A. Peter [Pete] Hamilton, pg 5

Cost-Effective Electronics for the Small-Business Computer. The emphasis is on maximum performance for the price, along with reliability and safety, by V. DeLloy Forbes, Gerald L. Meyer, pg 6-14. HP 250.

HP 250 Input/Output System. The system has to be smart enough to power-up and run with minimum operator assistance, by Dennis L. Peery, pg 11-12

[Authors:] V. DeLloy Forbes, Gerald [Gerry] L. Meyer, pg 14

HP 250 BASIC: A Friendly, Interactive, Powerful System Language. All the standard features of HP Business BASIC plus an interactive CRT, by Dennis L. Peery, pg 14-19

[Author:] Dennis L. Peery, pg 19

Low-Cost Data Base Management. It’s similar to IMAGE/3000, with enhancements for a flexible-disc-based system, by Michael V. Hetrick, pg 19-25. IMAGE/250.

[Author:] Michael [Mike] V. Hetrick, pg 25

Applications Software for the Small-Business Computer. Packages for order management and materials management are available. Financial management is under development, by Loyd V. Nelson, Scott W. Y. Wang, pg 25-28. HP 250, OM/250.

[Authors:] Scott W. Y. Wang, Loyd F. Nelson, pg 28

Capacitance and Conductance Deep-Level Transient Spectroscopy Using HP-IB Instruments and a Desktop Computer. A low-cost system of standard components is a useful engineering tool for checking new semiconductor processes and devices during their development, by Leonard Forbes, Ulrich Kaempf, pg 29-32. 4271B.

[Authors:] Ulrich Kaempf, Leonard [Len] Forbes, pg 32

May 1979 v.30 n.5

Cover: Model 8160A Pulse Generator and the Model 9835A/B Desktop Computer (also known as System 35 of the 9800 Series)

A Precision, Programmable Pulse Generator. This 50-MHz instrument shortens setup times either on the bench or in automatic systems by generating pulses so accurately there is no need to interrupt a test to monitor the pulse waveform and make corrections, by Peter Aue, Werner Huttemann, Lutz Kristen, pg 3-10. 8160A.

[Authors:] Lutz Kristen, Werner Huttemann, Peter Aue, pg 10

Extending Possibilities in Desktop Computing. This midrange computer’s large memory capacity, two languages (enhanced BASIC and assembly language), low radiated interference, and powerful input/output facilities suit it especially well for computation, control, and data acquisition applications, by Sandy L. Chumbley, pg 11-13. 9835A/B.

[Author:] Sandy L. Chumbley, pg 12

Processor Enhancements Expand Memory. A new NMOS LSI chip and larger memory chips extend memory capacity, by Damon R. Ujvarosy, Dyke T. Shaffer, pg 13-15. 9835A/B.

[Authors:] Damon R. Ujvarosy, Dyke T. Shaffer, pg 15

Designing to Meet Electromagnetic Interference Requirements. Eliminating electromagnetic pollution is assuming increasing importance around the world, by John C. Becker, pg 16-17

[Author:] John C. Becker, pg 17

Assembly Programming Capability in a Desktop Computer. Although efficient, assembly languages aren’t usually easy to use but this one is, by Robert M. Hallissy, pg 18-20. 9835A/B.

[Author:] Robert [Bob] M. Hallissy, pg 20

June 1979 v.30 n.6

Cover: HP 300 Computer

A Business Computer for the 1980s. A totally new business-oriented design based on HP’s silicon-on-sapphire integrated circuit technology, this new system packs a vast amount of processing power into a surprisingly small package, by George R. Clark, pg 3-6. HP 300.

[Author:] George R. Clark, pg 5

The Integrated Display System and Terminal Access Method. The HP 300 handles up to 16 application terminals simultaneously. Its own display can act like several mini-displays at once, by James R. Groff, Eric P. L. Ha, pg 6-9

Nowait Input/Output, pg 9

[Authors:] James [Jim] R. Groff, Eric P. L. Ha, pg 9

Reducing the Cost of Program Development. It’s a compiler-based system, so run-time efficiency is high, but it has many of the conveniences of an interpreter-based system, by Frederick W. Clegg, pg 9-15. HP 300.

[Author:] Frederick [Fred] W. Clegg, pg 15

Managing Data: HP 300 Files and Data Bases. Choose one of seven different file structures or the IMAGE data base management system, by James R. Groff, Phillip N. Taylor, Alan T. Pare, pg 16-19

[Authors:] Philip [Phil] N. Taylor, Alan T. Pare, pg 19

An Easy-to-Use Report Generation Language. Templates on the screen take the place of RPG coding sheets, by Tu-Ting Cheng, Wendy Peikes, pg 20-23. Report Program Generator.

[Authors:] Wendy Peikes, Tu-Ting Cheng, pg 23

HP 300 Business BASIC. It’s specially designed as a versatile business applications language, by May Y. Kovalick, pg 23-26

[Author:] May Y. Kovalick, pg 26

Innovative Package Design Enhances HP 300 Effectiveness. Monocoque construction is the starting point and even the shipping container is novel, by David A. Horine, pg 26-30

A Novel Shipping Container, pg 28. HP 300.

[Author:] David [Dave] A. Horine, pg 30

World-Wide Regulatory Compliance, by Ronald E. Morgan, pg 30. HP 300.

July 1979 v.30 n.7

Cover: HP 300 Computer

Cost-Effective Hardware for a Compact Integrated Business Computer. CMOS/SOS technology helps reduce an eight-board processor to only two boards. Advanced architecture supports the features the user sees, by Arndt B. Bergh, Kenyon C. Y. Mei, pg 3-8. HP 300.

[Authors:] Arndt [Arne] B. Bergh, Kenyon C. Y. Mei, pg 8

A Computer Input/Output System Based on the HP Interface Bus. It’s designed to make it easy to add, delete and communicate with peripheral devices, by W. Gordon Matheson, pg 9-13. HP 300.

A Small, Low-Cost 12-Megabyte Fixed Disc Drive. A new Winchester-type disc was designed to meet the mass memory needs of the HP 300, by Richard L. Smith, pg 11. HP 300.

[Author:] Richard [Rich] L. Smith, pg 11

[Author:] W. Gordon Matheson, pg 12

An Innovative Programming and Operating Console. Windows and softkeys add new facets to the classical concept of interactive programming, by Alfred F. Knoll, Norman D. Marschke, pg 13-17. HP 300.

[Authors:] Alfred [Al] F. Knoll, Norman [Norm] D. Marschke, pg 16

AMIGO/300: A Friendly Operating System. An improved man/machine interface sometimes called friendliness, requires an advanced operating system, by Ralph L. Carpenter, pg 17-24. HP 300.

Configuring and Launching the AMIGO/300 System. System generation and startup are easier than they used to be, by James C. McCullough, Donald M. Wise, pg 20-21. HP 300.

[Authors:] James [Jim] C. McCullough, Donald [Don] M. Wise, pg 21

[Author:] Ralph L. Carpenter, pg 24

A Multiple-Output Switching Power Supply for Computer Applications. Designed for computer mainframes, this OEM power supply is an economical solution for the HP 300’s power requirements, by Thane Kriegel, Dilip A. Amin, pg 25-28. 63312F.

[Authors:] Dilip A. Amin, Thane [Tim] Kriegel, pg 28

August 1979 v.30 n.8

Cover: 8566A Microwave Spectrum Analyzer

New Performance Standards in Microwave Spectrum Analysis. Low-level microwave signals not previously identifiable with spectrum analyzers can be measured up to 22 GHz with the aid of this new analyzer’s low phase noise, 10-Hz bandwidth, and high sensitivity, by Siegfried H. Linkwitz, pg 3-7. 8566A.

[Author:] Siegfried H. Linkwitz, pg 7

Broadband Input Mixers for a Microwave Spectrum Analyzer. Inputs from 100 Hz to 22 GHz required new developments in front-end design, by John C. Lamy, Frank K. David, pg 8-13. 8566A.

Precision Assembly of a YIG-Tuned Mixer, by Lee Olmstead, pg 10-11

[Authors:] John C. Lamy, Frank K. David, pg 13

A Synthesized Microwave Local Oscillator with Continuous-Sweep Capability. 10-Hz resolution at 22 GHz requires synthesizer stability in the local oscillator but it also has to sweep smoothly, by Stephen T. Sparks, Kenneth L. Lange, Larry R. Martin, pg 13-19. 8566A.

Some Microprocessor Contributions to Spectrum Analyzer Performance, by Michael S. Marzalek, pg 15

A Precision Discriminator with a Controllable Slope, by Stephen T. Sparks, pg 17-18

 

[Authors:] Stephen [Steve] T. Sparks, Larry R. Martin, Kenneth [Ken] L. Lange, Michael [Mike] S. Marzalek, pg 19

A Digital Pattern Generator for Functional Testing of Bus-Oriented Digital Systems. Simple interfacing enables this flexible pattern generator to drive digital buses or other multichannel logic systems for functional testing with long digital sequences, by Gunter Riebesell, Bernd Moravek, Ulrich Hubner, pg 20-25. 8170A.

[Authors:] Ulrich Hubner, Bernd Moravek, Gunter Riebesell, pg 24

An HP-IB Extender for Distributed Instrument Systems. This instrument eliminates the 20-metre distance restriction for HP-IB systems, enabling local and remote groups of instruments to operate together, usually with no extra programming. Modems or twin-pair cable provide the communications medium, by David H. Guest, pg 26-32. 37201A.

A Comprehensive Approach to Automatic Troubleshooting, by Peter Roubaud, pg 29

Applying the 37201A HP-IB Extender, by Simon Murray, pg 31

[Author:] David H. Guest, pg 32

September 1979 v.30 n.9

Cover: HP 3000 Computer System – the Series 33

SOS Technology Yields Low-Cost HP 3000 Computer System. The new Series 33 is software compatible with the Series II and Series III, HP’s most powerful computer system. Thanks to silicon-on-sapphire technology, its cost is surprisingly low for HP 3000 performance, by Richard C. Edwards, pg 3-8

Adapting the Multiprogramming Executive to a New Hardware Environment. The new low-cost SOS hardware runs the same operating system and application programs as other HP 3000s, by Claude Robinson, Jr., pg 7-8

[Author:] Claude [Chuck] Robinson, Jr., pg 7

[Author:] Richard [Rich] C. Edwards, pg 8

A Friendly, Easy-to-Service Computer. The quiet, desk-like HP 3000 Series 33 fits easily into the office environment, by Manmohan Kohli, Yas Matsui, pg 9-12

[Authors:] Manmohan [ Manny] Kohli, Yas Matsui, pg 12

A Remote Computer Troubleshooting Facility. Problems can be investigated before a service person is sent to the site, by David L. Nelson, pg 13-16. HP 3000 Series 33.

Philosophy of HP 3000 Series 33 Diagnostics. A combination of self tests, the remote facility, and off-line diagnostics reduce down time, by James H. Holl, pg 15-16

[Author:] James [Jim] H. Holl, pg 15

[Author:] David [Dave] L. Nelson, pg 16

Controlling Electromagnetic Interference Generated by a Computer System. The HP 3000 Series 33 meets worldwide regulator agency requirements, by Daniel T. Y. Wong, pg 17-19

[Author:] Daniel [Danny] T. Y. Wong, pg 19

Automated Pulmonary Function Measurements. Controlled by a “friendly” desktop computer, a completely integrated pulmonary lab automatically makes ventilation, distribution, and diffusion measurements, calculates results, compares them to predicted normals, and prints reports including labeled graphs, by John L. Fanton, Maurice R. Blais, pg 20-24. 47804A/S.

Assuring Proper Pulmonary Test Procedures, pg 21

The Need for Pulmonary Function Measurements, pg 23

[Authors:] John L. Fanton, Maurice R. Blais, pg 24

Triggered X-Y Oscilloscope Displays. Using the trigger circuits to turn on the CRT beam only during the time interval of interest provides timing information and also eliminates unimportant detail from Lissajous patterns traced on an oscilloscope, by P. Guy Howard, pg 25-28. 1741A.

Capturing Randomly Occurring Oscilloscope Traces, pg 27

[Author:] P. Guy Howard, pg 28

October 1979 v.30 n.10

Cover: Model 5036A Microprocessor Lab

Microprocessor Lab Teaches Operation and Troubleshooting. This entry level course for home study or the classroom includes a microcomputer in a briefcase and a 20-lesson textbook, by Barry Bronson, Michael Slater, pg 3-8. 5036A.

[Authors:] Barry Bronson, Michael Slater, pg 8

An Economical Network Analyzer for the 4-to-1300-MHz Range. This compact, moderately-priced instrument has a built-in sweeping source and a two-channel receiver that enables simultaneous swept measurements of magnitude ratio and phase angle as well as measurements of absolute power and reflection coefficient, by James R. Zellers, pg 9-17. 8754A.

[Author:] James [Jim] R. Zellers, pg 17

Expanding Logic Analyzer Capabilities by Means of the HP-IB. Augmenting the power of a logic state/timing analyzer with a desktop computer gives automated testing capability along with display in user-definable assembly language, by Robert G. Wickliff, Jr., Richard A. Nygoard, Jr., pg 18-22. 1610A, 1615A.

[Authors:] Richard [Rick] A. Nygaard, Jr., Robert [Bob] G. Wickliff, Jr., pg 22

A Serial Data Analyzer for Locating Faults in Decentralized Digital Systems. Interfaced to the RS-232C (V.24) data communications bus, this instrument can monitor data traffic on the bus to help identify an operational problem. It can then assume an active role and substitute for the CPU, a terminal, a peripheral, or a modem to help isolate the problem, by Robert E. Erdmann, Jr., pg 23-28. 1640A.

[Author:] Robert [Bob] E. Erdmann, Jr., pg 27

November 1979 v.30 n.11

Cover: Model 8901A Modulation Analyzer

Precise, Convenient Analysis of Modulated Signals. This new modulation analyzer measures a signal’s frequency, power and modulation components with unprecedented accuracy in many measurements. It adds up to a new concept in RF analyzers, by Allen P. Edwards, pg 3-18. 8901A.

Frequency Range? Which One? pg 5

IF Filters for the 8901A Modulation Analyzer. They are designed for minimum distortion of the modulation being measured, by Andrew H. Naegeli, pg 10-11

[Author:] Andrew [Andy] H. Naegeli, pg 11

A New Type of FM Demodulator. It’s inherently linear, yet doesn’t have a significant noise mechanism, by Russell B. Riley, pg 13

[Author:] Russell [Russ] B. Riley, pg 13

[Author:] Allen P. Edwards, pg 18

Modulation Analyzer Applications. Examples of formerly difficult problems that the modulation analyzer solves easily, by Allen P. Edwards, pg 19-21. 8901A.

Assuring Accuracy in Modulation Measurements. The modulation analyzer is so accurate that new modulation standards had to be built to calibrate it, by Leslie E. Brubaker, pg 22-26

[Author:] Leslie [Les] E. Brubaker, pg 26

Interactive Modulation Analyzer Control. A microcomputer makes complicated decisions so the users doesn’t have to, by Paul J. Lingane, pg 26-29

[Author:] Paul J. Lingane, pg 29

Special Signal Source Tests Modulation Analyzer. If it’s more accurate than any signal generator, how do you test it?, by Leslie E. Brubaker, pg 30-32. 8901A, 11715A.

December 1979 v.30 n.12

Cover: New 12050A Fiber Optic HP-IB Link

High-Speed Fiber Optic Link Provides Reliable Real-Time HP-IB Extension. Remote instruments and peripherals can now communicate on the HP Interface Bus with a computer/controller up to 100 metres away. This new fiber optic link is fast and has exceptional immunity to severe industrial environments, by Robert B. Grady, pg 3-9. 12050A.

A Ready-to-Use Fiber Optic Link for Data Communications. The fiber optic part of the new HP-IB extender is a standard HP product, by Delon C. Hanson, pg 5-6

[Author:] Delon [Del] C. Hanson, pg 5

[Author:] Robert [Bob] B. Grady, pg 9

A Picoammeter with Built-in, Synchronized Voltage Sources. This new digital picoammeter makes measurements of small current with a resolution of 10^-15 amperes, and it provides programmable voltage steps and measurement delays for automatic I-V measurements on semiconductors, insulation materials, capacitors, printed-circuit boards, and other components, by Hitoshi Noguchi, pg 10-19. 4140A.

Index: Volume 30 January 1979 through December 1979. PART 1: Chronological Index, pg 15-16. PART 2: Subject Index, pg 16-17. PART 3: Model Number Index, pg 18. PART 4: Author Index, pg 18.

[Author:] Hitoshi Noguchi, pg 19

Personal Calculator Has Key to Solve Any Equation f(x)=0. The HP-34C is the first handheld calculator to have a built-in numerical equation solver. That’s why one of its keys is labeled SOLVE, by William Kahan, pg 20-26

Why Is Equation Solving Provably Impossible? Pg 23

[Author:] William M. Kahan, pg 26

Viewpoints: Don Loughry on ANSI/IEEE Standard 488 and the HP Interface Bus, pg 27-28. HP-IB.

[Author:] Don Loughry, pg 28

Four Color Plotters Enhanced for Unattended Operation. A new automatic paper advance contributes to user convenience by advancing, cutting and stacking plots in selectable sizes, by Randy A. Coverstone, Majid Azmoon, Richard M. Kemplin, pg 29-32. 9872S, 7221S, 7220S.

[Authors:] Richard [Dick] M. Kemplin, Majid [Maj] Azmoon, Randy A. Coverstone, pg 32

January 1978 v.29 n.5

Cover: Model 2648A Graphics Terminal that has both graphics and alphanumeric capabilities

Versatile Low-Cost Graphics Terminal is Designed for Ease of Use. HP’s newest computer CRT terminal combines sophisticated graphics and alphanumeric capabilities with easy-to-use, system independent, automatic plotting, by Peter D. Dickinson, pg 2-6. 2648A.

[Author:] Peter D. Dickinson, pg 5

Raster Scan Graphics with Zoom and Pan, by Otakar Blazek, Michael B. Raynham, pg 6-12

Designing with 16K RAMs, pb 9

[Authors:] Michael [Mike] B. Raynham, Otakar [Oty] Blazek, pg 12

Firmware Control of a Microprocessor-Based Graphics Terminal, by John J. Moyer, pg 12-16. 2648A.

Graphics Self Test, pg 13

[Author:] John J. Moyer, pg 16

Add-On Digital Signal Processing Enhances the Performance of Network and Spectrum Analyzers. Digitizing and storing the outputs of network and spectrum analyzers enables flicker-free display of slowly swept measurements, corrections for system errors, and direct comparisons of device performance. Additions to the basic storage circuits achieve improved signal-to-noise ratios and increased resolution, by Jacob H. Egbert, Mark D. Roos, John T. Barr, Roger P. Oblad, pg 17-24. 8750A, 8501A.

Signal Averaging Enhances Network Analyzer Performance, pg 20

[Authors:] Jacob [Jake] H. Egbert, Roger P. Oblad, John T. Barr, pg 23

[Author:] Mark D. Roos, pg 24

February 1978 v.29 n.6

Cover: HP Model 1615A Logic Analyzer

A Logic State Analyzer for Evaluating Complex State Flow. Sequential triggering and selective trace are two of the capabilities that enable this 32-bit logic state analyzer to capture only the states of interest in complex program flow. It also counts states, and times their executive to help evaluate program performance, by George A. Haag, pg 2-10. 1610A.

[Author:] George A. Haag, pg 10

Viewpoints: Chuck House on the Ongoing Revolution in Digital Testing, pg 11-13

[Author:] Chuck House, pg 13

Interactive Logic State and Timing Analyses for Tracking Down Problems in Digital Systems. A new instrument combines 16-bit logic state analysis with 8-bit logic timing analysis to speed the location of problems involving asynchronous as well as synchronous events, by William D. Martin, John A. Scharrer, Robert G. Wickliff, Jr., pg 14-20. 1615A.

[Authors:] William [Bill] D. Martin, Robert [Bob] G. Wickliff, Jr., John A. Scharrer, pg 20

Entry Level Logic State Analyzer Has High-level Capability. Operable by a first-time user without any prior instruction, this compact, portable logic-state analyzer is also capable of sophisticated analyses of data flow. Moreover, it’s programmable, making possible low-cost, automatic systems for functional testing, by Charles T. Small, Alan J. DeVilbiss, pg 21-27. 1602A.

Untangling the Probing Problem, pg 22

[Authors:] Charles [Chuck] T. Small, Alan [Al] J. DeVilbiss, pg 27

Adapting the 1611A Logic State Analyzer to Work with the F8 Microprocessor Family. Microprocessors are not all alike. Adapting a dedicated instrument to test several different kinds of microprocessors poses some interesting challenges but also provides opportunities to broaden capability, by Deborah J. Ogden, pg 28-32. 1611A.

[Author:] Deborah [Debbie] J. Ogden, pg 31

March 1978 v.29 n.7

Cover: Our artist’s representation of a distributed computer system network made up of HP 3000 Series II, HP 1000, and HP 2026 Computer Systems

The Hewlett-Packard Distributed System Network. HP-DSN is a set of distributed systems products and a set of design objectives that provide a framework for interconnecting HP computer systems to form a network, by Andre O. Schwager, pg 2-6

[Author:] Andre O. Schwager, pg 5

Distributed Systems/3000. DS/3000 makes it possible for the user of an HP 3000 Computer System to communicate with remote HP 3000, HP 1000, and HP 2026 Computer Systems, by Philip M. Sakakihara, pg 7-14

[Author:] Philip [Phil] M. Sakakihara, pg 14

Distributed Systems/1000. DS/1000 makes it possible to interconnect HP 1000 Computer Systems in virtually any configuration to integrate instrumentation, computation, and operations management tasks, and to link these systems with HP 3000 Series II Systems for distributed data processing, by Robert R. Shatzer, pg 15-20

[Author:] Robert [Bob] R. Shatzer, pg 20

Data Entry and Communications Systems Have Network Capabilities. HP 2026 Systems are designed for high-performance data entry, local file inquiry and data communications with each other and the HP 3000, by David S. Kaplan, John R. Nielsen, pg 21-26

[Authors:] David S. Kaplan, John Richard [Rich] Nielsen, pg 25

Experimenting with Satellite-Linked Computer Networks. Project Prelude is an advanced computer communications experiment involving several companies, a satellite, and HP 3000 Series II Computer Systems, by Rita W. Williams, pg 27-32

[Author:] Rita W. Williams, pg 32

April 1978 v.29 n.8

Cover: Model 9845A Desktop Computer, also called, System 45

A Highly Integrated Desktop Computer System. System 45, the new flagship of the HP 9800 Series, gives the user unprecedented power in a single compact unit. It offers advanced capabilities in program documentation, string and matrix operations, subprograms, program linking, tracing, formatted output, mass storage and graphics, by Jack M. Walden, William D. Eads, pg 2-11

[Authors:] William [Bill] D. Eads, Jack M. Walden, pg 11

System 45 Hardware Design, by Louis T. Schulte, John C. Keith, Ansel K. Vogen, pg 11-21

System 45 Product Design, by Ray J. Cozzens, pg 14-15

System 45 Tape Control System, by Richard Kochis, pg 20

System 45 Power Supply, by Dick B. Barney, pg 21

[Authors:] Louis [Lou] T. Schulte, John C. Keith, Ansel [Andy] K. Vogen, pg 21

Advanced Thermal Page Printer Has High-Resolution Graphics Capability. This optional System 45 built-in peripheral quietly outputs program listings or hard copies of anything on the CRT display, by Ray J. Cozzens, pg 22-28. 9845A.

New Printhead Technology Developed for System 45, by Eugene R. Zeller, pg 25-26

[Authors:] Eugene [Gene] R. Zeller, Ray J. Cozzens, pg 28

Personal Calculator Algorithms IV: Logarithmic Functions. A detailed description of the algorithms used in HP’s hand-held calculators to computer logarithms, by William E. Egbert, pg 29-32

[Author:] William [Bill] E. Egbert, pg 32

May 1978 v.29 n.9

Cover: Model 5342A Microwave Frequency Counter

Microprocessor-Controlled Harmonic Heterodyne Microwave Counter Also Measures Amplitudes. The new harmonic heterodyne frequency measuring technique provides wide FM tolerance, high sensitivity and automatic amplitude discrimination. Simultaneous measurement of input amplitude is optional, by Ali Bologlu, Vernon A. Barber, pg 2-16. 5342A.

Down-Conversion Techniques for Microwave Frequency Measurements, pg 5

Signature Analysis in the 5342A, by Martin Neil, pg 8-9

A Technique that is Insensitive to FM for Determining Harmonic Number and Sideband, by Luiz Peregrino, pg 13-14

[Author:] Luiz Peregrino, pg 14

[Authors:] Ali Bologlu, Vernon [Al] A. Barber, pg 16

Generating High-Speed CRT Displays from Digital Data. A new graphics translator converts information received from a digital system by way of the HP interface bus into the analog signals needed for tracing vectors and characters on high-resolution CRT displays, by Kunio Hasebe, Arnot L. Ellsworth, pg 17-23. 1350A.

[Authors:] Kunio Hasebe, Arnot [Arnie] L. Ellsworth, pg 23

Laboratory Notebook: Swept-Frequency Measurements of High Levels of Attenuation at Microwave Frequencies, by Robert Jacobsen, pg 24

June 1978 v.29 n.10

Cover: Spectrum Analyzer

The Next Generation RF Spectrum Analyzer. Unprecedented tuning accuracy, frequency stability, and resolution – combined with a new level of control provided by three digital processors – raise to significantly new levels the art and science of spectrum analysis in the 100-Hz-to 1500-MHz range, by M. Dee Humpherys, Steven N. Holdaway, pg 2-8. 8568A.

A Precision, Digitally-Controlled Spectrum Analyzer for the 20-Hz-to-40-MHz Frequency Range, by Robert Temple, pg 6-7. 3585A.

[Author:] Robert [Bob] E. Temple, pg 6

[Authors:] Steven [Steve] N. Holdaway, M. Dee Humpherys, pg 7

Signal Processing in the Model 8568A Spectrum Analyzer, by Siegfried H. Linkwitz, Steven N. Holdaway, Michael J. Neering, David H. Molinari, pg 9-16

The Display System in the Model 8568A Spectrum Analyzer, by Michael J. Neering, Larry O. Bower, pg 11-12

[Author:] Larry O. Bower, pg 12

[Authors:] Siegfried Linkwitz, Michael [Mike] J. Neering, David [Dave] H. Molinari, pg 15

Developing the Digital Control System for the Model 8568A Spectrum Analyzer, by Lynn W. Wheelwright, Michael S. Marzalek, pg 16-20

Control of Model 8568A Spectrum Analyzer Through the HP Interface Bus, by Rex Bullinger, pg 18

[Author:] Rex A. Bullinger, pg 18

[Authors:] Michael [Mike] S. Marzalek, Lynn M. Wheelwright, pg 20

Designing Serviceability into the Model 8568A Spectrum Analyzer, by David D. Sharrit, pg 20-24

Computer-Based Production-Line Testing of the Model 8568A Spectrum Analyzer, by John Faick, pg 22-23

[Author:] John C. Faick, pg 23

[Author:] David [Dave] D. Sharrit, pg 24

July 1978 v.29 n.11

Cover: Model 2240A Measurement and Control Processor is designed to interface a computer to real-world sensors and controls

An Intelligent Peripheral for Measurement and Control. Communicating with the computer in a high-level language, this new computer front end independently executes analog and digital measurement and control tasks. It has a full complement of input/output interfaces and many built-in service facilities, by Ray H. Brubaker, Jr., pg 2-9. 2240A.

First HP Product to Use Silicon-on-Sapphire Technology, pg 5. 2240A.

Measurement and Control Processor Monitors HP Facility, by Robert B. Grady, pg 7-8

[Author:] Robert [Bob] B. Grady, pg 8

[Author:] Ray H. Brubaker, Jr., pg 9

Firmware Intelligence for Measurement and Control Processing. The HP 2240A demonstrates how HP-IB communications are maturing as instruments gain in sophistication, by Donald E. Klaiss, pg 10-18. 2240A.

Analog Input Card Calibration, by Vincent J. Dauciunas, pg 13

PHI, the HP-IB Interface Chip, by John W. Figueroa, pg 16-17

[Author:] John W. Figueroa, pg 17

[Authors:] Vincent [Vince] J. Dauciunas, Donald [Don] E. Klaiss, pg 18

An Easy-to-Use Data Capture Terminal for Industrial Operations. Designed for collecting data at remote points within a manufacturing operation, this compact terminal is operated easily by those unfamiliar with computer operations. It can also serve as a link between a computer and distant HP-IB-controlled instruments, by Daniel C. Berthier, Michel E. Bernard, Jacques A. Ripert, pg 19-24. 3070B.

A Multifunction Reader, pg 21

[Author:] Michel E. Bernard, pg 23

[Authors:] Jacques A. Ripert, Daniel C. Berthier, pg 24

August 1978 v.29 n.12

Cover: Model 5359A Time Synthesizer and Model 5370A Universal Time Interval Counter

Universal Counter Resolves Picoseconds in Time Interval Measurements. A new triggered phase-locked oscillator and a dual vernier interpolation scheme provide 20-picosecond resolution without averaging. Microprocessor architecture adds flexibility and processing power, by David C. Chu, Mark S. Allen, Allen S. Foster, pg 2-11. 5370A.

The Triggered Phase-Locked Oscillator, by David C. Chu, pg 8-9

See Also: Corrections: The last line on page 8 in the article “The Triggered Phase-Locked Oscillator” was omitted; the last line on page 4 in the article “Universal Counter Resolves Picoseconds in Time Interval Measurements” in the same issue is incorrect; text on page 16 in “Time Synthesizer Generates Precise Pulse Widths and Time Delays for Critical Timing Applications”, page 12 in the same issue, is incorrect, page 5 in the September 1978 issue

[Author:] David C. Chu, pg 10

[Authors:] Mark S. Allen, Allen S. Foster, pg 11

Time Synthesizer Generates Precise Pulse Widths and Time Delays for Critical Timing Applications. This time synthesizer’s extremely stable, low-jitter time delays may be synchronized precisely to an external trigger. Automatic calibration and HP-1B compatibility are standard features, by Leonard R. Dickstein, Keith M. Ferguson, pg 12-19. 5359A. See Also the Corrections section above.

Instrument Commonality, Reliability and Serviceability, by Leonard Dickstein, pg 19

[Authors:] Leonard R. Dickstein, Keith M. Ferguson, pg 19

Remotely-Controlled RF Switch for Multipoint Tests in Communication Systems. Under manual or HP-IB control, this RF switch provides access to any one of 10 inputs carrying signals in a range of 10 kHz to 25 MHz or, when cascaded with other switches, to any one of up to 1000 inputs, by Kevin J. Bradford, pg 20-22. 3754A, 3755A.

[Author:] Kevin J. Bradford, pg 22

Laboratory Notebook: A High-Level-Language Microprocessor Prototyping and Debugging System Using a Desktop Computer, by Allen Foster, Luiz Peregrino, pg 23-24

September 1978 v.29 n.13

Cover: Model 3582A Spectrum Analyzer

A High-Resolution, Low-Frequency Spectrum Analyzer. This dual-channel instrument uses digital computation with a microprocessor to make frequency-domain measurements in the 0-to-25.5-kHz range with bandwidths as narrow as 20 mHz, and do it hundreds of times faster than conventional swept-frequency analyzers. At the same time, a number of other important capabilities are obtained, by John S. Farnbach, Nixon A. Pendergrass, pg 2-13. 3582A.

Corrections: The last line on page 8 in the article “The Triggered Phase-Locked Oscillator”, page 2 in the August 1978 issue was omitted; the last line on page 4 in the article “Universal Counter Resolves Picoseconds in Time Interval Measurements” in the same issue is incorrect; text on page 16 in “Time Synthesizer Generates Precise Pulse Widths and Time Delays for Critical Timing Applications”, page 12 in the same issue, is incorrect, pg 5

The Fast Fourier Transform and the Model 3582A, pg 8

Window Functions for Spectrum Analysis, by Roger G. Cox, pg 10-11

[Author:] Roger G. Cox, pg 11

[Authors:] Nixon [Nick] Pendergrass, John S. Farnbach, pg 13

Hewlett-Packard FFT Analyzers, pg 13-14

Designing Programmable Digital Filters for LSI Implementation, by Lynn A. Schmidt, pg 15-23

What is a Digital Filter? pg 17-18

[Author:] Lynn A. Schmidt, pg 23

Desktop Plotter/Printer Does Both Vector Graphic Plotting and Fast Text Printing. This HP-IB desktop hardcopy unit has a bidirectional paper drive for long-axis plots and unattended plotting. It offers user unit scaling, graph rotation, printer capabilities, seven dashed-line fonts, English and European character sets, and user-definable characters, by Rick A. Warp, Majid Azmoon, Jaime H. Bohorquez, pg 24-30. 7245A.

Plotter/Printer Interface Languages: HP-GL and ASCII, by Michael P. Trego, pg 26

[Authors:] Majid  [Maj] Azmoon, Jaime [Jim] H. Bohorquez, pg 31

[Authors:] Rick A. Warp, Michael [Mick] P. Prego, pg 32

October 1978 v.29 n.14

Cover: An HP 1000 Model 45 Computer System displays its multilingual, multi-programming computing activity

Higher-Performance HP 1000 Computer Systems. The higher performance comes from new technologies, including new processors, faster 16K RAM semiconductor memories, and a new operating system, by Rodney K. Juncker, pg 2-5. Model 45, Model 40.

[Author:] Rodney [Rod] K. Juncker, pg 4

RTE-IV: The Megaword-Array Operating System, by Eugene J. Wong, C. Michael Manley, pg 6-11. Real-Time Executive, 92067A.

[Author:] C. Michael [Mike] Manley, Eugene J. Wong, pg 11

F-Series Extends Computing Power of HP 1000 Computer Family, by Julia A. Cates, pg 12-17

F-Series Rounding Techniques, pg 16

[Author:] Julia [Julie] A. Cates, pg 17

Microcoded Scientific Instruction Set Enhances Speed and Accuracy of F-Series Computers, by Charles R. Geber, pg 18-22. 1000 F-Series.

[Author:] Charles [Chuck] R. Geber, pg 22

New Memory Systems for HP 1000 Computers, by Alan H. Christensen, David C. Salomaki, pg 23-27

Achieving Reliability in Semiconductor Memory Systems, pg 26

[Authors:] Alan H. Christensen, David [Dave] C. Salomaki, pg 27

Multipoint Terminals for HP 1000 Systems, by Mitchell B. Bain, Gary Johnson, Denton B. Anderson, pg 28-32

[Authors:] Denton B. Anderson, Mitchell [Mitch] B. Bain, pg 31

[Author:] Gary W. Johnson, pg 32

November 1978 v.29 n.15

Cover: Print mechanisms that have a mechanical simplicity conducive to higher print speeds

Printer and Printing Terminal Gain Versatility and Mechanical Simplicity with Microprocessor Control. A 180-character-per-second-dot-matrix printing mechanism achieves high throughput by skipping over blanks and printing in either direction under microprocessor control. Versatility is enhanced with variable horizontal pitch, a full 128-USASCII-character set, and flexible interfacing, by Todd M. Woodcock, pg 2-7. 2631A, 2635A.

[Author:] Todd M. Woodcock, pg 7

Managing Dot-Matrix Printing with a Microprocessor, by John J. Ignoffo, Jr., Michael J. Sproviero, Phillip R. Luque, Kenneth A. Wade, pg 8-19. 2631A, 2631G, 2635A, 2639A.

Mechanical Design of a Durable Dot-Matrix Printer, by Robert Cort, pg 9

An Impact Graphics Printer, pg 11-12

Interfacing to a 180-Character/Second Printer/Terminal, by Gerard Carlson, Michael Lee, Roy Foote, pg 15-16

[Authors:] Kenneth [Ken] B. Wade, Phillip [Phil] R. Luque, Michael [Mike] J. Sproviero, John J. Ignoffo, Jr., pg 19

Versatile 400-lpm Line Printer with a Friction-Free Mechanism that Assures Long Life. This medium-speed line printer writes dot-matrix alphanumerics and graphics with a mechanism that has no sliding parts or bearing to wear out. It’s also versatile, with a capability for printing with a variety of character sets, by F. Duncan Terry, pg 20-22. 2608A.

[Author:] F. Duncan Terry, pg 22

Optimizing the Performance of an Electromechanical Print Mechanism, by Wallace T. Thrash, Everett M. Baily, William A. McIlvanie, Douglas B. Winterrowd, pg 23-32. 2608A.

Acoustic Design of the Model 2608A Line Printer, by Lynn Hessing, pg 24

Precise Paper Movement, by Robert Deely, Lynn Hessing, pg 26

Interface I/O for a 400-lpm Printer, by Stanley G. Peery, pg 30

[Authors:] Everett M. Baily, Douglas [Doug] B. Winterrowd, Wallace [Wally] T. Thrash, William [Bill] A. McIlvanie, pg 32

December 1978 v. 29 n.16

Cover: Model 9874A Digitizer transmits coordinate data to an on-line computer

Easy-to-Use, High-Resolution Digitizer Increases Operator Efficiency. This advanced new microprocessor-controlled digitizer provides an accurate, speedy, and convenient method for entering position information from maps, slides, x-rays, photographs, and other media into a computer for analysis, by Frank P. Carau, pg 2-13. 9874A.

Cursor Technology, by Henry T. Hetzel, pg 4. 9874A.

Glass Platen Technology, by Lawrence E. Brown, pg 8. 9874A.

Accuracy Testing, pg 11. 9874A.

[Author:] Lawrence [Larry] E. Brown, pg 12

[Authors:] Henry T. Hetzel, Frank P. Carau, pg 13

Included after page 13 and before page 19: Index to Volume 29 September 1977 through December 1978. There are no page numbers on the index itself. PART 1: Chronological Index. PART 2: Subject Index. PART 3: Model Number Index. PART 4: Author Index..

1-mHz-to-50-MHz Signal Source Combines Synthesizer Accuracy, Multimode Operation, and Easy Programming. Offering features not previously available in a single instrument, this new programmable signal source provides many kinds of test stimuli for either automatic or bench test applications, by Peter Brunner, Tilman Schad, Dieter Kible, pg 19-27. 8165A.

[Authors:] Tilman Schad, Dieter Kible, Peter Brunner, pg 27

A Compact Logging Multimeter that Can Manipulate Data. By combining the attributes of a 4 ½ -digit multimeter, a thermometer, a 4-channel scanner, a printer, and a microprocessor, this versatile instrument can be a time-saver for the design engineer, by Marsh L. Faber, John E. Scruggs, David L. Wolpert, pg 28-32. 3467A.

[Authors:] David [Dave] L. Wolpert, John E. Scruggs, Marshall [Marsh] L. Faber, Jr., pg 31

January 1977 v.28 n.5

Cover: A fetal monitor and a logic state analyzer for digital electronics

A Logic State Analyzer for Microprocessor Systems. A new logic state analyzer for debugging systems that use popular microprocessors has broadly expanded triggering capabilities plus keyboard control and mnemonic display that help solve problems more efficiently, by Jeffrey H. Smith, pg 2-11. 1611A.

[Author:] Jeffrey [Jeff] H. Smith, pg 11

Firmware for a Microprocessor Analyzer. By replacing hardware with firmware, the instrument designer can increase operator convenience and present data in a more meaningful form without increasing circuit complexity. Here is how this capability was applied to a logic state analyzer, by Thomas A. Saponas, pg 12-15. 1611A.

[Author:] Thomas [Tom] A. Saponas, pg 15

A Versatile, Semiautomatic Fetal Monitor for Non-Technical Users. A new monitoring instrument detects the heart beat of an unborn child by any one of four techniques. It does not required technically trained people to operate it, so the benefits of fetal monitoring now become available to a wider range of hospitals, by Heinz Sommer, Walter Ruchay, Peter Salfeld, Erich Courtin, pg 16-24. 8030A.

Fetal Monitoring – Towards Improved Management of Pregnancy and Delivery, pg 17

A Peak Pulse Detector, by Heinz Sommer, pg 19

An Elemental Cardiotocograph, pg 23

[Authors:] Erich Courtin, Heinz Sommer, Peter Salfeld, Walter Ruchay, pg 23

February 1977 v.28 n.6

Cover: Voltmeters

A Fast-Reading, High-Resolution Voltmeter that Calibrates Itself Automatically. Although it has 1-mV resolution and integrating capability – useful for high-accuracy measurements on the lab bench – this new voltmeter makes 24 readings/second working on the HP interface bus – a boon for systems users. Real-time autocalibration and the ability to perform calculations on its own readings contribute to its versatility, by Albert Gookin, pg 2-10. 3455A.

A Low-Cost, Programmable Data Logger, pg 4

A Faster Integrating Analog-to-Digital Converter, pg 9

[Author:] Albert [Al] Gookin, pg 10

A High-Speed System Voltmeter for Time-Related Measurements. Waveform characteristics as well as dc levels can be determined by this fast sample-and-hold voltmeter when teamed with a calculator or computer. Optimized for systems use, it has a programmable trigger delay that gives it unusual capabilities, by John E. McDermid, Joseph M. Gorin, James B. Vyduna, pg 11-19. 3437A.

A Programmable Data Acquisition System that also Analyzes, pg 14

[Authors:] John E. McDermid, James [Jim] B. Vyduna, Joseph [Joe] M. Gorin, pg 19

Contemporary Design Practice in General-Purpose Digital Multimeters. With lower cost and smaller size, digital multimeters are now found in a very broad range of applications. New approaches to design are required to meet the demands posed by this universality, by Roy D. Barker, Virgil L. Laing, Joe E. Marriott, H. Mac Juneau, pg 20-28. 3476A/B, 3435A.

An Economical 3 ½ -Digit Multimeter, pg 21. 3476A.

A Precision 3 ½ Digit Multimeter, pg 23. 3435A.

Extending the Ranges of a Digital Multimeter, pg 25

1-mV Resolution in a Low-Cost 4 ½ Digit Multimeter, pg 26. 3465A/B.

[Authors:] Roy D. Barker, Virgil L. Laing, pg 26

[Authors:] Joe E. Marriott, H. Mac Juneau, pg 27

March 1977 v.28 n.7

Cover: New HP 1000 Computer System

A New Series of Small Computer Systems. HP 1000 Systems are designed for high-performance applications in computation, instrumentation and operations management, by Lee Johnson, pg 2-6. Model 30/31, Model 80/81.

HP 1000 Computer System Applications, pg 5

[Author:] Lee Johnson, pg 6

HP 1000 Operating System is Enhanced Real-Time Executive. New RTE-II and RTE-III software provides for on-line system generation and switching, disc cartridge backup, disc and mini-cartridge distribution of software, new system string communication, and improved I/O error management, by Kathleen F. Hahn, David L. Snow, pg 7-14. 92001B, 92060B.

[Authors:] Kathleen [Kathy] F. Hahn, David [Dave] L. Snow, pg 14

Development and Application of Microprograms in a Real-Time Environment, by Harris Dean Drake, pg 15-17. 92061A.

[Author:] Harris [Dean] Dean Drake, pg 17

E-Series Doubles 21MX Performance. Faster logic, improvements to the architecture and firmware, and new microprogrammed features greatly increase performance without significantly increasing cost, by Cleaborn C. Riggins, pg 18-19. 21MX.

[Author:] Cleaborn C. Riggins, pg 19

How the E-Series Performance Was Attained, by Scott J. Stallard, pg 20-23. 21MX.

[Author:] Scott J. Stallard, pg 23

Microprogrammed Features of the 21MX E-Series, by Thomas A. Lane, pg 24-27

[Author:] Thomas [Tom] A. Lane, pg 27

OPNODE: Interactive Linear Circuit Design and Optimization. OPNODE is a powerful software package for computer-aided circuit design with an interactive graphics console in a minicomputer environment, by William A. Rytand, pg 28-31

[Author:] William [Bill] A. Rytland, pg 31

Viewpoints: John Moll on HP’s Integrated Circuit Technology, pg 32 (continued on page 17)

April 1977 v.28 n.8

Cover: HP’s new silicon-on-sapphire micro-CPU chip, MC²

Silicon-On-Sapphire Technology Produces High-Speed Single-Chip Processor. This new integrated-circuit processor is a static CMOS/SOS 16-bit parallel device. Its architecture is optimized for controller applications. Instruction execution times are 0.5 to 1.5 microseconds at an 8-MHz clock rate, by Bert E. Forbes, pg 2-8. MC².

CMOS/SOS, by David Farrington, pg 5

[Authors:] Bert E. Forbes, David Farrington, pg 8

Miniature Oscilloscope Probes for Measurements in Crowded Circuits. Resistive-divider probes only 2.4 mm (0.1) inch in diameter can access test points in densely populated circuits without shorting to adjacent leads. Grounding options preserve fast rise times, by Carolyn M. Finch, Marvin F. Estes, Lawrence A. Gammill, pg 9-12. 10017A, 10018A, 10040A, 10041A, 10042A, 10021A, 10022A, 10026A, 10027A.

[Authors:] Marvin [Marv] F. Estes, Lawrence [Larry] A. Gammill, Carolyn M. Finch, pg 12

A Small, Solid-State Alphanumeric Display. Serial loading and on-board storage of data on this dot-matrix display reduces the cost and complexity of supporting circuitry substantially. The 5 x 7 array of LEDs gives full alphanumeric capability (upper and lower case letters, numerals, special symbols), by Peter B. Ashkin, Jack L. Hines, John T. Uebbing, pg 13-20. HDSP-2000.

Generating Characters on a Dot-Matrix Display, pg 16-17

A Highly Tolerant Shift-Register Flip-Flop, pg 19

[Authors:] John J. Uebbing, Peter B. Ashkin, Jack L. Hines, pg 20

May 1977 v.28 n.9

Cover: 5004A Signature Analyzer, a troubleshooting tool for field repair of digital systems

Signature Analysis: A New Digital Field Service Method. In a digital instrument designed for troubleshooting by signature analysis, this method can find the components responsible for well over 99% of all failures, even intermittent ones, without removing circuit boards from the instrument, by Robert A. Frohwerk, pg 2-8. 5004A.

[Author:] Robert [Bob] A. Frohwerk, pg 8

Easy-to-Use Signature Analyzer Accurately Troubleshoots Complex Logic Circuits. It’s a new tool for field troubleshooting of logic circuits to the component level, by Anthony Y. Chan, pg 9-14. 5004A.

[Author:] Anthony [Tony] Y. Chan, pg 14

Signature Analysis – Concepts, Examples, and Guidelines. Guidelines for the designer are developed based on experience in attempting to retrofit existing products for signature analysis and the successful application of signature analysis in a new voltmeter, by Hans J. Nadig, pg 15-21

Designer Guidelines for Applying Signature Analysis to Microprocessor-Based Products, pg 18

[Author:] Hans J. Nadig, pg 21

Personal Calculator Algorithms I: Square Roots. A detailed description of the algorithm used in HP hand-held calculators to computer square roots, by William E. Egbert, pg 22-24

[Author:] William [Bill] E. Egbert, pg 24

June 1977 v.28 n.10

Cover: Technical developments described in this issue occupy widely spaced positions in the frequency spectrum (symbolized here by the visible spectrum) – at the low, low end, a dc power supply and power supply programmer, and at the high end, coaxial microwave accessories. But most of these devices share one common characteristic: they can be equipped to work on the HP interface bus.

A Wide-Ranging Power Supply of Compact Dimensions. Its output ranging from 0 to 50 volts and 0 to 10 amperes, this 200W, series-regulated, laboratory power supply spans a range that would normally require three power supplies and it can be programmed by way of the HP interface bus, by William T. Walker, John W. Hyde, Paul W. Bailey, pg 2-9. 6002A.

Remote Programming of Power Supplies Through the HP Interface Bus, by Kent Luehman, Emery Salesky, pg 6-7

[Author:] Paul W. Bailey, pg 8

[Authors:] John W. Hyde, Emery Salesky, Kent Lushman, William [Bill] T. Walker, pg 9

Coaxial Components and Accessories for Broadband Operation to 26.5 GHz. The new APC-3.5 coaxial connector makes it possible to design detectors, attenuators, sliding loads, and switches for broadband operation to 26.5 GHz, by Ronald E. Pratt, Donald R. Chambers, George R. Kirkpatrick, pg 10-16. 8473C, 33330C, 8495D/K, 33321D/K, 911C, 33311C.

[Authors:] George [Bob] R. Kirkpatrick, Ronald [Ron] E. Pratt, Donald [Don] R. Chambers, pg 15

Personal Calculator Algorithms II: Trigonometric Functions. A detailed explanation of the algorithms used by HP hand-held calculators to compute sine, cosine, and tangent, by William E. Egbert, pg 17-20

[Author:] William [Bill] Egbert, pg 20

July 1977 v.28 n.11

Cover: Model 2641 APL Display Station

Small Computer System Supports Large-Scale Multi-User APL. Powerful, interactive APL is now available for the multi-lingual HP 3000 Series II Computer System, by Kenneth A. Van Bree, pg 2-5. A Programming Language. APL\3000, 32105A, 2641A.

[Author:] Kenneth [Ken] A. Van Bree, pg 4

Introduction to APL, pg 4-5

APL Data: Virtual Workspaces and Shared Storage, by Grant J. Munsey, pg 6-10

See Also: Corrections: Figures 2 & 3 on pages 9-10 in “APL Data: Virtual Workspaces and Shared Storage”, are interchanged; a clarification of functions on pages 14 and 19 in the same article, page 22 in the August 1977 issue

[Author:] Grant J. Munsey, pg 10

APLGOL: Structured Programming Facilities for APL, by Ronald L. Johnston, pg 11-13

[Author:] Ronald [Ron] L. Johnston, pg 13

APL/3000 Summary, pg 14-16

A Dynamic Incremental Compiler for an Interpretive Language, by Eric J. Van Dyke, pg 17-23. APL.

A Controller for the Dynamic Compiler, by Kenneth A. Van Bree, pg 21

[Author:] Eric J. Van Dyke, pg 23

Extended Control Functions for Interactive Debugging, by Kenneth A. Van Bree, pg 23-24

CRT Terminal Provides both APL and ASCII Operation, by Warren W. Leong, pg 25-28. 2641A.

[Author:] Warren W. Leong, pg 28.

August 1977 v.28 n.12

Cover: Model 7920A Disc Drive which consists of two protect discs and three data discs and holds 50 megabytes of data

New 50-Megabyte Disc Drive: High Performance and Reliability from High-Technology Design. Achieving its high performance and large storage capacity required sophisticated design methods and tested the known limits of some manufacturing processes, by Herbert P. Stickel, pg 2-15. 7920A.

Head Alignment Disc Pack, by James Hood, pg 9

A Mechanical Vibrations Analogy for Servo System Design, by Joel Harrison, Lynn Weber, pg 13-14

[Author:] Herbert [Herb] P. Stickel, pg 15

An Individualized Pulse/Word Generator System for Subnanosecond Testing. A high-speed pulse/word generator is constructed in modular form so it can be configured according to specific testing requirements, by Volker Eberle, Christian Hentschel, Gunter Riebesell, Joel Zellmer, pg 16-24. 8080A, 8092A, 8084A.

[Authors:] Volker Eberle, Christian Hentschel, pg 22

Corrections: Figures 2 & 3 on pages 9-10 in “APL Data: Virtual Workspaces and Shared Storage”,  page 6 in the July 1977 issue, are interchanged; a clarification of functions on pages 14 and 19 in the same article, pg 22

[Authors:] Gunter Riebesell, Joel Zellman, pg 23

September 1977 v.29 n.1

Cover: Model 8772A X-Y Plotter

A New Family of Intelligent Multi-Color X-Y Plotters. These fast, precise, programmable plotters draw report quality four-color plots. Features include dashed-line fonts, several built-in character fonts, user-defined characters, and symbol plotting, by Lawrence G. Brunetti, pg 2-5. 9872A, 7221A.

[Author:] Lawrence [Larry] G. Brunetti, pg 5

Easy-to-Use Interface Language Controls HP-IB Plotter, by Thomas H. Daniels, Larry W. Hennessee, pg 5-9. 9872A.

[Author:] Larry W. Hennessee, Thomas [Tom] H. Daniels, pg 9

Remote Terminal Plotter Offers Simple Programming and Efficient Communications, by Marvin L. Patterson, David A. Bones, pg 9-13. 9872A, 7221A.

Programmable I/O Assures System Compatibility, by David A. Bones, pg 12

[Authors:] Marvin [Marv] L. Patterson, David [Dave] A. Bones, pg 13

Speed, Precision, and Smoothness Characterize Four-color Plotter Pen Drive System, by Richard M. Kemplin, Robert D. Haselby, Marvin L. Patterson, pg 13-18

[Authors:] Robert [Bob] d. Haselby, Richard [Dick] M. Kemplin, pg 18

Appendix: Correction of Non-Ideal Step Motor Behavior, by Marvin Patterson, pg 19

Pen and Ink System Helps Assure Four-color Plotter Line Quality, by Richard M. Kemplin, Larry W. Hennessee, Leonard P. Balazer, George W. Lynch, pg 20-25

Digitizing Sight Adds Versatility, by Leonard Balazer, pg 22

[Authors:] George W. Lynch, Leonard P. Balazer, pg 25

A Battery-Powered ECG Monitor for Emergency and Operating Room Environments. Electrical isolation, reduced susceptibility to RF and electrosurgery interference, and battery power equip this non-fade ECG monitor to operate in the electrically hostile environments found in emergency vehicles and operating rooms, by Ronald D. Gatzke, Sherry R. Grobstein, pg 26-32. 78333A.

Safety Problems in Battery-Powered Instruments, pg 27

Electrosurgery Interference, by Sherry R. Grobstein, pg 28

[Author:] Sherry R. Grobstein, pg 31

[Author:] Ronald [Ron] D. Gatzke, pg 32

October 1977 v.29 n.2

Cover: Model 5420A Digital Signal Analyzer

Advanced Digital Signal Analyzer Probes Low-Frequency Signals with Ease and Precision. Significant new features include absolute internal calibration in the user’s choice of engineering units, digital band selectable or ‘zoom’ analysis, fully annotated dual-trace CRT display with X and Y axis cursors, digital storage of data and measurement setups on a tape cartridge and a random noise source to provide test stimulus, by H. Webber McKinney, Richard H. Grote, pg 2-8. 5420A.

The Module I/O Bus (MIOB), by David C. Synder, pg 6

[Authors:] Richard [Dick] H. Grote, H. Webber [Webb] McKinney, pg 8

Front End Design for Digital Signal Analysis, by Jean-Pierre Patkay, Frank R.F. Chu, Hans A. M. Wiggers, pg 9-14. 5420A.

[Authors:] Hans Am M. Wiggers, Jean-Pierre [Pierre] D. Patkay, Frank Rui-Feng Chu, pg 13

Display and Storage Systems for a Digital Signal Analyzer, by Walter M. Edgerley, Jr., David C. Snyder, pg 14-17. 5420A.

Included between pages 14 & 15: Index to Volumes 25, 26, 27, 28. September 1973 through August 1977. PART 1: Chronological Index. PART 2: Subject Index. PART 3: Model Number Index. PART 4: Author Index. The index is 12 pages; no page numbers are given to the index itself.

[Authors:] Walter [Walt] M. Edgerley, Jr., David [Dave] C. Snyder, pg 16

Digital Signal Analyzer Applications. Analyses of two actual systems, one electrical and one mechanical, show what the analyzer can do, by Terry L. Donahue, Joseph P. Oliverio, pg 17-21. 5420A.

[Authors:] Joseph [Joe] P. Oliverio, Terry L. Donahue, pg 21

Printing Financial Calculator Sets New Standards for Accuracy and Capability. This briefcase-portable calculator has several new functions and is exceptionally easy to use. Most important, the user need not be concerned about questions of accuracy or operating limits, by Roy E. Martin, pg 22-28. HP-92.

[Author:] Roy E. Martin, pg 28.

November 1977 v.29 n.3

Cover: Model 8672A Synthesized Signal Generator

Expanding Synthesized Signal Generation to the Microwave Range. Here are two broadband, programmable, high-spectral-purity microwave signal sources, a 2-to-18 GHz synthesized signal generator and a 2-6.2 GHz synthesizer. Both are single compact,13-cm high instruments, by James L. Thomason, pg 2-7. 8671A, 8672A.

Applications of a Microwave Synthesized Signal Generator, pg 4

A Fast 2-18 GHz Pulse Modulator, by Ronald Larson, pg 6. 11720A.

[Author:] James [Jim] L. Thomason, pg 7

Frequency Synthesis in a Microwave Signal Generator, by Kenneth L. Astrof, pg 8-15

An Improved 2-to-6.2-GHz YIG-Tuned Oscillator, by G. Basawapatna, J. Nidecker, pg 12

Dealing with Microphonic Sidebands, by Carl Enlow, pg 14-15

[Author:] Kenneth [Ken] L. Astrof, pg 15

Signal Generator Features for a Microwave Synthesizer, by Bradley C. Stribling, pg 15-21

A High-Performance Microwave Power Leveling Loop, by Stephen Sparks, pg 17-18

A Calibrated 50-Hz-to-10-MHz FM System, by Robert Dildine, Ronald Larson, pg 20-21

[Author:] Bradley [Brad] C. Stribling, pg 21

Personal Calculator Algorithms III: Inverse Trigonometric Functions. A detailed description of the algorithms used in Hewlett-Packard hand-held calculators to compute arc since, arc cosine, and arc tangent, by William E. Egbert, pg 22-23

Viewpoints: Tom Hornak on Fiber-Optic Communications, pg 24-25 (continued on back page)

An NMOS Process for High-Performance LSI Circuits. Fast 16-bit microprocessors, 16K read-only memories, and a variety of special-purpose random-logic chips are the result of an NMOS process that produces high-performance large-scale integrated circuits, by Joseph E. Deweese, Thomas R. Ligon, pg 26-32

Applications of the NMOS-II Process, pg 30-31

[Authors:] Joseph [Joe] E. DeWeese, Thomas [Tom] R. Ligon, pg 31

[Author:] Tom Hornak, pg 32

December 1977 v.29 n.4

Cover: The multifaceted HP-01 Wrist Instrument

Wrist Instrument Opens New Dimension in Personal Information. It’s a digital electronic wristwatch, a personal calculator, an alarm clock, a stopwatch, a timer, and a 200-year calendar, and its functions can interact to produce previously unavailable results, by Andre F. Marion, Edward A. Heinsen, Robert Chin, Bennie E. Helmso, pg 2-10. HP-01.

[Authors:] Edward [Ed] A. Heinsen, Bennie [Ben] E. Helmso, Andre F. Marion, Robert [Bob] Chin, pg 10

Higher Precision in Oscilloscope Measurements of Very Short Time Intervals. Incorporating electronic counter circuits in a delta-time oscilloscope enables 100-ps resolution in measurements of clock phasing, propagation delay and other digital system timing parameters, by Ronald C. Westlund, pg 11-17. 1743A.

On Delta-Time Measurements, pg 16

[Author:] Ronald [Ron] C. Westlund, pg 17

A Wide-Ranging, Automatic LCR Meter for Stand-Alone or Systems Applications. Microprocessor control broadens the capabilities of this speedy LCR meter and makes it readily adaptable to BCD or HP-IB automatic systems, by Masahiro Yokokawa, Keiki Kanafuji, pg 18-24. 4262A.

[Authors:] Masahiro Yokokawa, Keiki Kanafuji, pg 24

January 1976 v.27 n.5

Cover: Microprocessor Control

An Automatic Selective Level Measuring Set for Multichannel Communications Systems. Combining microprocessor control with meticulous receiver and synthesizer design results in a powerful new tool for the installation, maintenance, and surveillance of frequency-division multiplexed communications systems, by J. Reid Urquhart, pg 2-7. 3745A, 3745B.

Operating a Selective Level Measuring Set through a Keyboard, pg 4

[Author:] J. Reid Urquhart, pg 7

Designing Precision into a Selective Level Measuring Set, by Hugh P. Walker, pg 8-12

Spurious Responses That Can Perturb a Measurement, pg 12

[Author:] Hugh P. Walker, pg 12

Designing a Quiet Frequency Synthesizer for a Selective Level Measuring Set, by John H. Coster, pg 13-15

[Author:] John H. Coster, pg 15

Making the Most of Microprocessor Control, by David G. Dack, pg 16-18

[Author:] David G. Dack, pg 18

Real-Time Multi-User BASIC. Easy-to-learn, interactive BASIC is now available as a programming language for HP computer systems operating under the real-time executive operating systems, RTE-II and RTE-III, by James T. Schultz, pg 19-24

[Author:] James [Jim] T. Schultz, pg 24

February 1976 v.27 n.6

Cover: A sculptural representation of the 5501A Laser Transducer System for machine-tool positioning

Laser Transducer Systems for High-Accuracy Machine Positioning. These reliable, modular systems consist of an HP two-frequency laser head and interferometric optics designed for permanent installation on a machine tool or measuring machine, and a selection of interface electronics to couple the laser to a computer, calculator or numerical controller, by Andre F. Rude, Michael J. Ward, pg 2-6. 5501A.

Appendix: Some Things to Keep in Mind When Configuring a Laser System, pg 6

Electronics for the Laser Transducer. The emphasis is on flexibility and completeness, making the system adaptable to virtually any combination of controller and machine, by William E. Olson, Robert B. Smith, pg 7-18. 5501A.

A Numeric Display Module, by Ronald C. Jensen, pg 10

System Example: Calculator/Laser Controlled Measuring Machine, pg 17

[Authors:] Andre F. Rude, Robert [Bob] B. Smith, William [Bill] E. Olson, Michael [Mike] J. Ward, pg 18

Using a Programmable Calculator as a Data Communications Terminal. A discussion of the data communications capabilities of the HP 9830A Calculator, with examples of real-life applications, by James E. Carlson, Ronald L. Stickle, pg 19-24

[Authors:] Ronald [Ron] L. Stickle, James [Jim] E. Carlson, pg 24

March 1976 v.27 n.7

Cover: The new rugged Model 5062C Cesium Beam Frequency Reference and the new 15-centimeter cesium beam tube that makes it possible

A Cesium Beam Frequency Reference for Severe Environments. Systems operating in demanding environments, including airborne, marine and land mobile, can now benefit from the accuracy and stability of the cesium atom as a time and frequency reference, by Charles E. Heger, Ronald C. Hyatt, Gary A. Seavey, pg 2-10. 5062C.

[Authors:] Charles [Chuck] E. Heger, Gary A. Seavey, Ronald [Ron] C. Hyatt, pg 10

Calibrated FM, Crystal Stability, and Counter Resolution for a Low-Cost Signal Generator. A new synchronizer/counter boosts the frequency stability and resolution of HP’s low-cost 520-MHz signal generator, which is now available in a new calibrated-FM version, Model 8654B, as well as the original Model 8654A, by Robert R. Collison, Ronald E. Kmetovicz, pg 11-17. 8655A.

[Authors:] Robert [Bob] R. Collison, Ronald [Ron] E. Kmetovicz, pg 17

A 50-Mbit/s Pattern Generator and Error Detector for Evaluating Digital Communications System Performance. To simplify measurements in PCM system, this new all-in-one instrument has fixed clock rates and a choice of interface levels. Besides measuring bit-error rate, it can also estimate coding errors and measuring clock-frequency offset, by Ivan R. Young, Robert Pearson, Peter M. Scott, pg 18-24. 3780A.

[Authors:] Ivan R. Young, Robert [Bob] Pearson, Peter M. Scott, pg 24

April 1976 v.27 n.8

Cover: Model 3810A Total Station gives the operator a direct readout of distance to a pole-mounted retroreflector held by his rod man

Electronic Total Station Speeds Survey Operations. This new electronic surveying instrument measures slope distance and zenith angle simultaneously, then computes and displays horizontal or vertical distance in feet or metres. Its base measures horizontal angle, by Michael L. Bullock, Richard E. Warren, pg 2-12. 3801A.

Angle Transducer, pg 10

[Authors:] Michael [Mike} L. Bullock, Richard [Rick] E. Warren, pg 12

Designing Efficiency into a Digital Processor for an Analytical Instrument. Hardware control of the I/O system eliminates excessive overhead in the architecture of a digital processor used in a gas chromatograph, leading to significant improvements in operating convenience, by John S. Poole, Len Bilen, pg 13-20. 5840A.

[Authors:] Len Bilen, John S. Poole, pg 20

May 1976 v.27 n.9

Cover: Model 2644A Terminal is a microprocessor-controlled CRT terminal that has two built-in magnetic tape units for mass data storage

New CRT Terminal Has Magnetic Tape Storage for Expanded Capability. Two built-in tape drives make the terminal a stand-alone data station. User benefits are reduced on-line time costs, lover line charges in remote operations, and greatly lessened demand on computer resources, by Robert G. Nordman, Richard L. Smith, Louis A. Witkin, pg 2-15. 2644A.

Mini Data Cartridge: A Convincing Alternative for Low-Cost, Removable Storage, by Alan J. Richards, pg 6-7

Mini-Cartridge Drive Mechanism, pg 12-13

[Authors:] Richard [Rich] L. Smith, Alan J. Richards, Louis [Lou] A. Witkin, Robert [Bob] G. Nordman, pg 14

Laboratory Notebook: A Logarithmic Counter, by David Arnold, pg 16-15 [sic]

June 1976 v.27 n.10

Cover: 9825A Calculator with its high-performance NMOS LSI processor and the powerful system-controller capabilities

Third Generation Programmable Calculator Has Computer-Like Capabilities. A new programming language, HPL, helps the user apply the many technological advances in this personal computing machine to a wide variety of computation and control problems, by Donald E. Morris, Chris J. Christopher, Geoffrey W. Chance, Dick B. Barney, pg 2-14. 9825A.

9825A Product Design, pg 5

9825A Cartridge Tape Unit, pg 13

[Authors:] Geoffrey [Geoff] W. Chance, Donald [Don] E. Morris, Dick B. Barney, Chris J. Christopher, pg 14

High-Performance NMOS LSI Processor, by William Eads, David S. Maitland, pg 15-18. 9825A.

Processor Tester. An Application of the 9825A Calculator, pg 18

[Authors:] David [Dave] S. Maitland, William [Bill] D. Eads, pg 18

Character Impact Printer Offers Maximum Printing Flexibility. This new printer is fast and reliable, and has features previously unavailable in a calculator peripheral, including programmable horizontal and vertical tabulation, variable character spacing, and plotting ability, by Robert B. Bump, Gary R. Paulson, pg 19-23. 9871A.

[Authors:] Robert [Bob] B. Bump, Gary R. Paulson, pg 23

Mid-Range Calculator Delivers More Power at Lower Cost. Its design takes advantage of the latest technology, principally a single-chip microprocessor, by Douglas Clifford, F. Timothy Hickenlooper, A. Craig Mortensen, pg 24-32. 9825A, 9815A.

[Author:] Douglas [Doug] M. Clifford, pg 30

[Authors:] A. Craig Mortensen, F. Timothy [Tim] Hickenlooper, pg 31

July 1976 v.27 n.11

Cover: Model 8505A Network Analyzer

A Direct-Reading Network Analyzer for the 500-kHz-to-1.3-GHz Frequency Range. Beside measurements of gain, loss, phase shift and reflection coefficient, this new all-in-one measuring set makes direct measurements of equivalent electrical length, group delay, and deviation from linear phase shift, by Hugo Vifian, pg 2-6. 8505A.

[Author:] Hugo Vifian, pg 6

Measuring A Linearly Changing Frequency, by Frederick Woodhull, pg 6

A Family of Test Sets for the 500 kHz-1.3 GHz Range, by Julius Botka, pg 7

Processing Wide-Range Network Analyzer Signals for Analog and Digital Display, by William S. Lawson, David D. Sharrit, pg 8-11

A Wide-Range, Continuously-Variable Line Stretcher, by William Lawson, pg 9

A Wide-Range, High-Resolution Group Delay Detector, by David Sharrit, pg 11

[Authors:] William [Bill] S. Lawson, David [Dave] D. Sharrit, pg 11

A Precision RF Source and Down-Converter for the Model 8505A Network Analyzer, by Rolf Dalichow, Daniel R. Harkins, pg 12-16

Well-Matched Down-Converters, by Wayne Frederick, pg 13

Generating Well-Isolated Tracking Source Signals, by Mark Roos, Phillip Chen, pg 15

[Authors:] Rolf Dalichow, Daniel [Dan] R. Harkins, pg 16

August 1976 v.27 n.12

Cover: Against a backdrop photo of an HP 3000 series II Computer System are a Series II Memory board and an example of an Error Correcting Memory Log Analysis

Series II General-Purpose Computer Systems: Designed for Improved Throughput and Reliability. A larger, faster memory system with error correction and error logging, a faster central processor, an expanded instruction set, and a more efficient operating system are the major technological advances. Benchmark studies rate the new HP 3000 Series II Computer System at two to four times the throughput of earlier versions, by Leonard E. Shar, pg 2-7. Model 5, Model 7, Model 9.

An All-Semiconductor Memory with Fault Detection, Correction, and Logging, by Elio A. Toschi, Tak Watanabe, pg 8-13. 3000 Series.

[Authors:] Leonard [Len] E. Shar, Tak Watanabe, Elio A. Toschi, pg 13

HP 3000 Series II Performance Measurement, by Clifford A. Jager, pg 14-16

[Author:] Clifford [Cliff] A. Jager, pg 16

September 1976 v.28. n.1

Cover: HP Model 1741A variable persistence/storage scope

An Easier-to-Use Variable-Persistence/Storage Oscilloscope with Brighter, Sharper Traces. Revising the control arrangement and operating modes of a variable persistence oscilloscope results in a more “friendly” instrument that also has improved display characteristics, by Van Harrison, pg 2-8. 1741A.

A Brighter, More Sharply Focused Variable Persistence/Storage Cathode-Ray Tube, by Robert Wickliff, Jr., pg 6

[Author:] Van Harrison, pg 8

An Automatic Wide-Range Digital LCR Meter. Easy operation, a wide measurement range, two measurement frequencies, high reliability, optional HP-IB compatibility, and low cost make it suitable for a wide range of component and impedance measurements, by Satoru Hashimoto, Toshio Tamamura, pg 9-16. 4261A.

See Also: Correction: To figure 4 in the article “An Automatic Wide-Range Digital LCR Meter”, page 9 in the October 1976 issue

[Authors:] Satoru Hashimoto, Toshio Tamamura, pg 15

October 1976 v.28 n.2

Cover: New Oximeter. 47201A.

Continuous, Non-Invasive Measurements of Arterial Blood Oxygen Levels. A new oximeter gives calibrated non-invasive measurements of the oxygen saturation of hemoglobin in arterial blood, using a multiwavelength optical technique that approaches “touch-and-read” convenience, by Edwin Merrick, Thomas Hayes, pg 2-9. 47201A.

See Also: Corrections: To an incomplete reference on page 9 in the article “Continuous, Non-Invasive Measurements of Arterial Blood Oxygen Levels, page 20 in the December 1976 issue. Also,  to an equation on page 5 in the same article, also on page 20 in the December 1976 issue.

Oximeter Theory, pg 5

[Authors:] Edwin [Ed] B. Merrick, Tom Hayes, pg 9

Correction: To figure 4 in the article “An Automatic Wide-Range Digital LCR Meter”, page 9 in the September 1976 issue, pg 9

Laboratory Notebook: A Signal-Level Reference, by J. Reid Urquhart, pg 10

Laboratory Notebook: An Accurate, Low-Noise Discriminator, by Gerald Ainsworth, Richard Pope, pg 10

Card-Programmable Digital IC Tester Simplifies Incoming Inspection. It’s inexpensive, easy to set up to test a wide variety of digital IC’s and easy to operate. Interfaces for many automatic IC handlers are available, by Eric M. Ingman, pg 11-18. 5045A.

[Author:] Eric M. Ingman, pg 18

Some Economic Considerations of IC Testing, by Mark Baker, pg 18-19

November 1976 v.28 n.3

Cover: The HP-97 and the HP-67 are fully programmable portable calculators that can run each other’s programs

A Pair of Program-Compatible Personal Programmable Calculators. One is a small, portable printing calculator and the other is a hand-held version without a printer. Both versions feature a “smart” magnetic card reader, and each can run the other’s programs, by Peter D. Dickinson, William E. Egbert, pg 2-8. HP-97, HP-67.

[Authors:] Peter D. Dickinson, William [Bill] E. Egbert, pg 8

Portable Scientific Calculator Has Built-In Printer. It’s the first of a new generation of small, portable, printing calculators that operate on rechargeable batteries or line current, by Bernard E. Musch, Robert B. Taggart, pg 9-16. HP-91.

See Also: Corrections: To a typographical error in the equation on page 10 in the article “Portable Scientific Calculator Has Built-In Printer”,  in the December 1976 issue, pg 20

Printing on the HP-97, by William E. Egbert, pg 10

The New Accuracy: Making 2³ = 8*, by Dennis W. Harms, pg 16-17

[Author:] Dennis W. Harms, pg 17

[Authors:] Bernard [Bernie] E. Musch, Robert [Bob] B. Taggart, pg 18

High-Power Solid-State 5.9-12.4-GHz Sweepers. Two new RF plug-ins for the 8620C Sweep Oscillator produce more than 50

mW of output power, thanks to a new gallium arsenide field-effect transistor, by Louis J. Kuhlman, Jr., pg 19-22

A 5.9-12.4-GHz GaAs FET Power Amplifier, pg 20

The GaAs FET in Microwave Instrumentation, by Patrick H. Wang, pg 22-23

New Low-Noise GaAs FET Chip has 25-Milliwatt Output at 10 GHz, pg 23

[Authors:] Patrick [Pat] H. Wang, Louis [Jack] J. Kuhlman, Jr., pg 24

December 1976 v.28 n.4

Cover: Model 547A Current Tracer reveals the presence and relative size of current steps by the brightness of its built-in lamp while Model 546A Logic Pulser supplies the needed stimulus current if it isn’t already present in the system under test

Current Tracer: A New Way to Find Low-Impedance Logic-Circuit Faults. By tracing current pulses, this sensitive probe helps locate solder bridges, shorted conductors in cables, shorts in voltage distribution networks, shorted IC inputs and dead or stuck outputs, stuck wired-AND circuits, and stuck data buses, by John Beckwith, pg 2-8. 547A.

[Author:] John F. Beckwith, pg 8

New Logic Probe Troubleshoots Many Logic Families. The probe’s single lamp indicator displays high or low logic levels, bad levels, and open circuits on digital circuit nodes. Testable logic families include TTL, DTL, CMOS, HTL, HNIL and MOS, by Robert Quenelle, pg 9-11. 545A.

A Smart Probe-Test System, by Barry Bronson, pg 10

[Author:] Robert [Bob] C. Quenelle, pg 11

A Multifunction, Multifamily Logic Pulser. This microprogrammed pulse generator in a probe can produce single pulses, pulse bursts, or pulse streams. Its output state automatically adjusts for the type of logic being simulated, by Barry Bronson, Anthony Chan, pg 12-15. 546A.

[Authors:] Anthony [Tony] Y. Chan, Barry Bronson, pg 15

Probe Family Packaging, by David E. Gordon, pg 16-17

[Author:] David [Dave] E. Gordon, pg 17

Multifamily Logic Clip Shows All Pin States Simultaneously. This new logic clip works with virtually all logic families from ECL to 18V CMOS. Loading of the circuit under test is minimal. The clip is protected by overloads to 30V, by Durward Priebe, pg 18-20. 548A.

[Author:]  Durward Priebe, pg 20

Corrections:

To a typographical error in the equation on page 10 in the article “Portable Scientific Calculator Has Built-In Printer”,  in the November 1976 issue, pg 20

Also,  to an incomplete reference on page 9 in the article “Continuous, Non-Invasive Measurements of Arterial Blood Oxygen Levels in the October 1976 issue. Also,  to an equation on page 5 in the same article, pg 20

Interfacing a Parallel-Mode Logic State Analyzer to Serial Data. A new serial-to-parallel converter enables a parallel-mode logic state analyzer to work with serial data so the analyzer’s tabular display and versatile triggering can be used for tracing data flow in serial data systems, by Justin S. Morrill, Jr., pg 21-24. 10254A.

[Author:] Justin S. Morrill, Jr., pg 24

January 1975 v.26 n.5

Cover: HP Product Manager, Jane Evans, with the HP Interface Bus

The Hewlett-Packard Interface Bus: Current Perspectives. First announced over two years ago, the Hewlett-Packard Interface Bus has undergone refinements that make it suitable as a model for a proposed international standard, by Donald C. Loughry, pg 2-4

The HP Interface Bus, pg 3

HP Interface Bus Specification Summary, pg 4

Putting Together Instrumentation Systems at Minimum Cost. Instrumentation systems that do useful work can be assembled around the HP Interface Bus at costs in the $15k to $25k range. Here is an approach to assembling such systems with a minimum amount of engineering time, by David W. Ricci, Peter S. Stone, pg 5-11

Recreatable automatic Systems for the Lab, pg 6

Developing a One-of-a-Kind Automatic Test System, pg 9

Packaged Calculator-Based Measurement Systems, pg 11

Filling in the Gaps–Modular Accessories for Instrument Systems. These programmable modules provide such accessory functions as remote display, switching, digital-to-analog conversion, and measurement pacing and timing. They are useful both with single instruments and as components of automated systems, by Charles R. Trimble, Steven E. Schultz, pg 12-18. 59301A, 59303A, 59304A, 59306A, 59307A, 59308A, 59309A, 59300 Series, 5312A, 5150A.

A Quiet, HP-IB-Compatible Printer that Listens to both ASCII and BCD, by Hans-Jurg Nadig, pg 14-15

A Multifunction Scanner for Calculator-Based Data Acquisition Systems, by David L. Wolpert, pg 17

Instruments for Use in HP Interface Bus Connected Systems, pg 17

Minimal Cost Measuring Instruments for Systems Use, by Lawrence P. Johnson, Gary D. Sasaki, pg 18

Visualizing Interface Bus Activity. Connecting to the HP Interface Bus, a new analyzer listens to and displays the status of all bus lines for easy study of bus activity. It also serves as a talker, using programs in its internal memory to exercise bus-compatible instruments and systems, by Harold E. Dietrich, pg 19-23. 59401A.

[Authors:] Donald [Don] C. Loughry, David [Dave] W. Ricci, Peter [Pete] S. Stone, Steven [Steve] E. Schultz, Charles [Charlie] R. Trimble, Hans-Jurg [Hans] Nadig, pg 23

[Authors:] Harold [Harry] E. Dietrich, David [Dave] L. Wolpert, Gary D. Sasaki, Lawrence [Larry] P. Johnson, pg 24

February 1975 v.26 n.6

Cover: Two-bridge measurement that’s easy for the 7047A X-Y Recorder

High-Sensitivity X-Y Recorder Has Few Input Restrictions. To match its high sensitivity, this new recorder provides 130 dB of common-mode rejection for virtually any input configuration. No external “guard” connection is needed unless the common-mode voltage exceeds ten volts peak, by Daniel E. Johnson, John M. Wade, Donald W. Huff, pg 2-9. 7047A X-Y.

Appendix I: Analytical Expressions for common-Mode Rejection Ratio and Noise Pump-Out Current, pg 8

Appendix II: Effects of Amplifier Offsets, pg 9

[Authors:] John M. Wade, Donald [Don] W. Huff, Daniel [Dan] E. Johnson, pg 9

Digital High-Capacitance Measurements to One Farad. Here’s a new high-C meter capable of measuring today’s wide-value electrolytic and tantalum capacitors. It’s for production testing, incoming inspection and the laboratory, by Kunihisa Osada, Jun-ichi Suehiro, pg 10-16. 4828A.

[Authors:] Kunihisa Osada, Jun-ichi Suehiro, pg 15

Computer Performance Improvement by Measurement and Microprogramming. The speed of a computer-based Fourier analyzer was increased by a factor of ten by creating several new machine language instructions using firmware. Areas to be microprogrammed were selected on the basis of performance measurements, by David C. Snyder, pg 17-24. Microcode.

[Author:] David [Dave] C. Snyder, pg 24

March 1975 v.26 n.7

Cover: New Model 86290A 2-to-18 GHz RF Plug-in installed in an 8620A Sweep Oscillator mainframe

A High-Performance 2-to-18-GHz Sweeper. This precise, compact microwave sweep oscillator is a significant contribution to its field. The latest microelectronic and YIG technology makes it possible, by Carl J. Enlow, Paul R. Hernday, pg 2-14. 86290A.

A 2-18-GHz YIG-Tuned Multiplier, by Robert Joly, pg 6

A 2.0-6.2-GHz YIG-Tuned Oscillator, by Roger Stancliff, Paul Hernday, pg 8

A 2.0-6.2-GHz Power Amplifier, by Ganesh Basawapatna, pg 11

Product Design of the 86290A, by Willaim Misson, Billy Knorpp, pg 12

How YIG Tuning Works, pg 13. Yttrium-Iron-Garnet.

Broadband Swept Network Measurements. Vector and scalar measurements can be made from 2 to 18 GHz in one sweep by pairing the new 2-18-GHz sweep oscillator with other microwave instruments, by John J. Dupre, Cyril J. Yansouni, pg 15-17. 8620A/86290A.

[Authors:] John [Jack] J. Dupre, Paul R. Hernday, Carl J. Enlow, Cyril J. Yansouni, pg 17

The Dual Function Generator: A Source of a Wide Variety of Test Signals. FM signals, AM signals, dc levels, tone bursts, pulses and ramps, in addition to sine, square and triangular waves, are produced by this new dual-source function generator, by Dan D. Danielson, Ronald J. Riedel, pg 18-24. 3312A.

Variable Symmetry with Constant Frequency, pg 20

[Authors:] Dan D. Danielson, Ronald J. Riedel, pg 24

April 1975 v.26 n.7

Cover: Model 5305A, a new low-cost compact, portable 1100-MHz frequency counter

A Portable 1100-MHz Frequency Counter. This new addition to the 5300 Measuring System is well suited for checking out land mobile communications and aeronautical navigation equipment, by Hans J. Jekat, pg 2-8. 5305A.

An Eight-Digit Mainframe for the 5300 Measuring System, by P. Thomas Mingle, pg 6

[Author:] Hans J. Jekat, pg 7

A New 5-GHz Transistor Process, pg 8

Big Timer/Counter Capability in a Portable Package. This 75-MHz, eight-function universal timer/counter is another snap-on module for the low-cost, compact 5300 Measuring System. Compatibility with battery pack, digital-to-analog converter, and HP interface bus modules provides extra versatility, by Kenneth J. MacLeod, pg 9-13. 5308A.

A Universal Autoranging System for a Universal Timer/Counter, pg 11

[Author:] Kenneth [Ken] J. MacLeod, pg 13

A High-Current Power Supply for Systems that use 5-volt IC Logic Extensively. This switching-regulated power supply gives 100A at 5 V with 70% efficiency. A heat-removal system allows compactness without loss of reliability, by Mauro DiFrancesco, pg 14-19. 62605M.

[Author:] Mauro DiFrancesco, pg 18

Band-Selectable Fourier Analysis. Frequency resolution in selected bands can be as much as 100 times better than conventional baseband Fourier analysis, by H. Webber McKinney, pg 20-24

[Author:] H. Webber [Webb] McKinney, pg 24

May 1975 v.26 n.9

Cover: Model 3551A Telephone Test Set

An Understandable Test Set for Making Basic Measurements on Telephone Lines. This new portable test set uses a digital processor to present direct-reading, autoranged measurements of level and frequency, substantially reducing operator errors. Other conveniences simplify set-up and operation, by Michael B. Aken, David K. Deaver, pg 2-9. 3551A, 3552A.

A Function Generator with a Well-Defined Output, pg 6

[Authors:] David [Dave] K. Deaver, Michael [Mike] Aken, pg 9

A Computer System for Analog Measurements on Voiceband Data Channels. Besides making nine data-channel performance tests automatically in less than two minutes, this new Transmission Parameter Analyzer is capable of a much broader range of measurements, by Roger F. Rauskolb, Stephen G. Cline, Robert H. Perdriau, pg 10-17. 5453A.

Portable Transponder Allows Two-Way Data Channel Measurements, pg 16

Hewlett-Packard Instruments for Checking Voice-Grade Telephone Lines, pg 17

[Authors:] Roger F. Rauskolb, Robert [Bob] H. Perdriau, Stephan [Steve] G. Cline, pg 17

A Precision Spectrum Analyzer for the 10-Hz-to-13-MHz Range. Adaptable to automatic systems or bench use, a new spectrum analyzer has measurement resolution of 0.01 dB, pass-bands as narrow as 3 Hz, and a dynamic range of 70 db, by Jerry W. Daniels, Robert L. Atchley, pg 18-24. 3571A.

Attenuating the Classical Attenuator Problem, pg 22

[Authors:] Robert [Bob] L. Atchley, Jerry W. Daniels, pg 24

June 1975 v.26 n.10

Cover: Model 2640A Interactive display terminal using its optional line-drawing character set to display a form to be filled in by the operator

Cost-effective, Reliable CRT Terminal is First of a Family. Microprocessor control and modular design result in a computer terminal that is powerful and flexible, yet low in cost. Jim Doub, engineering section manager, discusses the family concept and the philosophy behind the design, by James A. Doub, pg 2-5. 2640A.

The HP 2640A At Work as a Data Entry Terminal, by Terry Eastham, pg 4

[Author:] James [Jim] A. Doub, pg 5

A Functionally Modular Logic System for a CRT Terminal, by Arthur B. Lane, pg 6-10. 2640A.

Data Communications, pg 9

[Author:] Arthur [Art] B. Lane, pg 10

A High-Resolution Raster Scan Display, by Jean-Claude Roy, pg 11-15. 2640A.

2640A Sweep System, by George Crow, pg 14

2640A Power Supply, by George Crow, pg 15

[Author:] Jean-Claude [Jean] Roy, pg 15

Firmware for a Microprocessor-controlled CRT Terminal, by Thomas F. Waitman, pg 16-19. 2640A.

Testing the HP 2640A, by Edward Tang, pg 19

[Author:] Thomas [Tom] F. Waitman, pg 19

A Microprocessor-Scanned Keyboard, by Otakar Blazek, pg 20-21. 2640A.

[Author:] Otakar [Oty] Blazek, pg 21

Packaging for Function, Manufacturability, and Service, by Robert B. Pierce, pg 22-24. 2640A.

Designing with Engineering Foam Plastics, by Jerome Keever, pg 23

[Author:] Robert [Bob] B. Pierce, pg 24

July 1975 v.26 n.11

Cover: Model 5328A Universal Counter and its optional input modules

Modularity Means Maximum Effectiveness in Medium-Cost Universal Counter. A single mainframe and a wide choice of optional timer, counter, and DVM modules provide better performance at lower cost, meet each user’s needs precisely, and leave room for future growth, by Bruce S. Corya, James F. Horner, pg 2-8. 5328A.

Mechanical Design of an Option-configurable Counter, pg 6

[Authors:] James [Jim] F. Horner, Bruce S. Corya, pg 7

Using a Modular Universal Counter. Here’s what the various features of the new Model 5328A Universal Counter can do for the user, by Alfred Langguth, William D. Jackson, pg 9-14

Three-State Trigger Lights, pg 10

HP-IB Option Fits Simple or Sophisticated Systems Applications, pg 13

[Authors:] William [Bill] D. Jackson, Alfred [Al] Langguth, pg 14

Synthesized Signal Generator Operation to 2.6 GHz with Wideband Phase Modulation. New plug-ins give the Model 8660-series Synthesized Signal Generators programmable operation to 2.6 GHz and a capability for phase modulation, by Young Dae Kim, James A. Hall, pg 15-20. 8660C, 86603A, 86634A.

Phase Modulation, pg 18-19

[Authors:] James [Jim] A. Hall, Young Dae Kim, pg 20

Applications of a Phase-Modulated Signal Generator. Once a capability is made available, applications emerge. Here are a few that have been found for the phase-modulated synthesized signal generator in HP’s own laboratories, by James A. Hall, pg 21-24

August 1975 v.26 n.12

Cover: Multichannel is the byword as new test instruments are developed in response to the accelerating rush to digital electronic

The Logic State Analyzer, a Viewing Port for the Data Domain. A new logic state analyzer has expanded capabilities that speed the location of the sources of problems in digital systems and broaden the range of problems that can be resolved with this class of instrument, by Charles T. Small, Justin S. Morrill, Jr., pg 2-10. 1600A, 1607A.

Inside the Model 1607A Logic State Analyzer, by Thomas Saponas, pg 9

[Authors:] Charles [Chuck] T. Small, Justin S. Morill, Jr., pg 10

Oscilloscope Triggering on Digital Events, pg 11

Unravelling Problems in the Design of Microprocessor-Based Systems. The debugging of a microprocessor-based system is expedited considerably by an instrument that provides an appropriate disclosure of what’s going on inside the system, by William E. Wagner, pg 12-16

[Author:] William [Bill] E. Wagner, pg 16

A Multichannel Word Generator for Testing Digital Components and Systems. This instrument supplies eight 32-bit serial words simultaneously at clock rates up to 50 MHz or, conversely, 32 8-bit parallel words. Versatile outputs adapt the generator to a wide range of tests involving digital components, assemblies and data buses, by Wolfgang Kappler, Arndt Pannach, pg 17-24. 8016A.

Word Generator Operation with the HP Interface Bus, pg 19

Problem Solutions with the Model 8016A Word Generator, by Jurgen Buesen, pg 21-22

[Authors:] Wolfgang Kappler, Arndt Pannach, pg 24

September 1975 v.27 n.1

Cover: Test procedures for Model 9510D can now be written in ATLAS, a high-level language that relieves the test procedure writer of the need for detailed knowledge of the test system

ATLAS: A Unit-Under-Test Oriented Language for Automatic Test Systems. A engineer can write test procedures in ATLAS without detailed knowledge of the system that will do the testing. HP’s new ATLAS compiler is the first comprehensive implementation of what is fast becoming a world-wide standard test language, by William R. Finch, Robert B. Grady, pg 2-13. 9500.

Minimizing Test Program Expenses, pg 8

HP ATLAS Language Words and Compiler Commands, pg 12

[Authors:] Robert [Bob] B. Grady, William [Bill] R. Finch, pg 13

Automatic 4.5-GHz Counter Provides 1-Hz Resolution. Its new frequency counter offers high performance for telecommunications and other applications at a modest cost. Systems compatibility and built-in diagnostics enhance its value, by Ali Bologlu, pg 14-18. 5341A.

[Author:] Ali Bologlu, pg 18

A New Instrument Enclosure with Greater Convenience, Better Accessibility, and High Attenuation of RF Interference. Evolutionary changes in the way electronic circuits are packaged have called for a new approach to enclosure design. Described here is the results of a corporate-wide effort to meet customers’ changing requirements, by Allen F. Inhelder, pg 19-24

[Author:] Allen [Al] E. Inhelder, pg 24

October 1975 v.27 n.2

Cover: New Model 436A Digital Power Meter and the new Model 8484A Power Sensor

Digital Power Meter Offers Improved Accuracy, Hands-Off Operation, Systems Compatibility. Its four-digit general-purpose microwave power meter features autoranging, absolute or relative readings, 0.01 dB resolution, and 0.02 dB basic accuracy. Six power sensors cover a frequency range of 100 kHz to 18 GHz and a power range of –70 dBm to +35dBm, by Allen P. Edwards, pg 2-7. 436A.

Automatic Gain and Attenuation Measurements, pg 5

[Author:] Allen P. Edwards, pg 7

Very-Low-Level Microwave Power Measurements. A new low-barrier Schottky diode power sensor makes it possible to measure power as low as 100 picowatts over a frequency range of 10 MHz to 18 GHz, by Ronald E. Pratt, pg 8-10. 8484A.

[Author:] Ronald [Ron] E. Pratt, pg 10

Active Probes Improve Precision of Time Interval Measurements. Usable with most time interval counters, this new probe system helps solve problems caused by trigger point indeterminacy, system delay errors, inadequate dynamic range, and circuit loading, by Robert W. Offermann, Steven E. Schultz, Charles R. Trimble, pg 11-16. 5363A.

See Also: Correction: To the accuracy noted in the article “Active Probes Improve Precision of Time Interval Measurements”, page 11 in the November 1975 issue

[Authors:] Steven [Steve] E. Schultz, Robert [Bob] W. Offermann, Charles [Charlie] R. Trimble, pg 16

Flow Control in High-Pressure Liquid Chromatography. Operation at high pressures introduces many problems in the control of fluid flow when two solvents must be mixed in a precise ratio. Hydraulic capacitors provide the key to precision solvent mixing, by Helge Schrenker, pg 17-24. 1010B.

[Author:] Helge Schrenker, pg 24

November 1975 v.27 n.3

Cover: The HP-21 Scientific, the HP-22 Business and Financial, and the HP-25 Programmable Scientific

Three New Pocket Calculators: Smaller, Less Costly, More Powerful. HP’s second-generation pocket calculator family now includes a basic scientific model, a programmable scientific model, and a business model, by Randall B. Neff, Lynn Tillman, pg 2-7. HP-21, HP-22, HP-25.

An Example of HP-25 Programming, pg 6

[Authors:] Randall [Randy] B. Neff, Lynn Tillman, pg 7

Inside the New Pocket Calculators. The HP-21 type of calculator isn’t just a stripped-down version of older HP pocket calculators, but an entirely new design, by Richard E. Whicker, Michael J. Cook, George M. Fichter, pg 8-12

Packaging the New Pocket Calculators, by Thomas A. Hender, pg 10

[Authors:] Richard [Rich] E. Whicker, Michael [Mike] J. Cook, pg 11

Correction: To the accuracy noted in the article “Active Probes Improve Precision of Time Interval Measurements”, page 11 in the October 1975 issue, pg 11

[Authors:] Thomas [Tom] A. Hender, George M. Fichter, pg 12

A New Microwave Link Analyzer for Communications Systems Carrying Up to 2700 Telephone Channels. Multiplexed communications systems can operate at full capacity only when distortions are at a low level. This new instrument helps optimize the performance of wide-bandwidth systems, by Ian Matthews, Svend Christensen, pg 13-24. 3790A, 3792A.

The Detection of AM-to-PM Conversion by Means of High-Frequency Test Signals, by Ian Matthews, pg 18 –20

[Authors:] Ian Matthews, Svend Christensen, pg 24

December 1975 v.27 n.4

Cover: An oscilloscope displays wave-forms in the traditional manner but it can also be adapted to display 1’s and 0’s in a data format

A 100-MHz Analog Oscilloscope for Digital Measurements. A new general-purpose oscilloscope has features such as dual-channel magnification and third-channel trigger display that enhance its versatility, particularly with respect to measurements in digital systems, by Allan I. Best, pg 2-7. 1740A.

Working in the Data Domain – Logic State Analyzers and Oscilloscopes, by Charles H. House, pg 5

A “Visible” Mechanical Design, by John W. Campbell, pg 6

[Author:] Allan [Al] I. Best, pg 7

An Oscilloscope Vertical-Channel Amplifier that Combines Monolithic, Thick-Film Hybrid, and Discrete Technologies. To minimize maintenance and calibration times by minimizing the number of parts and the number of adjustments, a high degree of integration was incorporated in the vertical amplifier system of the Model 1740A Oscilloscope, by Joe K. Millard, pg 8-11

Designing a High-Density Thick-Film Hybrid Integrated Circuit, by Richard D. Tabbutt, pg 9

[Author:] Joe K. Millard, pg 11

A Real-Time Operating System with Multi-Terminal and Batch/Spool Capabilities. RTE-II, an advanced version of HP’s real-time executive system for 2100 Series Computers, has several new features that aid both real-time measurement and control and concurrent background activities such as program development, by George A. Anzinger, Adele M. Gadol, pg 12-20. 92001A, Real-Time Executive System II.

Introduction to Real-Time Operating Systems, by Van Diehl, Kenneth A. Fox, pg 15

[Authors:] Adele M. Gadol, George A. Anzinger, pg 20

Real-Time Executive System Manages Large Memories. RTE-III does everything other HP real-time executive systems do and adds large-memory management (up to 256K words) using HP’s dynamic mapping system, by Linda W. Averett, pg 21-24. 92060A, Real-Time Executive System III.

[Author:] Linda W. Averett, pg 24

January 1974 v.25 n.5

Cover: Model 1601L Logic State Analyzer

The Logic State Analyzer – Displaying Complex Digital Processes in Understandable Form. Sixteen consecutive 12-bit works from any part of a data stream are captured and held for display by a new Logic State Analyzer, greatly simplifying the task of monitoring program flow when troubleshooting complex digital processors, by William A. Farnbach, pg 2-9. 1601L.

[Author:] William [Bill] Farnbach, pg 9

A Laser Interferometer That Measures Straightness of Travel. This unique “straightedge” combines the high accuracy of the optical flat with the long range of the laser to achieve submicron resolution over ranges up to 100 feet, by Richard R. Baldwin, David A. Harland, Barbara E. Grote, pg 10-20. 5526A.

Machine Tool Calibration with the Expanded Laser Measurement System, pg 13-14. 5526A

Ray-Trace Program, pg 17-18

[Author:] Richard [Dick] R. Baldwin, pg 19

[Authors:] Barbara E. Grote, David A. Harland, pg 20

February 1974 v.25 n.6

Cover: Model 1220A Oscilloscope

Practical Oscilloscopes at Workaday Prices. 15-MHz bandwidth, 2mV sensitivity, 3% accuracy, sweeps usable to 20ns/div and an 8×10 cm CRT with internal graticule would normally class these oscilloscopes as laboratory instruments but they will find wide use in the service shop, technical school, and industry, by Hans-Gunter Hohmann, pg 2-10. 1220A, 1221A.

[Author:] Hans-Gunter Hohmann, pg 9

Laboratory Notebook. Sharp Cut-off Filters for That Awkward UHF Band, by James Larsen, Richard Dilman, Richard Tverdoch, pg 10

A Data Error Analyzer for Tracking Down Problems in Data Communications. A combined data generator and self-synchronizing receiver, this new instrument makes six different measurements simultaneously, helping to pinpoint sources of trouble in data communications systems, by Jeffrey R. Duerr, pg 11-20. 1645A.

[Author:] Jeffrey [Jeff] R. Duerr, pg 20

March 1974 v.25 n.7

Cover: Model 4271A Digital LCR meter

An Automatic, Precision 1-MHz Digital LCR Meter. This new LCR Meter is especially designed for measurements of low-value components in integrated circuits and thin-film hybrid circuits, as well as of discrete components. It uses a four-pair measurement technique to reduce errors caused by stray capacitance, residual inductance and mutual inductance of the test leads, by Kohichi Maeda, pg 2-9. 4271A.

Phase Error Compensation, pg 6

[Author:] Kohichi Maeda, pg 9

A Moderately Priced 20-MHz Pulse Generator with 16-Volt Output. Suitable for general-purpose use, this instrument also has the pulse amplitude needed for driving the newer CMOS circuits, by Rainer Eggert, Gunter Krauss, pg 10-15. 8011A.

[Author:] Gunter Krauss, pg 14

[Author:] Rainer Eggert, pg 15

Appendix: A Capacitance Multiplier, pg 15

Laboratory Notebook. Logarithmic Amplifier Accepts 100-dB Signal Range, by Robert Jeremiasen, pg 16-17

Versatile VHF Signal Generator Stresses Low Cost and Portability. This high-quality, reliable instrument fits the budget and the performance needs of a variety of users, by Robert R. Hay, pg 18-24. 8654A.

Specifying Signal Generator Noise, pg 21

[Author:] Robert [Bob] R. Hay, pg 23

April 1974 v.25 n.8

Cover: New 9880A/B Mass Memory System for the 9830A Calculator

Mass Memory System Broadens Calculator Applications. Inventory control, payroll, order processing and other large-data-base applications are now within the capability of HP’s most powerful desktop calculator, the BASIC language Model 30, by Chris J. Christopher, Havyn E. Bradley, pg 2-12. 9880A, 9880B.

Mass Memory for Business Applications, pg 4

[Authors:] Havyn E. Bradley, Chris J. Christopher, pg 12

An Easily Calibrated, Versatile Platinum Resistance Thermometer. Unusual features of this digital thermometer are a choice of normal or expanded resolution, linear analog output, interchangeable probes, and many options including a battery pack and digital output, by Tony E. Foster, pg 13-17. 2802A.

[Author:] Tony E. Foster, pg 17

Appendix: Analog Linearization, pg 17

Speeding the Complex Calculations Required for Assessing Left Ventricular Function of the Heart. Adapting computers to medical tasks has been slower than originally anticipated, going step-by-step as truly suitable tasks are identified and implemented. Here’s another example of how a computer can help out when a suitable task is identified, by Peter Dikeman, Chi-ning Liu, pg 18-24. 5693A.

[Authors:] Peter Dikeman, Chi-ning Liu, pg 24

May 1974 v.25 n.9

Cover: The HP-65 – a personal computer

The “Personal Computer”: A Fully Programmable Pocket Calculator. This 11 ounce battery-powered marvel has the computing power of an advanced scientific pocket calculator and is programmable as well, so it can adapt to any number of specialized uses, by Chung C. Tung, pg 2-7. HP-65.

See Also: Correction: To the result for figure 4 on page 10, and to other text in the article “Programming the Personal Computer”, page 17 in the June 1974 issue

A Self-Clocking Two-Track Recording Technique, pg 4

[Author:] Chung C. Tung, pg 7

Programming the Personal Computer. Wherein are revealed the functions of the keys, how problems are solved, and a bit of what goes on inside, by R. Kent Stockwell, pg 8-14. HP-65. See Also: Correction [results for figures] in the June 1974 issue on page 17

Appendix: HP-65 Programmable Pocket Calculator Functions and Operations, pg 14

[Author:] R. Kent Stockwell, pg 14

Designing a Tiny Magnetic Card Reader. Here’s how it was designed and how it works, by Robert B. Taggart, pg 15-17. HP-65.

[Author:] Robert [Bob] B. Taggart, pg 17

Testing the HP-65 Logic Board. The board and its automatic test system are designed for rapid production testing and troubleshooting, by Kenneth W. Peterson, pg 18-20

[Author:] Ken Peterson, pg 20

Economical Precision Step Attenuators for RF and Microwaves. Refinements in edgeline transmission structures and thin-film techniques lead to wideband step attenuators that are smaller and less expensive than previous models, by David R. Veteran, George R. Kirkpatrick, pg 21-24. 8495A, 8495B, 8496A, 8496B.

[Authors:] David [Dave] R. Veteran, George [Bob] Kirkpatrick, pg 24

June 1974 v.25 n.10

Cover: Model 5345A Electronic Counter that advances the art of pulsed RF frequency measurements with frequency averaging

A New Generation in Frequency and Time Measurements. This new general-purpose electronic counter refines the art of frequency and time measurements to an impressive degree by the application of advanced technology, by James L. Sorden, pg 2-8. 5345A.

[Author:] James [Jim] L. Sorden, pg 8

The 5345A Processor: An Example of State Machine Design, by Ronald E. Felsenstein, pg 9-11

[Author:] Ronald [Ron] L. Felsenstein, pg 11

Time Interval Averaging: Theory, Problems, and Solutions, by David C. Chu, pg 12-15

Appendix: Time Interval Estimation in the Presence of Quantization Error, pg 15

[Author:] David [Dave] C. Chu, pg 15

Third Input Channel Increases Counter Versatility, by Arthur S. Muto, pg 16-18. 5353A.

Correction: To the result for figure 4 on page 10, and to other text in the article “Programming the Personal Computer”, page 8 in the May 1974 issue, pg 17

[Author:] Arthur [Art] S. Muto, pg 18

A Completely Automatic 4-GHz Heterodyne Frequency Converter, by Ali Bologlu, pg 19-21. 5354A.

[Author:] Ali Bologlu, pg 21

Interface Bus Expands Instrument Utility, by Bryce E. Jeppsen, Steven E. Schultz, pg 22-24. 5354A, ASCII Programmable Modules, 59301A, 59303A, 59304A, 59306A, 59307A, 59308A, 59309A, 10631A/B/C.

[Authors:] Steven [Steve] E. Schultz, Bryce E. Jeppsen, pg 24

July 1974 v.25 n.11

Cover: IMAGE, a sophisticated new database management system for HP 2100 and HP 3000 Computers, has information management capabilities formerly available only in large computer systems

Powerful Data Base Management System for Small Computers. For the first time, sophisticated data management is available to the user of computers as small as the HP 2100 and HP 3000, by Richard E. McIntire, pg 2-10. IMAGE/3000, QUERY3000, IMAGE/2000, QUERY/2000.

[Author:] Richard [Dick] E. McIntire, pg 10

Why Data Base Management Systems, pg 5

Quality Frequency Counters Designed for Minimum Cost. Lowest possible cost was a major design objective for these counters. But so were high quality, excellent performance, ease of service and efficient production, by Warren J. O’Buch, Lewis W. Masters, pg 11-14. 5381A, 5382A.

[Authors:] Warren J. O’Buch, Lewis [Lew] J. Masters, pg 14

A Versatile Bipolar Power Supply/Amplifier for Lab and Systems Use. The elements of a power supply/amplifier can be combined to perform as several different instruments: a precision bipolar power supply, a fast-responding programmable power supply, a low-distortion current-limiting power amplifier, a power amplifier with programmable gain, by Santo Pecchio, pg 15-19. 6825A, 6827A.

[Author:] Santo Pecchio, pg 19

An Automatic Exposure Control for a Lab-Bench X-Ray Camera. Locating shorted bonding wires in IC’s, checking pad alignment in multilayer circuit boards, and finding much other “inside” information becomes as easy as taking snapshots when you use an industrial x-ray system that has automatic exposure control, by John L. Brewster, pg 20-24. 43805.

[Author:] John Brewster, pg 24

August 1974 v.25 n.12

Cover: Model 4940A Transmission Impairment Measuring Set

Measuring Analog Parameters of Voiceband Data Channels. A new Transmission Impairment Measuring Set combines the measurement capabilities of six separate instruments into one portable package. It measures fifteen parameters affecting data transmission in one-fourth the time formerly required, by Noel E. Damon, pg 2-7. 4940A.

Transient Measurements, by Paul G. Winninghoff, pg 8-9

The 4940A Sine Wave Transmitter, by Richard T. Lee, pg 9-11

Nonlinear Distortion Measurements, by Donald A. Dresch, pg 12-13

Envelope Delay Distortion Measurements, by Johann J. Heinzl, Richard G. Fowles, pg 14-16

Peak-to-Average Ratio Measurements, by Erhard Ketelsen, pg 17-18

[Authors:] Noel E. Damon, Donald [Don] A. Dresch, Richard [Dick] T. Lee, pg 19

[Authors:] Erhard Ketelsen, Richard [Dick] G. Fowles, Johann J. Heinzl, Paul G. Winninghoff, pg 19

Microwave Integrated Circuits Solve a Transmission Problem in Educational TV. An educational TV system using a satellite transmission link needs a state-of-the-art ground-station receiver that doesn’t cost very much. Microwave integrated circuits provide a way, by Arthur Fong, James A. Hall, Douglas J. Mellor, Richard D. Pering, pg 20-24. ATS-6.

Direct-to-Schoolhouse Satellite Relay of Video Programs, pg 22

[Authors:] Douglas [Doug] J. Mellor, Richard [Rick] D. Pering, James [Jim] A. Hall, Arthur [Art] Fong, pg 24

September 1974 v.26 n.1

Cover: Model 8082A Pulse Generator

A 250-MHz Pulse Generator with Transition Times Variable to less than 1 ns. Generating pulses at a 250-MHz repetition rate while giving the operator full control over the shape of these pulses requires microcircuit techniques, by Gert Globas, Eldon Cornish, Joel Zellmer, pg 2-7. 8082A.

[Authors:] Eldon Cornish, Joel Zellmer, Gert Globas, pg 7

Optimizing the Design of a High-Performance Oscilloscope. A wideband oscilloscope is more useful if its performance is not subject to variations that may degrade measurement accuracy. Its value is even more apparent if this consistent performance is achieved at moderate cost, both initial and long-term, by S. Raymond Kushnir, Thomas J. Zamborelli, P. Kent Hardage, pg 8-15. 1720A.

[Authors:] P. Kent Hardage, Thomas [Tom] J. Zamborelli, S. Raymond [Ray] Kushnir, pg 14

A Thin-Film/Semiconductor Thermocouple for Microwave Power Measurements. This device is what makes it possible for the 435A/8481A Power Meter to outperform thin-film and thermistor power meters, by Weldon H. Jackson, pg 16-18

[Author:] Weldon H. Jackson, pg 18

Microelectronics Enhances Thermocouple Power Measurements. Day-to-day microwave power measurement accuracy is substantially improved by this new thermocouple power meter system, without sacrificing the convenience of earlier thermistor instruments, by John Lamy, pg 19-24. 435A/8481A.

[Author:] John C. Lamy, pg 23

October 1974  v.26 n.2

Cover: The HP 21MX Series

A User-Oriented Family of Minicomputers. HP’s minicomputer section manager discusses the philosophy behind the design of this new computer series, by John M. Stedman, pg 2-6. 21MX.

The Value of User Microprogrammability, pg 4

[Author:] John M. Stedman, pg 6

Microprogrammable Central Processor Adapts Easily to Special User Needs. The 21MX processor maintains program and I/O compatibility with its HP predecessors, but has a new micro-instruction format that makes it easier to extend the instruction set, by Philip Gordon, Jacob R. Jacobs, pg 7-14

Testing the 21 MX Processor, by Richard L. Hammons, Cleaborn C. Riggins, pg 10-11

[Authors:] Philip [Phil] Gordon, Jacob [Jake] R. Jacobs, Clearborn  [Cle] C. Riggins, Richard [Rich] L. Hammons, pg 14

All Semiconductor Memory Selected for New Minicomputer Series. Considerations of cost, reliability, power, density and speed all pointed to the 4K RAM as the best choice, by Robert J. Frankenberg, pg 15-20. 21MX.

The Million-Word Minicomputer Main Memory, by John S. Elward, pg 19-20

[Authors:] Robert [Bob] J. Frankenberg, John [Jack] S. Elward, pg 20

A Computer Power System for Severe Operating Conditions. The power supply system of 21MX Series Computers differs in many respects from the power supplies of other minicomputers. It is less vulnerable to poor ac line conditions than the supplies of most minicomputers of similar size and cost, by Richard C. Van Brunt, pg 21-24

[Author:] Richard [Dick] C. Van Brunt, pg 24

November 1974 v.26 n.3

Cover: A 9700A Distributed System Central Station collects data from two satellite automatic test systems dedicated to measurement tasks

Distributed Computer Systems. As multiple minicomputers collect data, control processes, and run tests, a central computer system supports them all, gathering data, generating management reports, and performing other tasks at the same time, by Shane Dickey, pg 2-11. 9700, 91700A, 91703A, 91704A, 91705A.

A Working Distributed System, pg 4-5

Satellites for Specific Applications, pg 8

RTE File Management Package, pg 10

[Author:] Shane Dickey, pg 11

A Quality Course in Digital Electronics. This practical approach to the teaching of digital integrated circuit principles includes hardware, a textbook and a 26-experiment laboratory workbook, by James A. Marrocco, Barry Bronson, pg 12-14. 5035T.

[Authors:] Barry Bronson, James [Jim] A. Marrocco, pg 14

Simplified Data-Transmission Channel Measurements. Synthesized signal generation and a dual time-interval measurement simplify evaluation of group delay and attenuation distortion in voice-grade telephone lines used for transmitting digital data, by David H. Guest, pg 15-24. 3770A.

Measurement of Amplitude and Delay Distortion, pg 17

A Group Delay Standard, pg 20

December 1974 v.26 n.4

Cover: The LED numeric display on this oscilloscope is an essential part of a new way of measuring very short time intervals

Improved Accuracy and Convenience in Oscilloscope Timing and Voltage Measurements. Timing measurements are made more easily and accurately with the dual-delayed sweep of a new oscilloscope. An internal microprocessor gives direct readout of time or voltage, greatly simplifying measurement procedures, by William B. Risley, Walter A. Fischer, pg 2-11. 1722A.

[Authors:] William [Bill] B. Risley, Walter [Walt] A. Fischer, pg 11

Laboratory Notebook: An Active Loop-Holding Device, by David H. Guest, pg 11

A Supersystem for BASIC Timesharing. This HP 3000 Computer System is optimized for BASIC language timesharing, but it also supports concurrent batch processing in BASIC, FORTRAN, COBOL, and SPL, by Nealon Mack, Leonard E. Shar, pg 12-17

[Authors:] Nealon [Neal] Mack, Leonard [Len] E. Shar, pg 17

Deriving and Reporting Chromatograph Data with a Microprocessor-controlled Integrator. Printing retention times next to the peaks while plotting the chromatogram, a new integrator measures the chromatograph peak areas and, at the end of the run, derives concentrations and prints the analysis on the chromatogram, by Andrew Stefanski, pg 18-24. 3380A.

A Printing Plotter, pg 20

Adapting a Calculator Microprocessor to Instrumentation, by Hal Barraclough, pg 22

[Authors:] Andrew [Andy] Stefanski, Hal Barraclough, pg 23

January 1973 v.24 v.5

Cover: The new HP 3000 Computer System

An Economical Full-Scale Multipurpose Computer System. This is the first 16-bit computer system to have a hardware stack architecture and virtual memory. It handles time-sharing, batch processing, and real-time operations in several languages concurrently, by Bert E. Forbes, Michael D. Green, pg 2-6. 3000.

A Computer for All Reasons, pg 7. 3000.

[Authors:] Bert E. Forbes, Michael [Mike] E. Green, pg 8

Central Bus Links Modular HP 3000 Hardware. Sharing the bus can be one or more CPU’s, I/O processors, memory modules, high-speed I/O channels and special devices. The microprogrammed CPU’s have a procedure-oriented stack architecture, by Jamshid Basiji, Arndt B. Bergh, pg 9-14

[Authors:] Jamshid [Jim] Basiji, Arndt [Arne] B. Bergh, pg 14

Software for a Multilingual Computer. SPL is a high-level language that produces code that’s as efficient as other systems’ assembly-language code. Other 3000 languages are FORTRAN, BASIC and COBOL, by William E. Foster, pg 15-19

[Author:] William [Bill] E. Foster, pg 19

Single Operating System Serves all HP 3000 Users. The Multiprogramming Executive operating system takes care of command interpretation, file management, memory management, scheduling and dispatching, and input/output management for time-sharing, batch and real-time users, by Thomas A. Blease, Alan Hewer, pg 20-24

[Authors:] Thomas [Tom] A. Blease, Alan Hewer, pg 24

February 1973  v.24 n.6

Cover: HP’s new Model 8640A/B 0.45-550 MHz Signal Generator

A Solid State VHF Signal Generator for Today’s Exacting Requirements. The spectral purity of a vacuum-tube oscillator and the freedom from aging effects characteristic of solid-state oscillators are combined in a new 450 kHz-550 MHz signal generator.  High-quality FM and AM capabilities are included, too, in addition to CW, by Michael S. Marzalek, Larry C. Sanders, Kenneth L. Astrof, Raymond M. Shannon, pg 2-13 8640A, 8640B.

Signal Generators and Radio Receiver Measurements, pg 3

[Authors:] Kenneth [Ken] L. Astrof, Larry C. Sanders, Michael [Mike] S. Marzalek, Raymond [Ray] M. Shannon, pg 13

Computer-Aided Design of Modular Power Supplies. A universal circuit and a computer program – these make it possible to obtain fixed-voltage, modular power supplies in a wide range of output ratings at low cost, but with laboratory-grade performance and reliable operation assured, by Willis C. Pierce, Jr., James S. Gallo, William T. Walker, pg 14-20. 62000.

[Authors:] James [Jim] S. Gallo, William [Bill] T. Walker, Willis [Bill] C. Pierce, pg 20

March 1973 v.24 n.7

Cover: HP Model 5700A Gas Chromatograph

High Performance Flame-Ionization Detector System for Gas Chromatography. A new electrometer circuit plus improvements in mechanical design bring a higher level of performance to a widely-used technique for chemical analysis, by Douglas H. Smith, pg 2-10. 5700A.

Gas Chromatography, pg 4-5

The 5700A-series Gas Chromatographs, pg 8

[Author:] Douglas [Doug] A. Smith, pg 10

Synthesized Signal Generation to 1.3 GHz. Because they maintain quartz-crystal stability at all frequencies over a wide range, frequency synthesizers find growing use in testing procedures. With the system described here, synthesizer applications can now extend well into the UHF range, by Bradley Stribling, Young Dae Kim, Roland Hassun, Dieter Scherer, Melvin Humpherys, Charles Cook, pg 11-19. 86602A.

A 0.1 to 1300 GHz Amplifier, pg 15

[Authors:] Dieter Scherer, Young Dae Kim, Charles W. Cook, Melvin [Dee] D. Humpherys, Bradley [Brad] C. Stribling, Roland [Rolly] Hassun, pg 19

A Greater Range of Capabilities for the Compact, Plug-on Digital Multimeter. Higher sensitivity for voltage and resistance measurements, 5-digit resolution and a new “set range” concept are given the inexpensive 3470 Measurement System by new plug-on modules, by Arthur Dumont, Stephen Venzke, Reid Gardner, pg 20-24. 3470, 34703A, 34740A, 34750A.

[Authors:] Arthur [Art] J. Dumont, Stephen [Steve] B. Venzke, Reid J. Gardner, pg 24

April 1973 v.24 n.8

Cover: Behind the type N connector on the front panel of Model 5340A Frequency Counter is the assembly shown here: a power splitter followed by two wide-band thin-film hybrid samplers and other elements of two phase-locked loops

A High-Performance Automatic Microwave Counter. This new counter needs only a single input to measure 10Hz to 18 GHz, and its sensitivity is many times better than previous counters. It’s also systems compatible, by Richard F. Schneider, pg 2-9. 5340A.

[Author:] Richard [Dick] F. Schneider, pg 8

A dc-to-20-GHz Thin-film Signal Sampler for Microwave Instrumentation. This rugged, miniature, wideband sampler is responsible for many of the advanced capabilities of the new Model 5340A Microwave Counter, by Jerry Merkelo, pg 10-13

[Author:] Jerry Merkelo, pg 13

Automating the Calibration Laboratory.  This new family of systems, combining standard and specially developed hardware and software, greatly reduces instrument calibration times without sacrificing precision or thoroughness, by John L. Minck, E. Robert Aikin, pg 14-24. 9550.

Some Definitions for Calibration Laboratory Work, pg 17

Novel Procedures Speed Automatic Calibrations, pg 18-19

Observations from an Operating System, pg 23

[Authors:] John L. Minck, E. Robert [Bob] Aikin, pg 23

May 1973 v.24 n.9

Cover: Ray Hutchinson at the Pacific Stock Exchange holding a HP-80 Business Pocket Calculator

A Pocket-Sized Answer Machine for Business and Finance. This new nine-ounce, battery-powered calculator replaces most commonly used financial tables, such as compound interest, annuities and bonds. It’s also a 200-year calendar, by William L. Crowley, France Rode, pg 2-9. HP-80.

[Authors:] France Rode, William [Bill] L. Crowley, pg 9

Laboratory Notebook: Thick Films Widen Attenuator Response, by Thomas Zamborelli, pg 9

A More Rugged, Cleaner Writing Oscillographic Ink Recorder. This new oscillographic recording system features a reliable low-pressure ink system, instant-dry near-black ink, plug-in versatility and a rugged, serviceable design, by Lawrence Brunetti, pg 10-17. 7402A.

Single-Channel 100-mm-Wide Recording, pg 14

Appendix: Dynamic Writing System Analysis, pg 15-16

[Author:] Lawrence [Larry] Brunetti, pg 17

A Quiet, Low-Cost, High-Speed Line Printer. This thermal printer writes 80 column lines at 250 lines per minute. Developed primarily for the 9830A Calculator, it’s a general-purpose printer that’s easily interfaced to a variety of controllers, by Dick B. Barney, James R. Drehle, pg 18-24. 9866A.

The Thermal Printhead Story, pg 23. 9866A.

[Authors:] Dick B. Barney, James [Jim] R. Drehle, pg 24

June 1973 v.24 n.10

Cover: The tweezers hold a new monolithic silicon-on-glass diode quad

Schottky-Barrier Diodes Structured for Better High-Frequency Performance. Connecting discrete components into thin-film hybrid circuits becomes increasingly difficult as the demand for higher frequencies gives rise to smaller components. Described here is a way of fabricating diodes to gain high frequency performance without imposing severe mechanical limitations, by Raymond A. Morris, Jack H. Lepoff, pg 2-6. 5082-2709, -2716, -2768, -2769.

[Authors:] Jack H. Lepoff, Raymond [Ray] A. Morris, pg 6

DMM and DAC Modules Expand Low-Cost Measuring System. A five-digit multimeter/counter module and a three-digit digital-to-analog converter module are new members of the 5300 Measuring System joining the mainframe, battery pack, and four timer/counter modules previously available, by Lewis W. Master, James F. Horner, P. Thomas Mingle, pg 7-15. 5306A.

Which Multimeter? pg 9 5306A, 3470.

A Compact, Three-Digit Digital-to-Analog Converter Module, pg 11-12

Appendix: 5306A Noise Rejection Characteristics, pg 14

[Authors:] James [Jim] F. Horner, Lewis [Lew] W. Masters, P. Thomas [Tom] Mingle, pg 15

Laser/Calculator System Improves Encoder Plate Measurements. This in-house system is a good example of what the right combination of instruments and calculator can do for measurements. Developed for acceptance testing of the optical position-encoder plates used in HP moving-head disc drives, its speed and accuracy have helped improve yields from the original 20% to the present 90%, by Glenn O. Herreman, pg 16-18. 9820A, 5526A.

Calculator with Metrology Programs Now a Laser Option, pg 18. 9820A.

[Author:] Glenn O. Herreman, pg 18

Instrument Basics Without Pain. Engineers and non-engineers in science and technology have one thing in common: they need to understand electronic instruments. Hewlett-Packard’s Clyde Coombs has assembled a book that answers the need, by Ross Snyder, pg 19-20. Basic Electronic Instrument Handbook.

July 1973 v.24 n.11

Cover: The monochromator assembly, crystal disperser, electron lens and detector assembly from Model 5950A ESCA Spectrometer

A Second-Generation ESCA Spectrometer. Monochromatized x-rays, a dispersion compensated electron optical system and an improved detection system enhance the sensitivity and resolution of a powerful analytical technique – Electron Spectroscopy for Chemical Analysis, by Michael A. Kelly, Charles E. Tyler, pg 2-14. 5950A.

Electronic Spectroscopy for Chemical Analysis, pg 5-6

The Charging Effect, pg 10. 5950A.

[Authors:] Charles [Check] E. Tyler, Michael [Mike] A. Kelly, pg 14

Compact Function Generator with Enhanced Capability/Cost Ratio. A no-frills design plus a computer’s help in verifying zero production defects brings the cost of this handy instrument down without sacrificing quality, by E. Harry Heflin, pg 15-20. 3311A.

Low-Cost Function Generator Circuits, pg 18-19

[Author:] E. Harry Heflin, pg 20

August 1973 v.24 v.12

Cover: The HP 9540 Transceiver Test System helps assure reliability by improving quality control, and lowers test costs, too

Automated Transceiver Testing. A new computerized system is dedicated to production and maintenance testing of mobile transmitters, receivers, and transceivers in the communication bands from 10 MHz to 1000 MHz. Tests conform to EIA standards and include AM, FM, audio, and power tests, by Dimitry A. Bobroff, pg 2-7. 9540.

Shielding and Grounding, pg 6

[Author:] Dimitry [Jim] A. Bobroff, pg 7

Signal Processing Techniques for Automatic Transceiver Testing. Here’s how the 9540 System test transceivers to EIA standards using only a voltmeter and a counter, by Robert G. Huenemann, pg 8-13

Sample Timing Considerations, pg 11-12. 9540.

[Author:] Robert [Bob] G. Huenemann, pg 13

Digitally-Controlled Current Sources for New Ways of Making Automatic Measurements. Using a digitally-controlled current source as the stimulus in automatic test systems simplifies some measurements, improves others, and makes some easy that would be hard to do any other way, by Rene Peerboom, pg 14-20. 6140A, 6145A.

[Author:] Rene Peerboom, pg 19

September 1973 v.25 n.1 [back covers reads v.2 n.1]

Cover: Model 3580A Spectrum Analyzer

A Low-Frequency Spectrum Analyzer that Makes Slow Sweeps Practical. Tuning through a 5Hz-to-50kHz range with a one-hertz bandwidth must be done slowly. This new spectrum analyzer speeds up the process while bringing a number of other conveniences to this class of instrument, by William L. Hale, Gerald E. Weibel, pg 2-13. 3580A.

Precision Discriminator, pg 7

Permanent Waveform Storage, pg 9

Peak-Detecting Analog-to-Digital Converter, pg 10

Adapting a Sweep, pg 12-13

Optimum Sweep Rate, pg 12

[Authors:] Gerald [Jerry] E. Weibel, William [Bill] L. Hale, pg 13

A High-Performance Beam Tube for Cesium Beam Frequency Standards. The benefits are significant improvements in accuracy, short-term stability, settability, and sensitivity to external dc magnetic fields, by Ronald C. Hyatt, Louis F. Mueller, Terry N. Osterdock, pg 14-24. 5061A.

Appendix: Short Term Stability, pg 23

[Authors:] Ronald [Ron] C. Hyatt, Terry N. Osterdock, Louis [Lou] F. Mueller, pg 23

October 1973 v.25 n.2

Cover: Model 5000A Logic Analyzer’s two rows of 32 red light-emitting diodes display digital data occurring at the A and B inputs

The Logic Analyzer: A New Instrument for Observing Logic Signals. Designed specifically to solve digital design and troubleshooting problems, this new instrument provides a digital display with storage, positive and negative digital delay, combinatorial triggering and digital sequence comparison, by Mark Baker, Howard D. Marshall, Robin Adler, pg 2-16. 5000A.

Logic Analyzer Applications in Digital System Waveform Measurements, pg 5-6

Everyday Uses, pg 6

The IC Troubleshooters, pg 12

Stapled within the October 1973 issue: Hewlett-Packard Journal Index: Volumes 20, 21, 22, 23 and 24 – September 1968 through August 1973. PART I: Chronological Index pg 2-5. Part II: Subject Index  pg 6-12. Part III: Model Number Index, pg 13-16 (pages noted here are pages in the index, not in the journal).

[Authors:] Howard D. Marshall, Mark Baker, Robin Adler, pg 15

A Pulse Generator for Today’s Digital Circuits. This new dual-output Pulse Generator produces 16V pulses at high repetition rates and with as much as 16V offset. A new control arrangement makes pulse set-up much simpler, by Horst Link, Reinhard Falke, pg 17-24. 8015A.

[Authors:] Reinhard Falke, Horst Link, pg 24

November 1973 v.25 n.3

Cover: A hand-held digital multimeter has finally become reality

A Self-Contained, Hand-Held Digital Multimeter – A New Concept in Instrument Utility. Aside from clipping the coiled lead to any convenient reference point, only one hand is needed to hold this instrument and take a reading, by Robert L. Dudley, Virgil L. Laing, pg 2-9. 970A.

[Authors:] Virgil L. Laing, Robert [Bob] L. Dudley, pg 9

A Portable High-Resolution Counter for Low-Frequency Measurements. This snap-on functional module for the low-cost 5300 Measuring System makes six-digit measurements of frequencies between 0.833 Hz and 2 MHz. Special features help solve many low-frequency measurement problems, by Kenneth J. MacLeod, pg 10-15. 5307A.

Operation of the digital Programmable Frequency Generator, pg 14

[Author:] Kenneth [Ken] J. MacLeod, pg 15

A High-Speed Pattern Generator and an Error Detector for Testing Digital Systems. The rate at which errors occur in transferring digits through systems operating at bit rates as high as 150 M bits/s can be determined by a new Error Detector working with a new Data Generator, by James Robertson, John Stinson, Thomas Crawford, Ivan Young, pg 16-24. 3760A.

[Authors:] John Stinson, Thomas [Tom] Crawford, James Robertson, Ivan Young, pg 23

December 1973 v.25 n.4

Cover: The new Model 7155A Portable Strip-Chart Recorder

A Go-Anywhere Strip-Chart Recorder that Has Laboratory Accuracy. This rugged, portable recorder is designed to operate in the laboratory, in a moving vehicle or aircraft, in the desert, in freezing temperatures, on battery power or ac of various frequencies, even upside down, always within its laboratory specifications, by Rick A. Warp, Howard L. Merrill, pg 2-8. 7155A.

[Authors:] Rick A. Warp, Howard L. Merrill, pg 8

Telecommunication Cable Fault Location from the Test Desk. This new fault locator automates Wheatstone-bridge methods that have fallen into disuse because they are too cumbersome. The results is fast, easy fault location and better telephone service, by Thomas R. Graham, James M. Hood, pg 9-14. 4913A.

[Authors:] Thomas [Tom] R. Grahma, James [Jim] M. Hood, pg 14

High-Efficiency Modular Power Supplies Using Switching Regulators. The switching regulators’ advantages of smaller size and cooler operation used to be counterbalanced by higher cost, slower transient response and noise, both electrical and acoustical. These new power supplies reduce the disparity significantly, by B. William Dudley, Robert D. Peck, pg 15-20. 62604J-62628J.

[Authors:] B. William [Bill] Dudley, Robert [Bob] D. Peck, pg 20

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