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