Application Notes …
Many Application Notes (even old ones) are being posted by Keysight . From the search box on this Keysight page you can get results that include vintage app notes. For instance, searching on AN57 brings up the “AN57 Noise Figure Primer”. Please check Keysight’s site before scanning and submitting any Application Notes. Below, the first table contains several HP-published Application Note Indexes, which may form a good starting place for your initial search.
Year HP Application Notes Index 1962 Covers Application Notes 1 through 57 1963 Covers Application Notes 1 through 57 1967 Covers Application Notes up to 917, with no coverage on many older notes 1989 [100 pages] 50th Anniversary publication, well organized by Subject, Industry, Model ect.
HP Number Application Notes Title and Key Words AB 5 Current Source for Diode Testing AB 6 Application Bulletin 6, PIN Diode RF Resistance AN 19 A Technique For Calibrating Phase Shifters To High Accuracy AN 57-1 Fundamentals of RF and Microwave Noise Figure Measurements AN 57-1 AN 57-2 Noise Figure Measurement Accuracy AN 57-2 AN 62 Time Domain Reflectometry [20 pages, 1964, Keywords HP 1415A 215A] AN 64-1 Microwave Power Measurement AN 71 Advances in RF Measurements Using Modern Signal Generators 50kc – 480MC [71 pages, 1966] AN 88 LOGIC SYMBOLOGY (Logic Symbols) [28 pages, 1967] AN 89 Magnetic Tape Recording handbook [40 Pages, 1967, Keywords HP 3960 3968] AN 90 DC Power Supply Handbook (Harrison Division 1967) AN 95-1 S-Parameter Techniques for Faster, More Accurate Network Design AN 123 Floating Measurements and Guarding AN-124 True RMS Measurements AN 235 An Introduction to Balanced Circuits and Impedance Matching AN 240-1 Digital Signal Analysis Feedback Control System Measurements AN 243-4 Fundamentals of the z-Domain and Mixed Analog-Digital Measurements AN 292-1 Functional Analysis of the IEEE-488 Interface Bus AN 326 Coaxial Systems Principles of microwave connector care [11 Pages, 1986] AN 339-1 Impedance Characterization of Resonators Using the HP 4194A Impedance Gain-Phase Analyzer AN 339-2 Characteristic Impedance Measurement of PC Board Circuit Patterns AN 339-3 Crosstalk and Impedance Measurements of PC Board Patterns AN 339-9 Negative Impedance Measurements of Crystal Oscillators AN 718 Patient Safety AN 936 High Performance PIN Attenuator For Low Cost AGC Applications
Date Non-Numbered Application Style Notes 1975 Condensed Description of the Hewlett-Packard Interface Bus 1995 Designer’s Guide to Isolation Circuits
Op Note Part Number Operating Notes Title and Key Words 5955-6270 Hewlett-Packard miniature oscilloscope probes, models 10017A, 10018A, 10040A, 10041A, 10042A (Feb 1980)
Harrison Tech Letter # Harrison Laboratories Division Tech Letters Title and Key Words 1 Tech Let 2 Constant Voltage/Constant current Regulated Power Supplies Tech Let 3 MEASUREMENT OF LINE AND LOAD REGULATION OF DC POWER SUPPLIES Tech Let 4 MEASUREMENT OF OUTPUT IMPEDANCE OF A CONSTANT VOLTAGE POWER SUPPLY 5 6 Tech Let 7 Notes On DC Power Supply Isolation Measurement Tech Let 8 6920A Meter Calibrator Application Notes