Les Larson: Difference between revisions

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He designed the [[10A1]].
He designed the [[10A1]].


He later worked on the [[7000-series_scopes|7000 series]], including the [[7904]] and [[7854]].
He later worked on the [[7000-series_scopes|7000 series]], including the [[7904]] and [[7854]].  According to [[Barrie Gilbert]] in [https://ieeexplore.ieee.org/stamp/stamp.jsp?arnumber=4785651 ''The Gears of Genius''], Larson created the backplane design.


After that, he worked on the [[11000-series_scopes|11000 series]].
After that, he worked on the [[11000-series_scopes|11000 series]].
The [[SDI|SDI interface]] that allows 11000 series mainframes to control and test
 
11000 series plug-in was designed by Lester Larson.
Larson designed the [[SDI|SDI interface]] that allows 11000 series mainframes to control and test 11000 series plug-ins.
{{Documents|Author=Les Larson}}
{{Designer|Les Larson}}
{{Designer|Les Larson}}
==US Patents==
* 3394316 "Differential Amplifier Having Common Base Output Stage of Very High Output Impedance"
* 3663832 "Delay Pickoff Circuit"
* 3857059 "Oscilloscope Sweep System with Two Sweep Generators Having Speed Rate Switches and Sweep Mode Switches Operated by a Control Knob"
* 6781391 "Multi-channel, low input capacitance signal probe and probe head"
* 6847199 "Capturing both digital and analog forms of a signal through the same probing path"
{{Patents|Les Larson}}
{{Patents|Les Larson}}


[[Category:Tektronix people]]
[[Category:Tektronix people]]

Latest revision as of 04:47, 12 October 2023

Lester L. Larson (? – ?) worked at Tektronix as a design engineer from the early 1960s through the 2000s.

He designed the 10A1.

He later worked on the 7000 series, including the 7904 and 7854. According to Barrie Gilbert in The Gears of Genius, Larson created the backplane design.

After that, he worked on the 11000 series.

Larson designed the SDI interface that allows 11000 series mainframes to control and test 11000 series plug-ins.

Documents Authored by Les Larson

Document Page Class Title Author(s) Year Refers to
Tekscope 1976 V8 N1.pdf 2 Article Delta Time Measurement for the 7000 Series Paul Farley • Les Larson • Bruce Hofer 1976 7B85 • 7B80 • DM40 • DM43

Products by Les Larson

Manufacturer Model Description Designers Introduced
Tektronix 10A1 Differential amplifier plug-in Les Larson 1965
Tektronix 7904 500 MHz non-storage mainframe Val Garuts • Thor Hallen • John McCormick • Les Larson • Bill DeVey • Bill Peek • Hans Springer • Joe Burger • Joel Swanno • Ken Hawken 1971
Tektronix 475 Portable 200 MHz dual-trace scope Leon Orchard • Luis Navarro • Bob Shand • Jim Hinze • Jim Godwin • Les Larson • Steve Tosh • Jim Woo • Ken Holland • Bill Mark • George Ermini • Dennis Braatz 1972
Tektronix R7903 500 MHz non-storage mainframe Val Garuts • Thor Hallen • John McCormick • Les Larson • Bill DeVey • Bill Peek • Hans Springer • Joe Burger • Joel Swanno • Ken Hawken 1974
Tektronix 7B80 400 MHz timebase Les Larson • Bruce Hofer • Paul Farley • Art Metz 1976
Tektronix 7B50A 100 MHz timebase Les Larson • Bruce Hofer • Paul Farley • Art Metz 1976
Tektronix 7B85 400 MHz delaying timebase Les Larson • Bruce Hofer • Paul Farley • Art Metz 1976
Tektronix 7B92A 500 MHz dual timebase Les Larson • Bruce Hofer 1976
Tektronix 475A Portable 250 MHz dual-trace scope Leon Orchard • Luis Navarro • Bob Shand • Jim Hinze • Jim Godwin • Les Larson • Steve Tosh • Jim Woo • Ken Holland • Bill Mark • George Ermini • Dennis Braatz 1977
Tektronix 7854 400 MHz waveform-processing scope Tom Rousseau • Les Larson • Jack Collins • Ellen Deleganes • Jim Schlegel • Gary Fladstol • Val Garuts • Tim Holte • Burt Johnson • Bruce Kingsland • Wes Kosta • Jim Tallman • Kirk Wimmer 1980

Components by Les Larson

Model Class Description Designers Used in
155-0009-00 Monolithic integrated circuit horizontal lockout logic Les Larson 7504 • 7514 • 7704 • 7704A • R7704 • 7834 • 7844 • 7854 • 7904 • R7903 • 7904A • 7934 • 7104
155-0010-00 Monolithic integrated circuit chop divider and blanking Les Larson 7504 • 7514 • 7704 • R7704 • 7704A • 7834 • 7854 • 7904 • R7903 • 7904A • 7934 • 7104
155-0011-00 Monolithic integrated circuit clock and chop blanking Les Larson 485 • 7313 • 7403N • R7403N • 7503 • 7504 • 7514 • 7603 • AN/USM-281C • 7613 • 7623 • 7623A • 7633 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • 7904 • 7904A • R7903 • R7912 • 7912AD • 7912HB • 7934 • 7104 • R7103 • AN/USM-281C
155-0012-00 Monolithic integrated circuit Z Axis Logic Les Larson 485 • 7504 • 7514 • 7704 • R7704 • 7704A • 7834 • 7844 • 7854 • 7904 • R7903 • 7904A • R7912 • 7934 • 7912AD • 7912HB • 7104 • R7103
155-0013-00 Monolithic integrated circuit horizontal chop and alt. binary Les Larson 7504 • 7514 • 7704 • R7704 • 7704A • 7834 • 7854 • 7904 • 7904A • R7903 • 7934 • 7104
155-0018-00 Monolithic integrated circuit zeros logic control Les Larson 7000 series readout system • 7934
155-0019-00 Monolithic integrated circuit decimal point and spacing control Les Larson 7000 series readout system
155-0020-00 Monolithic integrated circuit output assembler Les Larson 7000 series readout system
155-0021-00 Monolithic integrated circuit timing generator Les Larson 7000 series readout system • 7854 • 7934

Patents by Les Larson

Page Office Number Title Inventors Company Filing date Grant date
Patent US 3394316A US 3394316A Differential amplifier having common base output stage of very high output impedance Les Larson Tektronix Inc 1965-01-29 1968-07-23
Patent US 3663832A US 3663832A Delay pickoff circuit Bill DeVey • Les Larson Tektronix Inc 1971-03-17 1972-05-16
Patent US 3857059A US 3857059A Oscilloscope sweep system with two sweep generators having speed rate switches and sweep mode switches operated by a control knob Les Larson Tektronix Inc 1973-06-01 1974-12-24
Patent EP 0206518A3 EP 0206518A3 Vertical raster scan controller John D. Bowne • Les Larson Tektronix Inc 1986-05-21 1986-12-30
Patent US 6781391 US 6781391 Multi-channel, low input capacitance signal probe and probe head Gary W. Reed • J. Steve Lyford • Les Larson • William R. Mark Tektronix Inc 2001-12-12 2004-08-24
Patent US 6847199B2 US 6847199B2 Capturing both digital and analog forms of a signal through the same probing path Roy Kaufman • Gene Andrews • Colin L. Shepard • William R. Mark • Les Larson • Donald F. Murray Tektronix Inc 2003-02-11 2005-01-25
Patent US 2009125269 US 2009125269 Channel reconfigurable logic analyzer Ronald Arthur Acuff • Les Larson • Kevin E. Gosgrove Tektronix Inc 2008-10-15
Patent US 8103473B2 US 8103473B2 Test and measurement instrument and method of calibrating Ronald A. Acuff • Les Larson • Kevin E. Cosgrove Tektronix Inc 2008-10-15 2012-01-24
Patent US 2011074441 US 2011074441 Low Capacitance Signal Acquisition System Josiah A. Bartlett • Ira G. Pollock • Dan Knierim • Les Larson • Scott R. Jansen • Kenneth P. Dobyns • Michael Duane Stevens Tektronix Inc 2009-09-30
Patent US 2011074389 US 2011074389 Signal Acquisition System Having Probe Cable Termination in a Signal Processing Instrument Dan Knierim • Josiah A. Bartlett • Ira G. Pollock • Les Larson Tektronix Inc 2010-07-29
Patent US 2011074391 US 2011074391 Signal Acquisition System Having a Compensation Digital Filter Josiah A. Bartlett • Ira G. Pollock • Dan Knierim • Les Larson • Scott R. Jansen • Kenneth P. Dobyns • Michael Duane Stevens Tektronix Inc 2010-07-29
Patent US 2011074392 US 2011074392 Signal Acquisition System Having Reduced Probe Loading of a Device Under Test Josiah A. Bartlett • Ira G. Pollock • Dan Knierim • Les Larson • Scott R. Jansen • Kenneth P. Dobyns • Michael Duane Stevens Tektronix Inc 2010-07-29
Patent US 8436624B2 US 8436624B2 Signal acquisition system having reduced probe loading of a device under test Josiah A. Bartlett • Ira G. Pollock • Dan Knierim • Les Larson • Scott R. Jansen • Kenneth P. Dobyns • Michael Duane Stevens Tektronix Inc 2010-07-29 2013-05-07
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