Les Larson

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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.

Products by Les Larson

Model Class Description Designers Introduced
10A1 Plug-in Differential amplifier plug-in Les Larson 1965
7904 Oscilloscope 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
7B92 Plug-in 500 MHz Dual Timebase Bill DeVey Les Larson Val Garuts 1971
475 Oscilloscope 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
7854 Oscilloscope 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 7844 7834 7854 7904 R7903 7904A 7934 7104
155-0010-00 Monolithic integrated circuit chop divider and blanking Les Larson 7504 7514 7704 7704A 7834 7854 7904 R7903 7904A 7934
155-0011-00 Monolithic integrated circuit clock and chop blanking Les Larson 485 4851 4852 7313 7403N 7503 7504 7514 7603 7613 7623 7633 7704 7704A 7834 7844 7854 7904 7904A R7903 R7912 7912AD 7912HB 7934 7104
155-0012-00 Monolithic integrated circuit Z Axis Logic Les Larson 485 4851 4852 7504 7514 7704 7704A 7834 7844 7854 7904 R7903 7904A R7912 7934 7912AD 7912HB 7104
155-0013-00 Monolithic integrated circuit horizontal chop and alt. binary Les Larson 7504 7514 7704 7704A 7834 7854 7904 7904A R7903 7934 7104
155-0018-00 Monolithic integrated circuit zeros logic control Les Larson 7000 series readout system
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

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 A. Roy Kaufman Roland E. 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 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 8436624 US 8436624 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