Al Zimmerman

Henry Allen “Al” Zimmerman (b. August 5, 1937 in Sabetha, KS – ?) got his BS in Electrical Engineering from Harvard in 1959 and MS in Electrical Engineering from UC Berkeley in 1961. He started at Tektronix in July 1961. He led the Sampling Group at Tektronix starting in the early 1960s.

Personal

Al Zimmerman was married to Emily Jo Berry and they had three kids: Berry in 1958, Bruce in 1960, and JoLynne in 1964. They divorced around 1983. He remarried Eileen Harrington in 1986. They divorced around 1997. He remarried Lila Lee around 1999. They divorced around 2010.

Tektronix

As of October 1963, Al Zimmerman's Sampling Group included:

Al Zimmerman, Project Manager
- George Frye, Project Engineer
  - Andy Chears, Jim Geddes, Leo Heineck, Fred Kawabata
- Ray Underwood, Project Engineer
  - Gene Cowan, Chuck Donaldson, Chuck Edgar, Stu McNaughton

Links

Products by Al Zimmerman

Manufacturer	Model	Description	Designers	Introduced
Tektronix	7T11	Sampling Sweep Unit	George Frye • Al Zimmerman • Gene Cowan	1969
Tektronix	7S11	Sampling plugin	George Frye • Al Zimmerman • Gene Cowan	1969
Tektronix	7T11A	Sampling Sweep Unit	George Frye • Al Zimmerman • Gene Cowan	1986

Components by Al Zimmerman

Patents by Henry A Zimmerman

Page	Office	Number	Title	Inventors	Company	Filing date	Grant date
Patent US 3359429A	US	3359429A	Trigger generator circuit having synchronized astable input oscillator	Henry A Zimmerman	Tektronix Inc	1964-03-23	1967-12-19
Patent US 3350576A	US	3350576A	Trigger countdown circuit which is armed and triggered by different portions of the same trigger pulse	Henry A Zimmerman	Tektronix Inc	1965-01-29	1967-10-31
Patent US 3558930A	US	3558930A	Jitter-free triggering method and apparatus	Jim Knapton • Henry A Zimmerman	Tektronix Inc	1968-03-15	1971-01-26
Patent US 3771056A	US	3771056A	Display baseline stabilization circuit	Henry A Zimmerman	Tektronix Inc	1971-07-30	1973-11-06

Documents Authored by Al Zimmerman

Document	Page	Class	Title	Author(s)	Year	Refers to
Service Scope 46 Oct 1967.pdf	7	Article	Random Sampling - A New Way of Fast Pulse Display	Al Zimmerman	1967	3T2
Service Scope 52 Oct 1968.pdf	2	Article	The State of the Art in Sampling	Al Zimmerman	1968	S-1 • S-2 • S-3 • S-4 • S-50 • S-51 • 285 • 3S1 • 3S2 • 3S5 • 3S6 • 3T2 • 3T5 • 3T6 • 3T77A • 568 • 230
Tekscope 1970 V2 N1 Feb 1970.pdf	2	Article	Measuring Jitter with a Sampling Oscilloscope	Al Zimmerman	1970	Sampling • 7T11 • 7S11