Oscilloscope Tektronix 511

Tektronix; Portland, OR

  • Year
  • 1947
  • Category
  • Service- or Lab Equipment
  • Radiomuseum.org ID
  • 126501

Click on the schematic thumbnail to request the schematic as a free document.

 Technical Specifications

  • Number of Tubes
  • 0
  • Power type and voltage
  • Alternating Current supply (AC) / 105-125 Volt
  • Material
  • Metal case
  • from Radiomuseum.org
  • Model: Oscilloscope Tektronix 511 - Tektronix; Portland, OR
  • Shape
  • Tablemodel, high profile (upright - NOT Cathedral nor decorative).
  • Dimensions (WHD)
  • 12.5 x 15.5 x 21.5 inch / 318 x 394 x 546 mm
  • Notes
  • The Tektronix 511 is the first product of this company, based on the patent for the trigger which revolutioned the former Oscillograph. The oscilloscopes became a much more useful tool in 1946 when Howard C. Vollum and Jack Murdock invented the triggered oscilloscope and in 1947 built the Tektonix Model 511. By doing that the very small Tektronix managed to match the previous oscilloscope leader, DuMont Laboratories, by 1954 in a growing market. DuMont was started in 1931.

    The first oscilloscopes traced the input voltage's waveform. It would start a horizontal trace when the input voltage exceeded an adjustable threshold. Triggering allows stationary display of a repeating waveform, as multiple repetitions of the waveform are drawn over the exact same trace on the phosphor screen. Without triggering, multiple copies of the waveform are drawn in different places, giving an incoherent jumble or a moving image on the screen. The trigger invention transformed the Oscillograph to a Oscilloscope. The idea of the trigger was late and still revolutionary and made Tektronix the leading company for such instruments. In 1956 the HP 130A was the first oscilloscope made by Hewlett-Packard CRT: 5CP1A, 5", 3kV accelerating voltage.
  • Net weight (2.2 lb = 1 kg)
  • 23.140 kg / 50 lb 15.5 oz (50.969 lb)
  • Author
  • Model page created by Ernst Erb. See "Data change" for further contributors.

 Collections | Museums | Literature


The model Oscilloscope can be seen in the following museums.


The model Oscilloscope is documented in the following literature.


Forum contributions about this model: Tektronix; Portland,: Oscilloscope Tektronix 511

Threads: 1 | Posts: 1


In July of 1947 Tektronix shipped its first production oscilloscope—a Type 511, serial number 101. Dr. A. R. Tunturi; Director of Navy Acoustic Research at the University of Oregon Medical School in Portland, Oregon, took delivery on this instrument for the purchaser, the U. S. Navy.

For 13 1/2 years this Type 511 aided in providing Dr. Tunturi with reliable Information in his research work - electronic mapping of the brain. Knowledge gained in this research is valuable in the diagnosis and treatment of neurological diseases and for the possible importance of applying how the brain works to the development of a mechanical brain for guided missiles. During this time installation of several factory-developed improvement modifications aided this Type 511 to keep abreast of Dr. Tunturi's oscilloscope requirements. The instrument remained, however, essentially a Type 511 while Dr. Tunturi's work continued to advance. Eventually the need for a more sophisticated oscilloscope became undeniable.

Rudy Vuksich of the Tektronix Advertising Department could see reciprocal benefits in Dr. Tunturi's need for a more advanced oscilloscope and the Tektronix desire to return their original production instrument to its place of origin.

Accordingly, he assisted in working out a mutually beneficial agreement between the interested parties. In exchange for the Type 511, serial number 101, Dr. Tunturi accepted for the U. S. Navy a Tektronix Type 515 Oscilloscope, an instrument admirably suited to his present oscilloscope requirements.

Type 511, serial number 101 now stands proudly on display in the reception area of the Tektronix factory in Beaverton, Oregon. Every Tektronix employee expresses his thanks to the U. S. Navy and Dr. Tunturi for their co-operation in returning this instrument to us. We are proud of our "first born"!

Source: ServiceScope Feb 1961


Pius Steiner, 19.Jul.11

Weitere Posts (1) zu diesem Thema.