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Re: 11801C and the T1331 error: lost factory TB calibration data.
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Hi Leo,
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The S-4 and S-6 were designed by George Fry. They were a radical departure from the previous, much slower sampling heads. I once asked George why they were faster and he said it was because he saw the problem in terms of a wave front moving through the sampling gates. George is alive and well. He sells custom hearing aids in the Portland area. A few years ago I visited Agoston Agoston in Beaverton. I'm not sure when he left Tek but I don't believe he designed the newer heads for the 11K series. Right after he left Tek he formed HyperLabs and produced a series of sampling plugins that are the same form factor as the S series plugins. That's why I don't think he ever designed anything for the 11K series. His S series heads had better specs than the Tek heads. Here are the plugins HyperLabs made: HL-11 100 pS 50? BNC SAMPLING HEAD HL-12 100 pS 10 K? BNC SAMPLING HEAD HL-13 20 pS 50?, K (SMA), SAMPLING HEAD HL-14 <35 pS 50?, K (SMA), TDR HEAD HL-15 25 pS PHOTONICS HEAD HL-16 25 pS, 50?, K (SMA), PULSE GENERATOR HEAD Hyperlabs is still in business. You can read about what they are up to at I have datasheets somewhere for each of these sampling heads but I never saw a price list so I have no idea how much they sold for. In 20 years searching for them on eBay I have never come across any of them. When I was at his house we did not discuss the sampling heads. His company is now making TDR based systems that test and characterize the performance of extremely fast cables. His wife worked at Tek at the time of my visit. Dennis Tillman W7PF -----Original Message-----
From: [email protected] [mailto:[email protected]] On Behalf Of Leo Bodnar Sent: Saturday, August 24, 2019 3:47 PM On Sat, Aug 24, 2019 at 05:06 PM, Reginald Beardsley wrote: I'd love to know who designed it and whether they are still alive.I think most heads were designed by Agoston Agoston. Other than that: ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ This product was made possible by the dedicated efforts of a group of inspired, tireless, and often times ingenious individuals of the design team. The following is a list of a few of the cast of many that contributed to the development of this oscilloscope. Design Team: Mark Anderson Brian Colony John DeLacy Rob DeVoe Jim Edwards Larry Hattery Tim Holte Roy Kaufman Jim Lamb Les Larson Chan Lee Jim Long Ben McCarroll Clark Morgan Jim Peterson Jim Schlegel Bob Simpson Ken Smith David White Wayne Wilburn Contributing Engineers: Ray Blohm Thomas Dye Scott Halsted Ron Henricksen Steve Herring Bev Kramlich Mehrab Sedeh Jim Stanley Gil Stephens Engineering Support: Bob Chandler Hilde Cochran John Eskeldson Pam Fodrea Lorna Goedel Dick Griffin John Hazard Diane Kemper Beverly McClenathan Jerry Sternes Wally Sutton Pat Wiley Manuals: Brian Diehm Amy Farrell Susan Grace Julie Leonetti Krystn McCaleb Chuck Melikian Roland Parenteau David Powe Mark Stade Carolyn Strong Manufacturing: Tim Bennington-Davis Donna Brown Jerry Brucken Kevin Cosgrove Lew Cummings Jeanne Eick Jerry Feickert Berdine Garner Clark Jarvis Paulette Jesse Murlan Kaufman Phil Lloyd Woody Ngincharoen Tina Noll Howard Nutt Carol Parks Al Phillips Steve Ratner Doug Rowe Bill Schell Colleen Swanson Mark Swenson Ron Tegner Rod Van Loon Walt Ventgen Marketing/Service: Denny Chamberlin Roger Ensrud Tom Freeman Theresa Graf Ivan Jackson Dennis Kucera Paul Kristof Ray Blohm John Boatwright Betty Bonham Bob Bousquet Jim Carter Dennis Chamberlin Jo Chi John Cooper Jerry Coulter Connie DeClerck Laszlo Dobos Tom Dye Brad Figg Dean Gehnert Ted Gerlinger Larry Hershiser Ken Holland Will Hott Shirley Humphreys David Irwin Stan Kaveckis Ray Kazlauskas Hedy Leidelmeyer Roy Lewallen Ken Longgrear Tina Newkirk Reba Norris Oris Nussbaum Mike O'Shanecy Janet Peters Barbara Ports V. Prasannan Mary Rehse John Rettig Glen Rollins Ava Stupek Dan Taylor Erik Teose Mark Tilden Jan Todd Harold Vandecoevering Mona Webber Vaughn Weidel Bob Windham -- Dennis Tillman W7PF TekScopes Moderator |
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