The initial design work on the 3S76 was done by Cliff Moulton. It was called the Type 76, later renamed 3S76 before going into production. A decision was made to demonstrate the 76/3S76 at the 1961 IRE show. This created a panic because the plug-in was not complete. The 76 project landed in the TV group. Ron Olson and Charlie Rhodes were designing it and Walt Lowy was a technician. Phil Crosby worked in it for a week during spring break from Portland State (college then, not university). Phil Crosby designed the channel switching circuitry.
|Rise time||< 400 ps|
|Input impedance||50 Ω|
|Triggering||Internal trigger take-off, 55 ns delay line|
Each input has a trigger takeoff transformer and a 55 ns coaxial delay line. The trigger source channel is selectable.
Each delay line terminates at that channel's sampling bridge, which is a four-diode design using beam-lead GaAs diodes.