3A1S
The Tektronix 3A1S is a vertical plug-in for the 561S.
The input signal passes through a compensated attenuator switch and then into a 7586 cathode-follower biased with 2 mA plate current.
Specifications
- Deflection: in a 561S, from 10 mV/Div to 10 V/Div
- Rise time: 14 ns
- Bandwidth: 25 MHz
- Input impedance: 1 MΩ || 47 pF
Pictures
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3A1S input amplifier and switching
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3A1S output amplifier
