3A1S: Difference between revisions
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|series=561S | |series=561S | ||
|type=3A1S | |type=3A1S | ||
|summary=25 MHz vertical amplifier | |summary=25 MHz vertical sampling amplifier plug-in | ||
|image=Tek 3a1s.jpg | |image=Tek 3a1s.jpg | ||
|caption=3A1S | |caption=Tektronix 3A1S | ||
|introduced=1961 | |introduced=1961 | ||
|discontinued=(?) | |discontinued=(?) | ||
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* [[Media:070-417.pdf|Tektronix 561S/3A1S/3B1S Manual 070-417]] | * [[Media:070-417.pdf|Tektronix 561S/3A1S/3B1S Manual 070-417]] | ||
}} | }} | ||
The '''Tektronix 3A1S''' is a | The '''Tektronix 3A1S''' is a Vertical Sampling Amplifier Plug-in for the [[561#561S|561S]]. | ||
It does not work in other 560-series mainframes. | It does not work in other 560-series mainframes. | ||
Latest revision as of 23:30, 28 November 2023
The Tektronix 3A1S is a Vertical Sampling Amplifier Plug-in for the 561S.
It does not work in other 560-series mainframes.
Key Specifications
| Deflection | from 10 mV/Div to 10 V/Div (in a 561S) |
|---|---|
| Bandwidth | 25 MHz |
| Rise time | 14 ns |
| Input impedance | 1 MΩ // 47 pF |
Internals
The input signal passes through a compensated attenuator switch and then into a 7586 cathode-follower biased with 2 mA plate current.
The gain stages use a mix of transistors and output stage driving the deflection plates is a transistor/pentode cascode circuit with T-coil loading.
The 3A1S is built in traditional ceramic-strip construction.
Pictures
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3A1S input amplifier and switching
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3A1S output amplifier
