3A1S: Difference between revisions
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{{Plugin Sidebar | {{Plugin Sidebar | ||
|manufacturer=Tektronix | |||
summary=25 MHz vertical amplifier| | |series=561S | ||
image=Tek 3a1s.jpg | | |type=3A1S | ||
caption=3A1S | |summary=25 MHz vertical sampling amplifier plug-in | ||
introduced=1961 | | |image=Tek 3a1s.jpg | ||
discontinued=(?) | |caption=Tektronix 3A1S | ||
|introduced=1961 | |||
manuals= | |discontinued=(?) | ||
[[ | |manuals= | ||
* [[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. | |||
{{BeginSpecs}} | {{BeginSpecs}} | ||
| Line 20: | Line 23: | ||
==Internals== | ==Internals== | ||
The input signal passes through a compensated attenuator switch and | The input signal passes through a compensated attenuator switch and then into a [[7586]] cathode-follower biased with 2 mA plate current. | ||
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 | 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. | ||
deflection plates is a transistor/pentode cascode circuit with T- | |||
The 3A1S is built in traditional ceramic-strip construction. | The 3A1S is built in traditional ceramic-strip construction. | ||
| Line 30: | Line 31: | ||
==Pictures== | ==Pictures== | ||
<gallery> | <gallery> | ||
Tek 3a1s.jpg | |||
Tek 3a1s left.jpg | |||
Tek 3a1s right.jpg | |||
Tek-561s vert1.png|3A1S input amplifier and switching | |||
Tek-561s vert2.png|3A1S output amplifier | |||
</gallery> | </gallery> | ||
==Components== | |||
{{Parts|3A1S}} | |||
[[Category:560 series plugins]] | [[Category:560 series plugins]] | ||
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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-
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3A1S input amplifier and switching
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3A1S output amplifier
