3A1: Difference between revisions

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{{Plugin Sidebar|
{{Plugin Sidebar
manufacturer=Tektronix |series=560-series scopes |type=3A1 |
|manufacturer=Tektronix
summary=Dual trace amplifier plugin |
|series=560-series scopes
image=3a1 front2.jpg |  
|type=3A1
caption=Type 3A1 front view |
|summary=10 MHz dual-trace amplifier plug-in
designers=  |
|image=Tek 3a1 front.jpeg
introduced=1962 |
|caption=Type 3A1 front view
discontinued=1968 |
|introduced=1962  
manuals=
|discontinued=1968
* [[Media:070-343.pdf|Tektronix 3A1 Manual 070-343]] (PDF)
|manuals=
* [[Media:070-0343-01.pdf|Tektronix 3A1 Manual 070-0343-01]] (PDF)
* [[Media:070-343.pdf|Tektronix 3A1 Manual 070-343]]
* [http://bama.edebris.com/download/tek/3a1/3a1.djvu Tektronix 3A1 Manual @ BAMA] (DJVU)
* [[Media:070-0343-01.pdf|Tektronix 3A1 Manual 070-0343-01]]
* [https://bama.edebris.com/download/tek/3a1/3a1.djvu Tektronix 3A1 Manual] (DjVu @ BAMA)
* [[Media:Tek 3a1 fcp nov 1963.pdf|Tektronix 3A1 Factory Calibration Procedure, November 1963‎]]
* [[Media:Tek 3a1 fcp nov 1963.pdf|Tektronix 3A1 Factory Calibration Procedure, November 1963‎]]
}}
}}
The '''Tektronix Type 3A1''' is a 10 MHz dual-trace amplifier plug-in for [[560-series scopes]], [[introduced in 1962]].
The '''Tektronix 3A1''' is a 10 MHz dual-trace amplifier plug-in for [[560-series scopes]], [[introduced in 1962]]. It is compatible with all the scopes in the 560 series, other than the [[560]] itself, and also with the [[129]] four bay enclosure and power supply.


{{BeginSpecs}}
{{BeginSpecs}}
{{Spec | Bandwidth | 10 MHz }}
{{Spec | Bandwidth       | 10 MHz }}
{{Spec | Risetime | 35 ns }}
{{Spec | Risetime       | 35 ns }}
{{Spec | Deflection      | 10 mV/div to 10 V/div, 1−2−5 sequence}}
{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{Spec | Deflection factor | 10 mV/div to 10 V/div, 1−2−5 sequence}}
{{EndSpecs}}
{{EndSpecs}}
==Links==
{{Documents|Link=3A1}}


==Internals==
==Internals==


The input signal passes through compensated attenuators and then into a  
The input signal passes through compensated attenuators and then into a cathode-follower stage made of two [[7586]] Nuvistor tubes.   
cathode-follower stage made of two [[7586]] Nuvistor tubes.   


Channel switching in ALTERNATE mode is done using diodes.
Channel switching in ALTERNATE mode is done using diodes.
The output stage that drives the vertical deflection plates of the scope uses
The output stage that drives the vertical deflection plates of the scope uses a pair of [[8233]] frame grid power pentode tubes.
a pair of [[8233]] frame grid power pentode tubes.
 
Tektronix added a 260 ns delay line to the 3A1 to make the [[3A6]].


==Pictures==
==Pictures==
<gallery>
<gallery>
3a1 front2.jpg |Front view
3a1 front2.jpg |3A1 Front
3a1 right2.jpg | Right side
3a1 right2.jpg |3A1 Right
3a1 right.jpg | Right side
3a1 right.jpg |3A1 Right
3a1 top.jpg | Top view
3a1 top.jpg |3A1 Top
3a1 bottom.jpg | Bottom view
3a1 bottom.jpg |3A1 Bottom
3a1 input amp and switching.png|input amplifier schematic
3a1 input amp and switching.png|3A1 Input Amplifier Schematic
</gallery>
</gallery>
==Components==
{{Parts|3A1}}


[[Category:560 series plugins]]
[[Category:560 series plugins]]