3A1: Difference between revisions

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{{Plugin Sidebar 2|
{{Plugin Sidebar|
title=Tektronix Type 3A1 |
manufacturer=Tektronix |series=560-series scopes |type=3A1 |
summary=Dual trace amplifier plugin |
summary=Dual trace amplifier plugin |
image=3a1 front2.jpg |  
image=3a1 front2.jpg |  
caption=Type 3A1 front view |
caption=Type 3A1 front view |
series=[[560-series scopes]] |
designers= |
introduced=1962 |
introduced=1962 |
discontinued=1968 |
discontinued=1968 |
manuals=
manuals=
* [http://bama.edebris.com/download/tek/3a1/3a1.djvu Tektronix 3A1 Manual (DJVU)]
* [[Media:070-343.pdf|Tektronix 3A1 Manual 070-343]] (PDF)
* [[Media:070-0343-01.pdf|Tektronix 3A1 Manual 070-0343-01]] (PDF)
* [http://bama.edebris.com/download/tek/3a1/3a1.djvu Tektronix 3A1 Manual @ BAMA] (DJVU)
* [[Media:Tek 3a1 fcp nov 1963.pdf|Tektronix 3A1 Factory Calibration Procedure, November 1963‎]]
}}
}}
The '''Tektronix Type 3A1''' is a dual-trace amplifier plug-in [[introduced in 1962]]
The '''Tektronix Type 3A1''' is a 10 MHz dual-trace amplifier plug-in for [[560-series scopes]],  [[introduced in 1962]].
for [[560-series scopes]].


{{BeginSpecs}}
{{BeginSpecs}}
Line 17: Line 19:
{{Spec | Risetime  | 35 ns }}
{{Spec | Risetime  | 35 ns }}
{{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}}
{{Spec | Deflection factor | 10 mV/div to 10 V/div, 1−2−5 sequence}}
{{EndSpecs}}
{{EndSpecs}}


Line 25: Line 27:
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. The output stage that
Channel switching in ALTERNATE mode is done using diodes.
drives the vertical deflection plates of the scope uses a pair of [[8233]]  
The output stage that drives the vertical deflection plates of the scope uses
frame grid power pentode tubes.
a pair of [[8233]] frame grid power pentode tubes.


==Pictures==
==Pictures==


<gallery>
<gallery>
File:3a1 front2.jpg |Front view
3a1 front2.jpg |Front view
File:3a1 right2.jpg | Right side
3a1 right2.jpg | Right side
File:3a1 right.jpg | Right side
3a1 right.jpg | Right side
File:3a1 top.jpg | Top view  
3a1 top.jpg | Top view  
File:3a1 bottom.jpg | Bottom view
3a1 bottom.jpg | Bottom view
File:3a1 input amp and switching.png|input amplifier schematic
3a1 input amp and switching.png|input amplifier schematic
</gallery>
</gallery>


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

Revision as of 10:00, 20 August 2021

Tektronix 3A1
Dual trace amplifier plugin
Type 3A1 front view

Compatible with 560-series scopes

Produced from 1962 to 1968

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix Type 3A1 is a 10 MHz dual-trace amplifier plug-in for 560-series scopes, introduced in 1962.

Key Specifications

Bandwidth 10 MHz
Risetime 35 ns
Input impedance 1 MΩ // 47 pF
Deflection factor 10 mV/div to 10 V/div, 1−2−5 sequence

Internals

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

Channel switching in ALTERNATE mode is done using diodes. The output stage that drives the vertical deflection plates of the scope uses a pair of 8233 frame grid power pentode tubes.

Pictures