3A1: Difference between revisions

From TekWiki
Jump to navigation Jump to search
(creation)
 
No edit summary
(18 intermediate revisions by 3 users not shown)
Line 1: Line 1:
The Tektronix Type 3A1 is a dual-trace amplifier plug-in introduced in 1963 for 560-series
{{Plugin Sidebar|
oscilloscopes.  Bandwidth is 10MHz (35 nanosecond risetime). The input impedance is 47pF.
manufacturer=Tektronix |series=560-series scopes |type=3A1 |
Deflection factor ranges from 10mV/div to 10V/divThe input signal passes through
summary=Dual trace amplifier plugin |
compensated attenuators and then into a cathode-follower stage made of two 7586 Nuvistor
image=3a1 front2.jpg |
tubes.  Channel switching in ALTERNATE mode is done using diodes. The output stage that
caption=Type 3A1 front view |
drives the vertical deflection plates of the scope uses a pair of 8233 frame grid power
designers=  |
pentode tubes.
introduced=1962 |
discontinued=1968 |
manuals=
* [[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 10 MHz dual-trace amplifier plug-in for [[560-series scopes]],  [[introduced in 1962]].
 
{{BeginSpecs}}
{{Spec | Bandwidth | 10 MHz }}
{{Spec | Risetime | 35 ns }}
{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{Spec | Deflection factor | 10 mV/div to 10 V/div, 1−2−5 sequence}}
{{EndSpecs}}
 
==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==
 
<gallery>
3a1 front2.jpg |Front view
3a1 right2.jpg | Right side
3a1 right.jpg | Right side
3a1 top.jpg | Top view
3a1 bottom.jpg | Bottom view
3a1 input amp and switching.png|input amplifier schematic
</gallery>
 
[[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