3A1S: Difference between revisions

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discontinued=(?) |
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series=[[560-series scopes]]|
series=[[560-series scopes]]|
manuals=
manuals=* [http://w140.com/tek-561s.pdf Tektronix 561S / 3A1S / 3B1S Manual (PDF)]
[[Category:Manual needed]]
 
}}
}}
The '''Tektronix 3A1S''' is a vertical plug-in for the [[561#561S|561S]].
The '''Tektronix 3A1S''' is a vertical plug-in for the [[561#561S|561S]].
The input signal passes through a compensated attenuator switch and
then into a [[7586]] cathode-follower biased with 2 mA plate current.


{{BeginSpecs}}
{{BeginSpecs}}
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{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{EndSpecs}}
{{EndSpecs}}
==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==
==Pictures==

Revision as of 17:43, 19 April 2016

Template:Plugin Sidebar 2 The Tektronix 3A1S is a vertical plug-in for the 561S.

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