3A2: Difference between revisions

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{{Plugin Sidebar 2|
{{Plugin Sidebar
title=Tektronix Type 3A2 |
|manufacturer=Tektronix
summary=Dual trace amplifier plugin |
|series=560-series scopes
image=3a2 front.jpg |  
|type=3A2
caption=Type 3A2 front view |
|summary=500 kHz dual-trace amplifier plug-in
series=[[560-series scopes]] |
|image=Tek 3a2 front.jpeg
introduced=1964 |
|caption=Type 3A2 Front View
discontinued=1974 |
|introduced=1964
manuals=
|discontinued=1974
* [http://w140.com/mmm/tek-3a2.pdf Tektronix 3A2 Manual (PDF)]
|manuals=
* [http://bama.edebris.com/download/tek/3a2/3a2.djvu Tektronix 3A2 Manual (DjVu)]
* [[Media:070-354.pdf|Tektronix 3A2 Manual]]
<small>
'''Alternate copy'''
* [https://bama.edebris.com/download/tek/3a2/3a2.djvu Tektronix 3A2 manual] (DjVu @ BAMA)
</small>
}}
}}
The '''Tektronix Type 3A2''' is a dual-trace amplifier plug-in [[introduced in 1963]] for [[560-series scopes]].
The '''Tektronix 3A2''' is a 500 kHz dual-trace amplifier plug-in [[introduced in 1963]] for [[560-series scopes]].
It was designed for compatibility with the digital unit in the [[567]], e.g, the [[6R1]] or [[6R1A]].
It was designed for compatibility with the digital unit in the [[567]], e.g, the [[6R1]] or [[6R1A]].


Line 17: Line 21:
{{Spec | Bandwidth | 500 kHz }}
{{Spec | Bandwidth | 500 kHz }}
{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{Spec | Input impedance | 1 MΩ // 47 pF }}
{{Spec | Deflection factor | 10 mV/div to 25 V/div }}
{{Spec | Deflection   | 10 mV/div to 25 V/div }}
{{EndSpecs}}
{{EndSpecs}}
==Links==
{{Documents|Link=3A2}}


==Internals==
==Internals==
Line 25: Line 32:
Channel switching in ALTERNATE mode is done using diodes.  The output stage that
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 [[6BA8]] pentodes.
drives the vertical deflection plates of the scope uses a pair of [[6BA8]] pentodes.
The "CHOP" mode of the 3A2 switches back and forth between the two inputs
at a rate of a few kilohertz.
The signal that causes the switching is generated by a relaxation oscillator
formed using a capacitor and a pair of [[152-108]] [[Shockley diode]]s, D385 and D386.


==Pictures==
==Pictures==
<gallery>
<gallery>
3a2 front.jpg
3a2 front.jpg | 3A2 Front
3a2 left.jpg
3a2 left.jpg | 3A2 Left
3a2 right.jpg
3a2 right.jpg | 3A2 Right
3a2 top.jpg
3a2 top.jpg | 3A2 Top
3a2 bottom.jpg
3a2 bottom.jpg | 3A2 Bottom
Tek 3a2 ch1 input.png|Channel 1 Input Amp
Tek 3a2 ch1 input.png|3A2 Channel 1 Input Amp
Tek 3a2 ch2 input.png|Channel 2 Input Amp
Tek 3a2 ch2 input.png|3A2 Channel 2 Input Amp
Tek 3a2 switching and output.png|Switching and Output Amp
Tek 3a2 switching and output.png|3A2 Switching and Output Amp
Tek 3a2 attenuator switches.png|Attenuator Switches
Tek 3a2 attenuator switches.png|3A2 Attenuator Switches
</gallery>
</gallery>
==Components==
{{Parts|3A2}}


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

Latest revision as of 04:47, 29 November 2023

Tektronix 3A2
500 kHz dual-trace amplifier plug-in
Type 3A2 Front View

Compatible with 560-series scopes

Produced from 1964 to 1974

Manuals

Alternate copy

(All manuals in PDF format unless noted otherwise)
Manuals – Specifications – Links – Pictures

The Tektronix 3A2 is a 500 kHz dual-trace amplifier plug-in introduced in 1963 for 560-series scopes. It was designed for compatibility with the digital unit in the 567, e.g, the 6R1 or 6R1A.

Key Specifications

Bandwidth 500 kHz
Input impedance 1 MΩ // 47 pF
Deflection 10 mV/div to 25 V/div

Links

Documents Referencing 3A2

(no results)

Internals

The input signal passes through compensated attenuators and then into a 12AT7 cathode-follower stage. 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 6BA8 pentodes.

The "CHOP" mode of the 3A2 switches back and forth between the two inputs at a rate of a few kilohertz. The signal that causes the switching is generated by a relaxation oscillator formed using a capacitor and a pair of 152-108 Shockley diodes, D385 and D386.

Pictures

  • 3A2 Front

    3A2 Front

  • 3A2 Left

    3A2 Left

  • 3A2 Right

    3A2 Right

  • 3A2 Top

    3A2 Top

  • 3A2 Bottom

    3A2 Bottom

  • 3A2 Channel 1 Input Amp

    3A2 Channel 1 Input Amp

  • 3A2 Channel 2 Input Amp

    3A2 Channel 2 Input Amp

  • 3A2 Switching and Output Amp

    3A2 Switching and Output Amp

  • 3A2 Attenuator Switches

    3A2 Attenuator Switches

Components

Some Parts Used in the 3A2

Part Part Number(s) Class Description Used in
12AL5 154-0038-00 Vacuum Tube (Double Diode) high-perveance dual diode 3A2 • 3B2 • 545 • 545A • 549 • N
12AT7 154-0039-00 Vacuum Tube (Dual Triode) dual high-gain triode 161 • 180 • 310 • 310A • 315 • 316 • 360 • 502 • 502A • 511A • 512 • 513 • 513D • 514 • 514AD • 514D • 516 • 524 • 529 • RM529 • 544 • 546 • 547 • 556 • 565 • 570 • 3A2 • 75 • 3A75 • 1M1 • A • B • C • G • H • K • L • ML • M • N • K • R • S • Z • Keithley 610B
4E50-28 152-108 • 152-0108-00 Discrete component Shockley diode (four-layer diode) 3A2
6BA8 154-0163-00 Vacuum Tube (Triode/Pentode) triode-pentode combo 59 • 2A61 • 72 • 3A72 • 3A2
6DJ8 154-0187-00 • 154-0305-00 Vacuum Tube (Dual Triode) dual triode 067-506 • 111 • 132 • 161 • 310A • 316 • 317 • 502 • 502A • 503 • 504 • 506 • 515 • 516 • 519 • 526 • 529 • RM529 • 533 • 535 • 536 • 543 • 544 • 545 • 545A • 545B • 546 • 547 • 549 • 555 • 556 • 561A • 561S • 564 • 565 • 567 • 581 • 581A • 585 • 585A • 661 • 1A4 • 1S1 • 60 • 2A60 • 63 • 2A63 • 67 • 2B67 • 3A1 • 3A1S • 3A2 • 3A3 • 3A6 • 3A7 • 72 • 3A72 • 75 • 3A75 • 4S2 • 51 • 3B1 • 3B1S • 3B2 • 3B3 • 3B4 • 3M1 • 3S76 • 3T77 • 3T77A • 9A1 • 9A2 • 1121 • 80 • 81 • 82 • 86 • B • O • W • Z • Telequipment D56 • Telequipment S32A • Telequipment D52 • S-311 • Telequipment TD51 • Telequipment S52 • Telequipment S51 • Telequipment Type A • TU-4
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