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The '''Tektronix Type O''' is a [[letter-series and 1-series plug-ins|letter-series plug-in]] that contains two op-amps.
The '''Tektronix Type O''' is a [[letter-series and 1-series plug-ins|letter-series plug-in]], designed by [[Hiro Moriyasu]], that contains two op-amps and a vertical amplifier.
It was designed by [[Hiro Moriyasu]].
 
It was [[introduced in 1962|introduced in mid-1962]] and was available through 1973.
It was [[introduced in 1962|introduced in mid-1962]] and was available through 1973.


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There are sockets on the front panel for banana plugs.   
There are sockets on the front panel for banana plugs.   


Type O also has a regular signal input that does not involve the op-amps. 
A mode switch selects the display to be taken from either op-amp's output, or the vertical amplifier input.
A mode switch selects which op-amp's output will be displayed, or the regular signal input.


==Specifications==
{{BeginSpecs}}
Regular signal bandwidth is 25 MHz, maximum sensitivity is 50 mV/div, op-amp gain-bandwidth product is 15 MHz, and open-loop DC gain is 2500.
{{Spec | Bandwidth    | DC to 25 MHz (Vertical amplifier<sup>1</sup>) }}
{{Spec | Rise time    | 14 ns (Vertical amplifier <sup>1</sup>) }}
{{Spec | Deflection  | 50 mV/div to 10 V/div, 1–2–5, and variable (Vertical amplifier) }}
{{Spec | Input        | 1 MΩ // 47 pF (Vertical amplifier) }}
{{Spec | Opamp GBW    | 15 MHz }}
{{Spec | Opamp gain   | 2500 }}
{{Spec | Opamp output | ±50 V, ±5 mA; output impedance 30 Ω @ 1 MHz }}
{{Spec | Opamp noise  | typ. 0.5 mV<sub>p-p</sub> referred to the input }}
{{Spec | Internal Z  | input and feedback can be selected from 10 kΩ, 100 kΩ, 200 kΩ, 500 kΩ, 1 MΩ, or 10 pF to 1 μF in decade steps }}
{{EndSpecs}}
''Note 1: In 540- and 580-series scopes and 555''
<small>
===Accessories===
{{2ColBegin}}
* [[013-0049-01]] Standard Shielded Cover (two supplied with each plugin)
* [[013-0048-01]] Terminal Adapter Assembly (empty box for user chosen components)
* [[013-0081-00]] Compensating Adapter
* [[013-0068-00]] Gating Adapter
* [[013-0086-00]] Leakage Current Adapter
* [[013-0067-00]] Logarithmic Amplifier Adapter
* [[067-0507-00]] Grid Current Checker (calibration fixture)
{{2ColEnd}}
</small>


==Accessories==
==Prices==
:[[013-0049-01]] Standard Shielded Cover (two supplied with each plugin)
* $625 in 1971 ($4,700 in 2023 dollars)
:[[013-0048-01]] Terminal Adapter Assembly (empty box for user chosen components)
:[[013-0081-00]] Compensating Adapter
:[[013-0068-00]] Gating Adapter
:[[013-0086-00]] Leakage Current Adapter
:[[013-0067-00]] Logarithmic Amplifier Adapter


==Calibration Fixtures==
==Internals==
:[[067-0507-00]] Grid Current Checker
The opamps are implemented using two [[12AU6]] as a differential pair followed by two systems of a [[6DJ8]] as a bootstrapped cathode follower.


==Prices==
The vertical amplifier also starts with a 12AU6 differential pair, which is followed by a pair of [[2N1143]] 200 MHz transistors.
* $625 in 1971 ($4,200 in 2021 dollars)


==Pictures==
==Pictures==
<gallery>
<gallery>
Tek Type O front.jpg | Front view
Tek Type O front.jpg       | Front view
Type_o_front.jpg|Front view
Tek_Type_O_front_Peter.jpg | Front view
Type_o_top.jpg|Top view
Type_o_top.jpg             | Top view
Type_o_right.jpg|Right view
Type_o_right.jpg           | Right view
Type_o_left.jpg|Left view
Type_o_left.jpg           | Left view
Type-o.jpg
Type-o.jpg
Tek type o adp1.JPG
Tek type o adp1.JPG
Tek type o adp2.JPG
Tek type o adp2.JPG
Tek type o schem.png|Opamp Schematic
Tek type o preamp.png|Preamp Schematic
Tek o fr1.jpg
Tek o fr1.jpg
Tek o fr2.jpg
Tek o fr2.jpg
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</gallery>
</gallery>


'''Schematics'''
<gallery>
Tek type o schem.png|Opamp Schematic
Tek type o preamp.png|Preamp Schematic
</gallery>
==Components==
{{Parts|O}}
{{Parts|O}}


[[Category:500 series plugins]]
[[Category:500 series plugins]]

Revision as of 06:44, 28 November 2023

Tektronix Type O
Dual opamp plugin
Type O front view

Compatible with 500-series scopes

Produced from 1962 to 1974

Manuals
Manuals – Specifications – Links – Pictures

The Tektronix Type O is a letter-series plug-in, designed by Hiro Moriyasu, that contains two op-amps and a vertical amplifier.

It was introduced in mid-1962 and was available through 1973.

The input and feedback networks of the op-amps can be configured from the front panel using knobs and/or user-supplied components. There are sockets on the front panel for banana plugs.

A mode switch selects the display to be taken from either op-amp's output, or the vertical amplifier input.

Key Specifications

Bandwidth DC to 25 MHz (Vertical amplifier1)
Rise time 14 ns (Vertical amplifier 1)
Deflection 50 mV/div to 10 V/div, 1–2–5, and variable (Vertical amplifier)
Input 1 MΩ // 47 pF (Vertical amplifier)
Opamp GBW 15 MHz
Opamp gain 2500
Opamp output ±50 V, ±5 mA; output impedance 30 Ω @ 1 MHz
Opamp noise typ. 0.5 mVp-p referred to the input
Internal Z input and feedback can be selected from 10 kΩ, 100 kΩ, 200 kΩ, 500 kΩ, 1 MΩ, or 10 pF to 1 μF in decade steps

Note 1: In 540- and 580-series scopes and 555

Accessories

Prices

  • $625 in 1971 ($4,700 in 2023 dollars)

Internals

The opamps are implemented using two 12AU6 as a differential pair followed by two systems of a 6DJ8 as a bootstrapped cathode follower.

The vertical amplifier also starts with a 12AU6 differential pair, which is followed by a pair of 2N1143 200 MHz transistors.

Pictures

Schematics

Components

Some Parts Used in the O

Part Part Number(s) Class Description Used in
12AU6 154-0040-00 Vacuum Tube (Pentode) RF pentode 81 112 1L10 1L20 1L60 3L10 512 556 575 545 547 549 581 585 A B C G K H L ML M N O R S Z
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
8426 Vacuum Tube (Pentode) RF pentode O 545A 547 549 581A 585A