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Actually, there never was a Type C, but that name is sometimes
{{Plugin Sidebar
used as shorthand for the official "Type 53C" and "Type 53/54C" nomenclatures.
|manufacturer=Tektronix
|type=Type (53)C
|summary=Dual-trace 8.5 (24) MHz amplifier
|image=Tek 53 54 c.jpeg
|caption=Tektronix Type 53/54C
|series=500-series scopes
|introduced=1954
|discontinued=1959
|manuals=
* [[Media:IM-53-54C.pdf|Tektronix Type 53/54C Manual]] (OCR)
* [[Media:tek_type_c_fcp.pdf| Tektronix Type C Factory Calibration Procedure]] (OCR)
* [[Media:Tek 53c cal procedure.pdf|Tektronix Type C Calibration Procedure]] (OCR)
}}
:''Actually, there never was a Type C, but that name is sometimes used as shorthand for the official "Type 53C" and "Type 53/54C" nomenclatures.''


The Type 53C is a dual-trace plug-in for [[500-series scopes]].
The '''Tektronix Type 53C''' is a dual-trace plug-in for [[500-series scopes]].
It was [[introduced in 1954|introduced]] along with the [[531]] and [[535]] mainframes in 1954.
It was [[introduced in 1954|introduced]] along with the [[531]] and [[535]] mainframes in 1954.  
In those scopes (Tek never documented its performance in the 540's),
It is very possibly the first dual-trace scope or plugin ever.
its bandwidth is 8.5MHz, and like most letter-series plug-ins,
its maximum vertical sensitivity is 50mV/div.  Unlike the Type [[A]]
and Type [[B]], the Type C had the ability to invert the signal
before display.


Type 53C was replaced by Type 53/54C in [[introduced in 1956|1956]] when
==Specifications==
the [[541]] and [[545]] were introduced.  The Type 53/54C's
In the 53x scopes (Tek never documented its performance in the 540's), its bandwidth is 8.5 MHz, and like most letter-series plug-ins, its maximum vertical sensitivity is 50 mV/div.   
bandwidth is 24MHz in those scopesIn [[introduced in 1959|1959]] it
Unlike the Type [[A]] and Type [[B]], the Type C had the ability to invert the signal before display.
was replaced by Type [[CA]].


At 15 tubes, the Type 53/54C and Type CA have the highest
Type 53C was replaced by Type 53/54C in [[introduced in 1956|1956]] when the [[541]] and [[545]] were introduced.   
tube count of any letter-series plug-in.  Each channel consists
The Type 53/54C's bandwidth is 24 MHz in those scopes.  In [[introduced in 1959|1959]] it was replaced by [[CA|Type CA]].
of a [[6AK5]] cathode-follower driving a [[12AU6]] differential pair
which drives a [[6AU6]] differential pair.  The two channels
converge on a [[12AT7]] cross-coupled cathode-follower.  Four
more tubes, a [[6AL5]] and three 12AT7's, comprise a logic circuit
which determines which channel drives the output at any
given moment.  The options are A, B, CHOPPED, and ALT.


* http://w140.com/tek_fcp/tek_type_c_factory_cal_proc.pdf
==Links==
* http://w140.com/tek-53_54c.pdf
{{Documents|Link=C}}
 
==Internals==
 
At 15 tubes, the Type 53/54C and Type CA have the highest tube count of any letter-series plug-in.  Each channel consists of a [[6AK5]] cathode-follower driving a [[12AU6]] differential pair
which drives a [[6AU6]] differential pair. 
The two channels converge on a [[12AT7]] cross-coupled cathode-follower. 
Four more tubes, a [[6AL5]] and three 12AT7's, comprise a logic circuit which determines which channel drives the output at any given moment. 
The options are A, B, CHOPPED, and ALT.
 
==Links==
* [http://www.radiomuseum.org/r/tektronix_dual_trace_plug_in_pre_a.html 53C @ radiomuseum.org]
* [http://www.vintagetek.org/wp-content/uploads/2011/10/Tek-series-500-development.pdf How the Tek 500 series came together]
 
==Pictures==


<gallery>
<gallery>
Image:Tek c schem.png
C_early_1.JPG|53C-Plugin´s Front
Image:C later 1.JPG|53/54C-Plugin´s front
C_early_2.JPG|53C-Plugin´s chassis
Image:IMG 0949.JPG|chassis
C_early_3.JPG|53C-Plugin´s chassis side
Image:C later 3.JPG| chassis below
C later 1.JPG|53/54C-Plugin´s front
IMG 0949.JPG|53/54C-Plugin´s chassis
C later 3.JPG|53/54C-Plugin´s chassis bottom
Tek c schem.png | Schematic diagram
Tek 53-54c 1.jpg|53/54C
Tek 53-54c 2.jpg|53/54C
Tek 53-54c 3.jpg|53/54C
Tek 53-54c 4.jpg|53/54C
Tek 53-54c 5.jpg|53/54C
Tek 53-54c 6.jpg|53/54C
Tek 53-54c right.png|53/54C
Tek 53-54c left.jpg|53/54C
Tek 53-54c sideways2.jpeg|Gray 53/54C with sideways labeling
</gallery>
</gallery>
==Components==
{{Parts|C}}
[[Category:500 series plugins]]

Latest revision as of 11:30, 29 January 2024

Tektronix Type (53)C
Dual-trace 8.5 (24) MHz amplifier
Tektronix Type 53/54C

Compatible with 500-series scopes

Produced from 1954 to 1959

Manuals
Manuals – Specifications – Links – Pictures
Actually, there never was a Type C, but that name is sometimes used as shorthand for the official "Type 53C" and "Type 53/54C" nomenclatures.

The Tektronix Type 53C is a dual-trace plug-in for 500-series scopes. It was introduced along with the 531 and 535 mainframes in 1954. It is very possibly the first dual-trace scope or plugin ever.

Specifications

In the 53x scopes (Tek never documented its performance in the 540's), its bandwidth is 8.5 MHz, and like most letter-series plug-ins, its maximum vertical sensitivity is 50 mV/div. Unlike the Type A and Type B, the Type C had the ability to invert the signal before display.

Type 53C was replaced by Type 53/54C in 1956 when the 541 and 545 were introduced. The Type 53/54C's bandwidth is 24 MHz in those scopes. In 1959 it was replaced by Type CA.

Links

Documents Referencing C

Document Class Title Authors Year Links
IBM 223-6725-2.pdf Application Note Tektronix oscilloscopes (IBM Customer Engineering Manual) 1960

Internals

At 15 tubes, the Type 53/54C and Type CA have the highest tube count of any letter-series plug-in. Each channel consists of a 6AK5 cathode-follower driving a 12AU6 differential pair which drives a 6AU6 differential pair. The two channels converge on a 12AT7 cross-coupled cathode-follower. Four more tubes, a 6AL5 and three 12AT7's, comprise a logic circuit which determines which channel drives the output at any given moment. The options are A, B, CHOPPED, and ALT.

Links

Pictures


Components

Some Parts Used in the C

Part Part Number(s) Class Description Used in
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
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
12AU7 154-041 154-0041-00 154-0287-00 Vacuum Tube (Dual Triode) dual medium-μ triode 104 104A 122 160 161 162 181 190 310 310A 316 317 3C66 502 502A 507 511A 512 516 517 517A 524 526 535 536 545 545A 545B 547 549 555 561 564 570 575 581 581A 585 585A C D E N Q Hickok 1825
6AK5 154-0014-00 154-0206-00 154-0084-00 Vacuum Tube (Pentode) RF pentode B C CA G K L ML S Z 517 517A 524
6AL5 154-016 154-0016-00 154-0038-00 Vacuum Tube (Dual Diode) high-perveance dual diode 163 181 190 1M1 310 310A 315 316 317 3B1 3B1S 3B2 3B3 3B5 502 502A 503 511 511A 512 516 517 517A 524 526 535 535A 545 545A 549 551 565 570 581 581A 585 585A C T Telequipment D56 Telequipment S52
6AU6 154-0022-00 157-0073-00 157-0059-00 154-0284-00 Vacuum Tube (Pentode) RF pentode 107 160 181 190 60 2A60 72 3A72 3C66 310 310A 316 317 360 502 502A 506 511 511A 512 513 516 517 517A 524 526 529 RM529 531 531A 535 536 545 545A 546 547 549 555 561 561A 561S 564 565 567 570 575 581 581A 585 585A 80 C CA Q