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title=Tektronix D|
title=Tektronix D|
summary=Differential amplifier|
summary=Differential amplifier|
image=D.jpeg |  
image=Tek type d front.jpg |  
caption=D front view|
caption=D front view|
introduced=1954 |
introduced=1954 |
discontinued=1968 |
discontinued=1969 |
series=[[500-series scopes]]|
series=[[500-series scopes]]|
manuals=
manuals=
* [http://w140.com/mmm/tek-d.pdf Tektronix Type D Manual (PDF)]
* [http://w140.com/mmm/tek-d.pdf Tektronix Type D Manual (PDF)]
* [http://w140.com/tek_fcp/tek_type_d_factory_cal_proc.pdf Cal procedure]
<!-- * [http://w140.com/tek_fcp/tek_type_d_factory_cal_proc.pdf Cal procedure] -->
* [http://bama.edebris.com/manuals/tek/d/ Type D manual @ BAMA]
* [http://bama.edebris.com/manuals/tek/d/ Type D manual @ BAMA]
* [[Media:070-228.pdf|Tektronix Type D Manual (PDF, OCR, bad-OCR)]]
* [[Media:tek_type_d_fcp.pdf|Tektronix Type D Factory Calibration Procedure (PDF, OCR)]]
}}
}}


The '''Tektronix Type D''' is a differential amplifier plug-in for [[500-series scopes]].
The '''Tektronix Type D''' is a differential amplifier plug-in for [[500-series scopes]].


It has high gain, and the bandwidth depends on the gain,
It has high gain, and the bandwidth depends on the gain, ranging from 2 MHz at 50 mV/div and up, to 300 kHz at 1 mV/div.
ranging from 2 MHz at 50 mV/div and up, to 300 kHz at 1 mV/div.


It displays the difference between two input signals,
It displays the difference between two input signals, with a common-mode rejection ratio of 10,000.  It has
with a common-mode rejection ratio of 10,000.  It has
six tubes, on a shock-mounted subchassis to avoid microphonics.
six tubes, on a shock-mounted subchassis to avoid
microphonics.


Type D was [[introduced in 1954|introduced]] with the [[531]] and [[535]] in  
Type D was [[introduced in 1954|introduced]] with the [[531]] and [[535]] in [[introduced in 1954|1954]] as Type 53D.
[[introduced in 1954|1954]] as Type 53D,
It was briefly renamed Type 53D/54D in 1955 with the introduction of the [[541]] and [[545]],
was briefly renamed Type 53D/54D in 1955 with the introduction
and then quickly renamed Type 53/54D.
of the [[541]] and [[545]], then quickly renamed Type 53/54D,
Its name was then shortened to Type D in 1959 with the introduction of the 5xxA scopes.
then shortened to Type D in 1959 with the introduction of
Its last year was 1968, having been superseded by the constant-bandwidth model [[1A6]].
the 5xxA scopes. Its last year was 1968.
 
[[K]], [[L]], and [[T]] are tied for longest production life, at 16 years.
[[B]], [[D]], and [[G]] are next at 15 years.


[[Lavoie Laboratories]] produced an unauthorized clone, the [[Lavoie LA-265-D]].
[[Lavoie Laboratories]] produced an unauthorized clone, the [[Lavoie LA-265-D]].


==Internals==
==Internals==
Some production used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
Some production runs used a pair of [[5814]] tubes at the input while others used [[12AU7]]'s.
These two tube types have different heater currents, and because the heaters are
These two tube types have different heater currents, and because the heaters are
series-wired, you cannot switch from one type to the other without circuit modification.
series-wired, you cannot switch from one type to the other without circuit modification.
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<gallery>
<gallery>
Image:D.jpeg
 
Image:D 1.JPG|Front
D.jpeg
Image:D 1.JPG.JPG| Chassis
D 1.JPG|Front
Image:D 3.JPG| Rubber support for elimination of microphonics
D 1.JPG.JPG| Chassis
Image:D 4.JPG| Chassis bottom
D 3.JPG| Rubber support for elimination of microphonics
File:Tek d early schem.png|Early Schematic
D 4.JPG| Chassis bottom
File:Tek d late schem.png|Late Schematic
Tek d early schem.png|Early Schematic
File:Tek d late attenuators.png|Late Attenuators
Tek d late schem.png|Late Schematic
Tek d late attenuators.png|Late Attenuators
Tek type d front.jpg|Front View (vertical position knob not original)
Tek type d left2.jpg
</gallery>
</gallery>


[[Category:500 series plugins]]
[[Category:500 series plugins]]
[[Category:Differential amplifiers]]
[[Category:Differential amplifiers]]

Revision as of 15:56, 14 October 2018

Template:Plugin Sidebar 2

The Tektronix Type D is a differential amplifier plug-in for 500-series scopes.

It has high gain, and the bandwidth depends on the gain, ranging from 2 MHz at 50 mV/div and up, to 300 kHz at 1 mV/div.

It displays the difference between two input signals, with a common-mode rejection ratio of 10,000. It has six tubes, on a shock-mounted subchassis to avoid microphonics.

Type D was introduced with the 531 and 535 in 1954 as Type 53D. It was briefly renamed Type 53D/54D in 1955 with the introduction of the 541 and 545, and then quickly renamed Type 53/54D. Its name was then shortened to Type D in 1959 with the introduction of the 5xxA scopes. Its last year was 1968, having been superseded by the constant-bandwidth model 1A6.

K, L, and T are tied for longest production life, at 16 years. B, D, and G are next at 15 years.

Lavoie Laboratories produced an unauthorized clone, the Lavoie LA-265-D.

Internals

Some production runs used a pair of 5814 tubes at the input while others used 12AU7's. These two tube types have different heater currents, and because the heaters are series-wired, you cannot switch from one type to the other without circuit modification.

Specifications

please add

Pictures